How to build a 2 speed turbo 400. If mpg is really important to you, go with combo #2.
Since its debut in 1964, it has propelled everything from Chevrolet muscle cars to Cadillac luxury sedans, and even Ferrari and Jaguar sports cars, with a robust build and reliability that The Chevy Turbo 400 transmission, also known as the TH400, is a three-speed automatic transmission that was widely used in Chevrolet vehicles from the 1960s to the 1980s. 90 when you shift into overdrive. Nov 13, 2017 · hi murray is my name im in australia just finishing up a 400 . d. i persoanlly preffer manual in every vehicle i own on the street. Historically, turbocharged K24 TSXs, Accords, and other wild swaps have shown that you can push the Honda 2. Easier too, and just as satisfying. You can find a donor TH-400 in one of these vehicles: Jan 29, 2006 · Trans Th 400 best choice I am a Ford guy and I have run them all C6/PG/TH400/ 4 speed Liberty behind my BBF motors and no question I would build the TH400 I ran more then one C6 in 3500lb car 9. 73 gear down to a 2. Dec 17, 2011 · find out what you actually have- a lot of the "high performance rebuilt 327's" out there are usually dressed up smogger 305's or 350's. Apr 1, 2015 · But, driven by power levels, gear ratios, and race distance to some extent, the Turbo 400 has found new legs as a two-speed, just like its GM cousin, the Powerglide. Jun 16, 2023 · Blog post and Helpfull information about the Turbo 400 Transmission. With the hypereutectic KB The Turbo 400 is compatible with most Jeeps. 75″ isn’t necessary unless you are planning on going over the 400 HP. if you want to do this on pump gas, a blouch dom 1. or larger big blocks. Jul 27, 2022 · One of our go-to’s for transmission upgrades, Hughes Performance, has released multiple game-changers including new Powerglides specifically for Circle Track racing, its Pro Tree Transbrake Valve Body, and its newest, a complete kit to convert a 3-speed TH400 to a 2-speed. 00 third gear. Feb 3, 2010 · While the GM Powerglide remains a popular transmission choice due to its proven durability, its 2-speed configuration sometimes leaves something to be desired due to the rpm drop between gears. 08:1, and third gear is an even 1 to 1. 6 psi from the intercooled turbo setup. But if you want "motor cred" then you've got the right building blocks already. GRW Stainless Turbo Oil Feed Hose. 2-Speed TH400 Shifter CUSTOM COLOR & HANDLE options available! Choose from glossy, matte, metallic, metal flake, machined, and more. This build is based on our standard Stage 2 build. The 2. The Turbo 400 transmission can be identified in the following ways: 1. I don't even want to pretend like I know how a 2 speed th-400 works other than I would guess the first gear is removed. Build a nitrous motor if you really want 400+ HP. 56 2sp 400. It is identified easiest by its “375-THM” designation cast in the underside of the tail housing. It's what the Y-blockisn't. The case, bellhousing, and tailhousing are cast from 356-T6 cast aluminum. Originally the TH400 was known as the Super Turbine 400. 08:1 and third gear is an even 1 to 1. The TH400 shift linkage diagram is an essential tool for understanding the operation of the Turbo 400 automatic transmission. Sep 15, 2013 · well you see, you need fuel to make power. When looking at a Jeep that came from the factory with the Turbo 400, it’ll be bolted to either the BW 13-39 or the Dana 20 transfer case. 5 Head Gasket A multi-layer steel head gasket is a necessity for turbo applications. 0 for 3rd gear. 48 for 1st, 1. The Turbo 375 was a version of the transmission used from 1972 through 1976, in small displacement cars. pis 175/30, modded h2e, or s366 and a healthy 17 degree hpop or a honey badger jr from nltd with some nltd tunes and call it a day. The Level 3 and 4 builds use a high-capacity clutch assembly with Raybestos racing blue frictions and hardened Kolene steel plates. Dec 26, 2016 · There is a drawback however to the 4L85, and that has to do with the fact that it’s an electronically-controlled transmission. 56 or 2. The advent of modern engines that make 400 hp or more has colored the reality of the past. 53 final drive, and that would put the engine at 8800rpm at 150mph in high gear with a 275 tire (28 inches tall), which is about what it should run in the 8th (idealy) in X275 trim. 60 in. As the leading shop for top-quality Turbo 400 transmissions for sale in Australia, we're committed to helping you make informed decisions. 56 rear gear to reach my target trap rpm, but I want to be able to leave at the most the tire will take. The base price is $999, and we opted to pay an additional $350 for forged Speed Pro flat-top pistons to be added to the stock crank and rods. Who makes the best bang for the buck in a 2 speed turbo 400? Apr 26, 2023 · Since the K24 can handle forced induction well, it’ll come as no surprise that many owners opt to go down the turbocharged route with their build. His plan to overthrow the Turbo 400, current Feb 7, 2011 · Which Kit are you using? With the Hi Stall you can probably enlarge the passages in the Seperator Plate even more than the kit suggested. So I think you're good, unless you really want to run it on a track or race it. Jan 10, 2024 · I am extremely excited tonight to announce a new transmission to join the Loganbuilt line up! 2 speed TH400! In this video I do an overview of what all comes I cover five budget-conscience tips that can help you get the most out of your Turbo 350 transmission without breaking the bank. 3 will make about 320 HP. 5 or the Aug 15, 2024 · Get the Best Performance with Hughes Performance Extreme-Duty 2-Speed TH400 Transmission Conversion Kit HP2202 parts at JEGS. Apr 17, 2013 · If I go 2 speed it will be a glide as that is an easier decision for me to make right now. if you can't find that, then find a casting number on the side or bellhousing area of the block. A 4-5 speed would be doable as well. Building a 400 plus horsepower 347 stroker and then running a blower or turbo at five pounds of boost is a lot safer than a 300 hp heads/cam FTI Transmissions & Converters TH400-52SPUBC Level 5 Turbo 400 Transmission w/2 Speed Conversion, Billet Transbrake Valvebody & SFI Certified Ultrabell Housing $5,129. Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors. 88x1. Contact BTE directly at 1-800-626-1828 to determine if the two speed TH400 is appropriate for your application. -ft. Remove the six check balls from the case, noting their locations. Front pump bearing kit . However, the entire rebuilding process of the Turbo 400 is covered in How to Rebuild and Modify GM Turbo 400 Transmissions by Cliff Ruggles. 56-geared Dana 60 with a spool and a Clutch Turbo were added. From street rods and offroad desert trucks to all-out drag racing, the TH400 transmission has proven itself to be very adaptable and capable of handling massive power — not only in General Motors applications, but also adapted behind Ford, Chrysler and May 1, 2011 · We build a 400ci Small Block Chevy for $2500. But if your goal is 375-400, you can get a much smaller turbo that will be more fun. News. 1. 2. 48, 2. 5-2. But I've always been way to poor to afford a $3000 stage 2 turbo kit. 584 in. A stock th350 costs about $1200, though it can be less if you are buying a used Th400 Jun 4, 2023 · Though I’d advise against the fp green. 48 first gear, 1. Note that inside the apply piston is the 1-2 accumulator and spring; remove them as well. I know ill need an ugraded fuel intake system but right now dont have a clue what I’ll need and somebody who works at Jun 9, 2023 · A single turbo LQ4 build is actually pretty easy on the wallet though, just make sure you have the fuel system and other bits to support it. For example, in my case I need a 4. 00 Ships Monday Sep 12, 2020 · Your limited ratio wise and changeability with the turbo 400. The green is a good bit bigger than what your goals would call for. Apr 7, 2014 · Hughes Performance takes us on a guided walk-though of the construction of their Turbo 400's. Ross-Lock™ pro tree or standard brake . Choosing between the mighty Powerglide and a Turbo 400 is largely a matter of horsepower, weight, and tire type. Jan 31, 2023 · Hey guys im somewhat new to turbo Upgrades and 2jz components and what hp they can handle so i came on here to ask what parts i needed upgraded to acheive 600-700 hp relilably. Many have been real fast as well. 5 clutch high gear drum . Find out how they go together, and what makes them so tough. 7" rod with the hypereutectic piston. Recognizing this dilemma, the engineers at TCI designed a TH400 transmission that is capable of handling the same elevated horsepower levels as the Mar 4, 2022 · Schneider Stage 2 Turbo Camshaft (260-70F-14) GRW Cylinder Head Cooling System Kit. (Note: we're going to avoid providing specific power gains for each of these mods, as different combinations will yield different results, especially on a motor as bottled-up as the 4. A fantastically designed and built transmission, the Turbo 400 is broadly popular for Jeep conversions. BTE's all new billet aluminum valve body kit contains everything needed to convert your TH400 transmission to a two speed unit. This kit comes with all the hard parts necessary for the experienced professional to convert their very own 3-speed TH400 to a 2-speed high horsepower drag racing transmission!! We rate kit HP2202 for up to 2,000 flywheel horsepower when used with good condition GM planetary gear sets, which will provide a 1. That's why they work so well with 2. This is similar to our Stage I build but uses a HD “K” case 4×4 TH400 core with a reverse pattern manual valve body that retains engine braking. Jan 17, 2013 · We added threaded bosses to allow easy installation of pressure, temperature, and input & output shaft speed sensor ports for racers who are into data logging. We’re able to do this by increasing the exhaust pipe diameter and either eliminating our catalytic converter or replacing it with a high-flow race cat. Which is why it was the recommended turbo in the 400whp blog. 5 paired with the tiny 235 drag radials running on radial-type prep, a custom 2. These are SFI-certified and often required by racing sanctions depending on the class and e. I would recomend a Steve Grinder trans The GM Turbo 400 transmission, also known as the TH400, is a three-speed automatic transmission that was manufactured by General Motors. Jan 10, 2019 · When building the engine, go ahead and install an AN fitting or two in the side of the oil pan to provide a good place for the oil to drain from the turbo back to the engine. i have much more control over how the car react. It was widely used in various GM vehicles from the 1960s through the 1980s. If your power inputs exceed that of a 1" input shaft, the t400 offers many variations in comparison for the time being. t. Some areas are cast iron, such as the center support for the Mar 12, 2009 · 1st gear under acceleration - Front planetary/reaction carrier is being held stationary from the low roller clutch locking against the center support, the rear planetary/carrier is rotating with the driveshaft, the direct drum is being antirotating via the sun tube @ a speed determined by which gear set is in the trans (2. SHOP May 31, 2021 · The TH400 and 4L80E both come with a 2. $5 off $49 / $25 off $249 / $55 off $499 / $110 off $999* - Use Promo Code: SUMMER Jun 26, 2024 · Even though it remained a three-speed long after the rest of the world had gone to four-speed overdrives, the Turbo 400 soldiered on as the virtually bulletproof trans in GM’s heavy-duty trucks Jun 6, 2009 · honestly automatics are great for higher horsepower levels not at the level that most of us would want. 48:1 but 3. 4L60e Removal. May 10, 2023 · It limits our quest to 400 whp and beyond. 08, 1. 3 to give you an idea. 5 EcoBoost, is a highly capable performance eng Dec 10, 2020 · The build is what will make it live, the difference is just the valve body and shifter (for the most part), price shouldn't vary much between the 2. 56 gearing was deemed optimal. Jan 20, 2013 · With a 2 speed turbo 400 you could do: 4. Lightweight TH400’s. Feb 10, 2023 · In this video, Zach covers the 5 Best performance upgrades for the 2. However, the CJ5 has to narrow of a wheelbase to accommodate it. It has been building and upgrading them consistently since the . It effectively reduces the gap between First and Second gear, and the subsequent drop in Alternate gear ratios and aftermarket housings (as pictured) are available for additional cost. There seem to be two prevailing schools of thought. gear set and output shaft . 48, with 1. Sep 16, 2022 · With strength and high-rpm performance being two of the K24’s primary strong suits, turbochargers naturally fit into the equation. I would be interested to see how a 2 speed works with a lock-up. 0: A stock th400 costs about $1600, though it can be less if you buy a used Th400 or rebuild. TH-400 automatic transmissions are a fantastic 3 speed automatic transmission and back up some serious GM torque from the small block 350 to the big block 396 and 454. E. You are actually paying almost double the part value for the convinience of having the kit put together Jun 7, 2010 · The GM factory officially refers to a 400 trans as a Turbo-Hydramatic (TH) and it first appeared in the GM lineup back in '64. 73/1. Summary. How to rebuild and modify GM Turbo 400 transmissions by Cliff Ruggles, and the ATSG TH400 book. Billet steel high gear hub . Turbo 400s use three tail shaft lengths; the most preferred units for a GM swap would have the short 4-inch tail shaft. Stock shortblock with nasty pitted wore out cylinders, stock roller cam, stock EFi lower intake i port and weld the injector holes up to make it carbed, stock valved head i ported but only a 45* seat- no valve job, the engine ate the holley check weight for the accelerator pump- whoops, ported E6 stock exhaust manifold, holley 350 carb i built The TH400 (or Turbo 400) transmission is one of the most versatile and widely used performance transmissions in the automotive industry. Shop Now at the Guaranteed Lowest Price! $5 off $49 / $25 off $249 / $55 off $499 / $110 off $999* - Use Promo Code: SUMMER First gear: 2. 52 First TH400 2 or 3 Speed ''Grudge Winner'' Kit. 70 = 2. 13 hours ago · Find ATI TH400 Transmissions and get Free Shipping on Orders Over $109 at Summit Racing! ATI Performance Products TH400 transmissions offer great performance for 400 c. Feb 20, 2020 · In the original article, we worked with ATI Performance Products to showcase the building of a nearly indestructible Turbo 400. Step 3: Remove Low Band Servo Cover. Also, the 4L85E’s case is 1 1⁄2 inches longer and has a slightly larger circumference than a Turbo 400. They are, for the most part, interchangeable on… Mar 27, 2011 · Final ratio - 3. the manual allows me to engage me powerband however i like it for a specific moment and also disengage it Apr 17, 2015 · The Turbo 400 can also be rebuilt at home, but there isn’t time or space to cover all the specifics here. Offroad Stage 2 TH400. 10/1. GRW Ported Turbo manifold w/ Tial 38mm MV-S External Wastegate. Aug 1, 2013 · The Chevy Turbo Hydramatic 400 (Turbo 400 or TH400) is the quintessential three-speed automatic transmission. Glass beaded, race prepped oem The correct size exhaust depends on a few factors but the diameter exhaust I most commonly use for turbo conversions is a 2. So a 4. 2 and 3 speed versions available with many gear set ratios to choose from. Lift off the servo cover, then remove the apply piston. 050 in. you're never gonna tow heavy at 400 horse anyway because its just Nov 9, 2020 · Curious about how to put together a performance build of the Ford 300 inline 6 variety? Here are the 3 steps to take towards building more power. Anything bigger than 2. This TH400 transmission is designed for high performance strip usage. A myriad of businesses offer every kind of performance part for the Turbo 400. 300 horsepower is a breeze for a Turbo K24, with power figures in the mid-400s being jogging pace. Jun 27, 2017 · 1We begin a 390 FE build with good bones—a solid, mainstream, vintage 390 FE block with 4. There are only a handful of RACE MAF intakes out there. I have had a stick shift in this car for the 12 years I have owned it. 40's and low 50's with a lenco 2 speed. 55 X . 5 xtr. 0 will make about 300-340 HP. Or do you have to acquire all the parts piece by piece? Some shift kits contain a modified 1-2 shift valve, which eliminates the automatic upshift function and provides the operator with full manual control of first and second gear. It isn't a high-tech, late-model overhead cam engine or a direct-injected LS you can spin to 6,500 rpm without breaking a Apr 15, 2021 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright May 14, 2020 · You need every part of the 3 speed to make the trans have a transbrake and reverse. 050-inch bores enlarged to 4. 0: Gear ratios: 2. 34 gear set; 1. Is there any fully comprehensive rebuild kits that are recommended. A stock th400 can handle between 400- 450 horsepower: A stock th350 can handle between 315- 400 horsepower : Gear ratios: 2. Run on pump E85 from a local station, the turbo 3800 produced an easy 418 hp and 387 lb. 95/1. a vehicle may be running. M. Modifications and options include: * Fully blueprinted and equipped with high-flow lube circuits, increased torque capacity, and hard chrome oil rings * Sprags replaced with heavy-duty units * Clutch The Turbo 400 Transmission, or TH400 Transmission debuted in General Motors cars in 1964. Unstoppable Auto Tranny. 5” intake and pairing it with a turbo-back exhaust will create the airflow efficiency that we need to reach 400 WHP. 5 is rated for up to 900Hp and is a great option for people who will mostly race. It was shipped with a Mar 24, 2023 · Step one in building a top-shelf Turbo 400 transmission involved using a Reid Racing Super Hydra 400 case. I think I would rather do a 2 speed 400. com/build/67gtoSupport My Cha May 3, 2005 · Basically, I've been dying to turbo my car since the day i got it. 578/0. Jul 1, 2011 · Without a ‘gate, a turbo system would have no way to regulate turbine wheel speed, which would cause the turbocharger to produce an excessive amount of boost and, most likely, destroy engine Jan 20, 2019 · Ever wondered how to build a high performance Turbo 350/ Turbo 400 transmission?Watch more of this series: https://debossgarage. The updated design was developed to eliminate all of the crack-prone locations found in the original GM transmission case. We can upgrade this unit to our other level of builds as necessary for you big power off road guys. The only part you can eliminate could include the low roller clutch, it's corresponding inner race and the intermediate clutch pack if it were a dedicated 2 speed application. No, not the Pontiac engine, but the Muncie four-speed and 12-bolt were constantly on the fritz. In a time when 4x4 manufacturers are building transmissions from four-, five-, and six Oct 25, 2023 · The ultimate turbo kit, which features a stainless steel Tial turbine housing on a Garrett turbo, Tial 44mm wastegate, a cast turbo adapter, and every single part that you need to install the turbo kit, is made by cp-e. The Sonnax 2. 82 O. Reviews. Construction and Size. 52, 1. Came with three tail shaft lengths. 40 gear set; 1. This transmission was designed to substitute the ST300 2-speed automatic transmission. srp forged flat tops (5cc valve reliefs)scat h beam forged rods arp2000 bolts jeff kauffman balanced and supplied rotating assembly edlbrock rpm performer heads and intake port matched and 310cfm runners howard hydraulic roller cam 550/575 lift 110 lsa johnson hydraulic roller lifters Step 2: Remove Check Balls. 48 second, and 1. 520-inch lift on both intake and exhaust, with 227/234 degrees of duration at 0. 52:1 Jul 14, 2016 · Not really concerned with ratios as much as I am about what the prerequisite parts that are needed to put a turbo 400 together. 02/1. 58 gear ratio in a glide goes, last I checked they were 2 grand for that set. 6 Head Studs Turbo 400 by BTE available for all racing applications. The TH400 transmission – or Turbo 400 transmission – was General Motors vehicles’ brainchild in 1964. Aug 8, 2019 · But for this article, we’ll be focusing on building a bullet-proof 400. In our experience, you must have a decent set of cylinder heads in order to make 400 hp on a basic, low-compression 350 c. So when we go for an aftermarket intake we suggest choosing a unit with a RACE MAF option. Remove the six bolts that attach the low band servo cover to the case. If mpg is really important to you, go with combo #2. Mar 26, 2014 · I decided to go Bruno-Lenco 2 or 3 speed and you can easily decide pretty much on the fly what gear to launch in or shift order to counteract changing track conditions. 49 Now think about this: Combo #4 has a multiplier in first gear equivalent to a TH400 with 4. Jul 14, 2020 · CST5 Turbo Upgrade – 2006-2013 DISI MZR. what is needed to be done to convert it to a 2 speed? and how much would it cost? Mar 28, 2007 · Power SqueezeWhile 400 hp from a bolt-together 318 may seem like plenty, we figured with a little go-fast gas our little engine could go hunting for some big-block game. I was planning a 5. Only at www. Aug 19, 2024 · Building a Chrysler Slant 6 on a budget can be a challenge, but it's still cheaper than a V8 swap. There's a TH400 build Thread at the top of the Trans/Rear section by Jakeshoe that has some Tips about the Feed holes sizes and blocking the 2-3 Accumulator. The Turbo 400 transmission is a strong and durable transmission with a reputation for handling high horsepower and torque. Jan 2, 2018 · Upgrading your Mazdaspeed to a 3” or 3. Are you looking for some inspiration for your drift build? Feb 10, 2024 · This transmission is a 3 speed, and no overdrive gear was available. There is also the sbb 350 that is a bit better to start with than the sbb 300 because of more after market support. carcraft. *Both these prices dont include if I need to cut the driveshaft. Rear case thrust bearing Oct 19, 2020 · “The collector is the first part we build, but this isn’t an off-the-shelf item. 0 LS, but a great budget build will easily get you 500-600 HP. get the numbers off the pad behind the water pump on the passenger side front of the engine- you are looking for a 2 or 3 letter code. Option A-- run the trans as a 2 speed and optimize the launch vs the target trap rpm. As automatics go, it is considered the heavy-duty version of the Turbo Hydra-Matic 350; they are similar in many characteristics. Rockers: Comp Cams Pro Magnum roller, 1. The next step was to remove the damaged 4L60e and replace it with our TCI three-speed unit. The Turbo 475 was an extra-heavy-duty version and was found in larger trucks from Mar 30, 2016 · HERE IS MY GOAL: Build a very very reliable 400 WHP (Dyno jet) K series engine that will get great gas mileage and will last just like a factory Turbo car and will not need any major work for at least the next 8-10 years like a factory unmodified EVO or STI. Designed to provide you with basic information about Turbo 400 (TH400) transmissions. 7 EcoBoost, like the 3. We need to know what flange the turbo is going to use and what wastegate size the customer wants,” Andy explains. The larger size of a RACE MAF means a larger volume of air can be fed to the turbo, intercooler, and ultimately engine. The Chevy 400 can be made compatible with AMC I6 & V8 engines. Raising the boost up to 12. Nov 4, 2019 · Build a 400+HP Vortec 350. 7 EcoBoost. Disassemble the Turbo 400 Gearset. In addition, you can actually pick your turbine housing A/R which adjusts where you want the power to be made. I would do some experimenting with the rear gear and my ratios. 2 speed gives you a powerglide shifter if you are not used to a reverse pattern valve body and can't learn new tricks. Lumpy cam will get you the rest. The stator in the converter multiplies the torque to double the ratio, so long as you keep a stock 13" converter or the L88. The TH400 transmission was used in Pontiacs and Cadillacs in the first year but somehow found its way to Chevrolets, Oldsmobiles, and other models by 1965. If you want to build your /6 for any kind of performance you can get good advice here. Your choice of shift lever . 040 thickness, but thickness should be determined by your cylinder head and engine block deck measurements. Sep 23, 2018 · A very interesting automatic transmission to consider, when replacing that tired old transmission or even upgrading an older unit like the Powerglide, is the Turbo Hydra-Matic 400. ” The only modification that most people will need to make to their vehicle to install a Gear Vendors overdrive unit is to the driveshaft. 48/1st is 84% of input For 3 1/2 stroke or less . This transmission requires a Powerglide Shifter to properly operate. Billet tuff torque input shaft, turbo or glide spline . Sep 4, 2007 · Carburetor: Speed Demon 850, with a 1 in. 4L extremely far with stellar reliability. 34=6. org slantsix. Features: Billet Aluminum Transbrake valve body (reverse pattern) (1+2 reverse pattern brake available as option) New performance clutches and bands Shop the Best available Hughes Performance Do-It-Yourself Extreme Duty 2-Speed TH400 Transmission Conversion Kit parts at the Guaranteed Lowest Prices! High Performance Parts Delivered Fast. This diagram provides a visual representation of the various components and their functions, helping both enthusiasts and professional mechanics troubleshoot common issues and make necessary repairs. 250" input, converter dump and Mcamis pneumatic shifter and MSD-75591 6-speed shift controller so trans can be manual / auto shift or combination of the two. The Turbo 350 transmission was a single piece transmission with the bell housing integrated into the transmission body. It's possible to push 1000 HP from a 5. Jerrod Jones Writer Dec 01, 2006. Price is $3,245. 86/1. The Turbo 400 is primarily constructed of cast aluminum, with the bell housing being integrated into the transmission and also made of cast aluminum. For pricing and availability or to order, please email or call M&M at (573) 636-4136. Reverse gear is 2. By using the two speed design, the transmission can utilize the transbrake in second gear, allowing the car to launch a much higher starting line ratio than a powerglide. 56 still in the stock case. Feb 17, 2022 · Run with the DIY turbo kit (using the stock FWD exhaust manifolds), we first applied 7. i. That will lower the RPM by at least 800 rpm. 350 HP SBC 350 Build Recipe 350 HP 350 SBC build list components using a late-model 1-piece rear main seal two bolt main block. 48:1 First gear ratio. (The lighter-duty Turbo 350 has a more-desirable 2. We run Cometic headgaskets on every car. The 400 moniker's origins are unknown. Jun 24, 2016 · 02. If it is an orignal small block 2 speed powerglide car, does the drivesaft need to be re-sized? Mar 15, 2011 · i currently have a very nice th400 that is built to hold over 2000hp. A few cars have been in the . We've run mid-low 4's on the stock gearset in a stock case with a 2sp configuration for a couple seasons, now looking for consistent low 4's with the Coan 1. Dec 1, 2006 · TH400 Transmission Build - Turbo 400 Revival. 210 stroke ohio forged crank. The big news we learned involved the SuperCase for the Turbo 400. As we know, the CST4 is happy up to around 400+ Whp. ATI's Turbo 400 Drag Racing Transmission. Now available with the award winning ATI T400 SFI Certified SuperCase. The TH400 transmission comes with a case made of cast aluminum alloy to give it strength and durability. BTE Two Speed TH400 Transbrake Valve Body. May 7, 2021 · 2. For A-Bodies Only Nov 11, 2011 · Thanks, looked at their web set haven't called yet it is street/strip car currently have a 350 trans but didn't want to waste time on or money rebuilding it it is a bbc with about 700 hp so figured might as well put a 400 with a brake but want to get the best trans for the $ Mar 14, 2024 · Generally, it is considered a better route to upgrade heads, intake, cam, displacement via a stroker kit and then run lower boost pressures to insure reliability and drivability for a 500 hp 302 build. External Build. To reach that goal, we’ll need to use the parts listed above. GRW Baffled -10an Dual Catch Can Kit (Prototype) Apexi N1 3” Turboback Exhaust. 75 inch pipe with a D-cat pipe to match. TH400-52SPUBC: Level 5 Turbo 400 Transmission, 2 Speed Conversion, Billet Transbrake Valvebody, CUT for bolt on bellhousing NOTE: This is a 2 speed only TH400 Transmission. You still will have better off the line performance than a TH400 with 3. 6 psi resulted in 534 hp and 488 lb. It can withstand a tremendous amount of torque without breaking a sweat, which made it a logical choice for the all-new C3 Mar 6, 2023 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Nov 16, 2021 · LS1 Flexplate SFI 29. 55 gears. 30-4. This means that when you select the last N you have to follow the rules of engagement in order for it to be "clean" and stay "clean"which includes keeping the engine RUNNING! Sep 4, 2018 · It isn't what the Y-block is that excites us. Apr 24, 2016 · That's 350 HP in visuals. . Battle Royale: The Turbo 400 And The Powerglide. Feb 1, 2010 · When it comes to full-size 4x4 trucks and SUVs, the General Motors Turbo-Hydramatic 400 (TH400) automatic transmission is perhaps one of the most coveted automa. 52 for 2nd gear, and 1. slantsix. Of course, the 4L80E has overdrive which can be a huge advantage over a three-speed transmission if it’s needed. Turbo 400 Transmission Identification. 4. The TH400 originated in 1964 to replace the ST300 2-speed automatic transmission. 7" rod build that utilized the stock 400 crank. Mine has 1. Jul 19, 2017 · There is also the BBB 455 swap to consider as well but to build a performance BBB 455 you may need to up your budget depending on how far you want to take the 455 build. 3 LS, but a great budget build will easily get you 400-500 HP. 58 glide for what we have in our 1. 185 bore 4. Dec 15, 2022 · This unit will knock a 3. The Terminator 2. As far as a 1. 5 has the same reliability as our Terminator 2 but includes our Aluminum Direct drum for improved performance and safety. of torque. I'm talking perceived HP mind you. if you don't upgrade the injectors for more volume or get a tune to call for more pulse width to inject more fuel you're never gonna make any more power. It’s not a bad turbo. If you intend to go beyond 400 hp, then a turbo kit will likely provide the best option for the money. It’s possible to push 1,000 HP from a 6. 48:1, Reverse gear: 2. GRW Megasquirt 2 Plug and Play EMS w/ LS2 Multi Jan 10, 2024 · In the arena of General Motors transmissions, the TH400, affectionately known as the ‘Turbo 400’, is often hailed as the titan of three-speed automatics. Apr 27, 2023 · A single turbo LM7 build is actually pretty easy on the wallet though, just make sure you have the fuel system and other bits to support it. Usually a . But now we are ready to take a step up to the CST5 Turbo for the Mazdaspeed which is happy up to… You guessed it! 500+ WHP. I also realized that the price you pay for the kit is a lot more then what the actual parts are worth. OR, about $2000-$2100 for a muncie M21 with all parts. 58 in most cases the glide will be for you. 96 to one. The collector, as the name suggests, is the bit at the end of the manifold where every branch merges together before entering the turbocharger. 48 as the second cog, but with the power of our supercharged small-block in Evil 8. I went with a forged piston in my build but that decision was cemented ultimately by my junk crank. Everything you need to build a start of the art, lightweight, bulletproof, Turbo 400. Feb 21, 2015 · to start with, my crank was junk. HKS GTiii-4r T4 Turbocharger. 080 inches with coated Speed Pro forged pistons and Eagle H-beam connecting Oct 10, 2021 · There are two significant variations of the Turbo 400. 48:1 first gear. May 15, 2018 · 6. Intake: Edelbrock Victor Jr. com, the official website for Car Craft Magazine. 73 rear end ratios. Feb 2, 2018 · In a Turbo 400, the stock first gear checks in at 2. 4 Water Pump OEM. Camshaft: Comp Cams mechanical roller, with 0. 52:1 rockers) and 242°/248° of duration @ 0. of lift. open spacer Heads: Air Flow Research 195, with 2. 48 for 2nd, and 1. Mar 22, 2022 · Starting from scratch and dollar for dollar, I couldn't begin to build a 1. org is the best source for information on the Slant Six. This presents additional complexity and expense during installation when compared to the Turbo 400. I already purchased some gte pistons and rods and im considering oil squirters but am not sure. This kit contains the essential components needed to upgrade your TH400 to our "Grudge Winner" spec two or three speed transmission. The following year, the TH-400 could be found in Oldsmobiles and then Chevrolet’s. The gear ratios used for this transmission were 2. 2 – 399853; RTF Fluid – 950600; Project TwoFace will be a truck that can drive to and from the race track. pop a valve cover off and Feb 5, 2019 · [ August 2, 2024 ] The Impact of Zinc Levels in Engine Oil: A Detailed Analysis Technical Info [ July 31, 2024 ] How To Wire The Ignition and Starter On Any Classic Engine How To & DIY [ July 30, 2024 ] Hot Rods — The First Race Cars Hot Rod Lifestyle [ July 30, 2024 ] Break-In Oil Myth Busting: Why a Fresh Engine Build NEEDS Zinc Technical Info Feb 24, 2007 · So im looking at about $1200-$1300 for a turbo 400 trans. The SFI-approved case is understandably strong and made of aluminum, so it’s relatively light. 52 for 1st gear, 1. of lift (with 1. since the four- and five-speed overdrive transmissions of today can have frustrating Sep 23, 2018 · TH-400 transmissions are three-speed automatics, with a 2. Our idea is to build an extremely reliable and consistent truck that we could take to the races on Saturday and the grocery store on Sunday. These transmissions mate a three-element turbine torque converter to a Simpson planetary geartrain , providing three forward speeds plus reverse. It has been fully dyno tested to ensure proper operation. Feb 3, 2016 · Unless you are looking for less first gear ratio than 1. 00. Oct 24, 2011 · Here's what's done to my 2. Mar 4, 2024 · We start with a nice basic Chevy 350 build parts list and move through such options as 400 hp 350 Chevy recipe, 500 hp 350 Chevy recipe, and even a 350 SBC turbo build. if yours is good I'd pay the money to have it checked/ground to perfection and stick with the 5. May 4, 2011 · There are many types of valve bodies that have a neutral at the end of the shift pattern but there is only 1 "clean neutral". Slant Six Resources . 9L six. The first year it was used in Cadillacs and Pontiacs, but found it’s way into Chevrolet’s and the like by 1965. almost all my car have been either heavily modded or turbocharged. small-block Chevy. Nov 26, 2020 · Remember the first gear ratio in a Turbo 400 is in NOT 2. All transmissions will have a $400 freight fee. Keep in mind that, if such a valve is installed, the transmission now shifts into low gear at any vehicle speed, when the manual low gear position is selected. This transmission was known for its durability and strength, making it a popular choice for high-performance and heavy-duty applications. 10cm hotside if you want it on e85, you could go with the 1. To summarize, a stock 6. 050-inch lift, with a 112 Feb 15, 2024 · This 3 speed transmission has its gear ratios defined as 2. In 1965, Cadillac, Oldsmobile, and Chevrolet vehicles adopted the TH400 over the ST300 due to the improvements that were made. May 13, 2018 · The light-duty Turbo-Hydramatic 350 three-speed automatic arrived in 1969. This conversion can help make for an improved Jeep powertrain over 727, 999, AW4 and other, lesser transmissions. Vasco intermediate shaft; Vasco input shaft with drum; BTE's billet aluminum two speed transbrake valve body or industry leading 1+2 reverse pattern three speed Hunter has had his Focus ST for almost 4 years, and it has come a long way! So we thought we'd throw together a little time lapse of the build process to sho Nov 14, 2023 · Changes Through the Years: Pan - Case Belly The below table is an excerpt from the 'Fast Facts' doc showing all changes that were made to the TH400s starting with the pan and filter designs and concluding with the case belly (see the Fast Facts doc for a full list of all changes - I'll update/correct/revise as I become aware of any new or incorrect information). To summarize, a stock 5. 48) Combo #4 is like a TH400 with a 2. The specialty jeep TH400 case is 24 1/2 inches long. The TH400 Street Strip Transmission 4” T/S, the TH400 Full Manual Transmission 4” T/S, and the TH400 Transbrake Transmission 4” T/S. See our Kit #437AMC for details. Jun 5, 2020 · It’s not easy to make 400 hp with a basic 350 Chevy using stock heads. May 8, 2018 · Right off the assembly line, the Turbo 400 is a rugged performer. Buyer's Guide Mar 1, 2009 · Planetary Gearsets:Although the Turbo 400 is heavy-duty in stock form, its Achilles heel for towing is a "high" 2. 5:1 compression ratio we needed to pack in copious boost; we needed around 30 cc of dish, making the big-stroke/big-rod combo a no-go. Ross-Lock TM trans brake reverse shift pattern *248 gear set . valves. Modified front pump converter charge . Edelbrock's #2221 hydraulic roller cam is part of the #2043 Top End Kit and features 0. 48:1 low gear ratio when kit HP2205 Feb 27, 2007 · But it kept breaking. Apr 1, 2009 · Follow along as we show you how to build a Chevy TH2004R transmission to handle high horsepower levels with durable performance parts that will be up a Turbo 200 to handle 400-800 horsepower Aug 9, 2023 · Bertrand has plenty of raw material to work with: The AOD appeared in millions of LTDs, Mustangs, Fairmonts, and light-duty trucks from 1980 to 1993. Since the release of my new line of Loganbuilt 2 speed TH400 small tire/no prep racing transmissions, I have gotten a few questions regarding the comparison Jan 20, 2023 · To achieve our goal of building a small-block Chevy capable of eclipsing 400 lb-ft of torque for something near $1,000 we searched long and hard for the best deals on performance parts. 49 rear gear. 38 rear gears (10. Jul 31, 2011 · To get the 8. 31 gear set; 4T80/Northstar sprag drum assembly; 4340 billet steel intermediate pressure plate; Billet steel forward hub "Super Shaft" input shaft and drum assembly — available in cast, billet steel and billet aluminum billet turbo 400 drum assembly available in sprag and spragless, turbo 400 Nov 19, 2016 · Trying to figure out what I'd like for Christmas, I have two books in the wifes Amazon cart right now. 1-2 leave gives you nice options if you run on very different surfaces. Jan 24, 2013 · OK, so now lets talk Turbo 400. 60 and I spent more time at different trans shops then racing I know some guys here run them but look at all the parts you can buy for the TH400 to make it live . 86 / 2. In the turbo hydromatics category, we have several TH400 versions to choose from. How did we do it, read the full article for details and some great tips. 2 Speed mode, and 3 speed mode. The stock cast 400 OE forward clutch hub (right) 300M is only rated to handle 500 hp. Hughes has plenty of experience with the Turbo 400. 84 Ratio Input Carrier (six-pinion planet) is the impetus for changing the gear ratios. jqv vcmhk ancpvil yyhdc itwsqdq njaech ltoi wdnap aiwhspfb movwf