Availability
FTI Performance TH400 Level 4 transmissions feature a full manual valve body equipped with a transbrake for the ultimate drag racer. They make an excellent choice for weekend bracket racers, high-powered street cars, and mud trucks. The transmissions have: a 34-element intermediate sprag, performance clutches and steels, high-flow pump, race-prepped stock case, deep aluminum pan, billet forward clutch hub, heavy-duty intermediate retainer, and a 4-clutch intermediate pack. Some models are compatible with Ultra Bell bellhousings.
( 13 )
$2,499.00
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$3,975.00
FTI Performance TH400 Level 4.5 transmissions begin with a race-prepped factory Chevy case—and end up rated up to 1,100 hp. Each professionally hand-built case includes a short shaft, a billet aluminum drum and forward clutch hub, a 34-element sprague, and race material clutches. An FTI billet aluminum trans-brake with a full manual reverse valve body is stout enough to handle major power and keeps reverse and first gears closely knit. The included deep aluminum pan allows more fluid capacity for increased cooling, while the 300M input shaft provides amazing strength. Whether you're racing off-road, on the street, or at the track, FTI Performance TH400 Level 4.5 transmissions fit the bill. Order the model best suited for your application.
Not Yet Reviewed
$3,649.00
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$3,899.00
FTI Performance TH400 Level 3 transmissions are designed for the racer who needs performance at the track without a transbrake. They're equipped with a full manual valve body (forward or reverse pattern), performance clutches and steels, high-flow pump, race-prepped stock case, deep aluminum pan, and rollerized output shaft. These transmissions make an excellent choice for foot brake racers, high-powered street cars, and mud bog trucks.
( 1 )
$2,449.00
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$2,799.00
When the name of the game is horsepower, you need an FTI Performance TH400 Level 5 transmission to manage it. Rated up to 2,000 hp, these race-prepped, factory-cased, short-shaft units pack one heck of a punch. Each hand-built case includes a billet aluminum forward clutch hub and pro-mod direct drum, a 36-element sprag, and race material clutches. An FTI billet aluminum full manual reverse valve body provides firm shifts, while tough ER310 material input and intermediate shafts hold them all together. The standard deep aluminum pan holds more fluid for improved cooling. Be ready each race day, equipped with an incredibly strong FTI Performance TH400 Level 5 transmission.
Not Yet Reviewed
$5,349.00
ATI Performance Products TH400 transmissions offer great performance for 400 c.i.d. or larger big blocks. 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 packs are assembled for individual applications * Compu-Flow valve body standard * Special low-gear sets for increased launch capability * Lightweight options available to upgrade the transmission
( 1 )
$2,619.99
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$6,398.99
Reid Racing TH400 tailhousings are stronger and more rigid than stock GM tailhousings. Why? Reid utilizes aircraft-grade aluminum alloy, thicker walls, and additional gusseting. Plus, their precision machining and perfectly aligned bores minimize power loss while maximizing reliability. They have also reworked the oil passages for improved lubrication of the yoke and rear bearing.
( 4 )
$339.00
B&M kickdown switch kits are perfect for use when swapping out a TH350 or TH700R4 for a TH400. These kits mount to the factory throttle cable bracket for easy kickdown control.
( 43 )
$97.69
Transmission Specialties billet aluminum TH400 valve bodies use zero OEM stock parts—everything is brand new! Unlike many production builders, TSI's valve bodies are handcrafted from beginning to end by one highly skilled and experienced technician. This process ensures that you get the highest quality product each and every time. The valve body has undergone over 40 years of contiguous, rigorous R&D and on track testing. For over 40 years, Transmission Specialties has been the trusted name in the performance automatic transmission industry. They have pioneered much of the technology that is now commonplace in the transmission marketplace. The inventors of the spragless converter and the aftermarket straight cut Powerglide planetary, TSI is known worldwide for manufacturing the highest quality transmissions and components. Product features: * Billet 6061-T6 main and small valve body construction, no steel * Laser-cut aluminum separator plate * TransGo custom heat treated, USA Made valves * TransGo custom springs * Proprietary hydraulics and worm tracks * Proprietary TransGo Pressure Regulator valve train assembly * Bores are concentric to .0003 in. insuring perfect valve operating * All parts of the valve body are within .001 in. flat and parallel * Micro RA finish ensures zero leaks and maximized fluid movement * Custom bolt pattern eliminates leaks that are common in PG valve bodies * Weighs less than 8 lbs. fully assembled * Ultra-Fast brake release is achieved with our custom hydraulic and plate design * Includes NEW transbrake Solenoid * Includes 17 precision matched reverse release springs * Best fitting and performing valve to bore design in the industry resulting in near perfect vacuum test results * Grade 8 fasteners
Not Yet Reviewed
$563.28
FTI Performance TH400 U-Build It kits are complete packages for upgrading your GM transmission. They come with the same parts used in FTI's winning combinations—including: a bushing set, direct red race clutches, direct steels, reverse race clutches, reverse steels, Kevlar® race band, filter, and a complete overhaul set with PTFE sealing rings. Available with your choice of the number of clutches, FTI Performance TH400 U-Build It kits contain everything needed to rebuild your TH400 to the highest level.
( 6 )
$279.00
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$299.00
FTI Performance Transmission pumps are high-quality transmission pumps that will easily exceed the quality and performance of your factory pump. For all of your transmission pump needs, FTI Performance has you covered.
( 2 )
$525.00
FTI Performance TH400 direct drum HP spring kits are heavy-duty, high performance springs—a must for high-rpm applications. Servicing or rebuilding your TH400 automatic transmission can be a big job. Make it easier by choosing quality parts you can count on to fit and perform—FTI Performance direct drum spring kits.
Not Yet Reviewed
$29.99
ATI TH400 upgraded center supports feature a bronze bushing that virtually eliminates premature sprag failure. They are highly recommended for competition applications. These supports are also available with a PTFE coating for aluminum drums.
( 2 )
$169.00
These TCI PRO-X TH400 aluminum tailhousings feature light weight and improved strength, while using a tailshaft roller bearing rather than the factory bushing for superior lubrication and durability. The OEM bushing is a common failure point with TH400 transmissions, as it can run dry in high-speed TH400 applications. The TCI PRO-X TH400 aluminum tailhousings are more rigid than other factory or aftermarket tailhousings, with increased structure for added support and durability. The use of the roller bearing provides added lubrication, and the usually unreliable paper gasket used to seal the housing to the transmission is replaced with a precision-machined surface that incorporates an O-ring for a solid, drip-free connection. Build a stronger transmission and have better reliability with one of the TCI PRO-X TH400 aluminum tailhousings.
( 4 )
$288.95
J.W. Performance offers a variety of transmission wiring accessories, including TH400 kickdown wire connectors. These replacement one-prong solenoid switch connectors are manufactured to factory specs to ensure proper fitment and long-lasting performance.
( 1 )
$26.84
FTI Performance offers a variety of automatic transmission bearings—including these TH400 rear case bearings. Order the high-quality replacement designed for your application.
Not Yet Reviewed
$19.99
Summit Racing™ TH400 transmission cases are a street/strip version of the TH400 aftermarket SFI transmission case. The bellhousing is not included and must be purchased separately. A direct replacement for the GM case, Summit Racing™ cases use a permanent mold casting to increase the case wall thickness, making it sufficient to pass SFI 4.1 certifications without the need for any external shields or internal liners. The 2-piece design allows them to be used with all popular engines by simply changing bolt-on bellhousings. Features include: * Speedometer and governor provisions * Longer band anchor pins captured by oversize bosses * Multiple external pressure taps allow for monitoring of circuit pressures * Accepts all style oil pumps, including 8-bolt and vari-pitch designs * Heli-coiled bellhousing and oil pump threads * Pre-machined to fit larger custom planetary gear carriers
( 2 )
$1,899.99
ATI aluminum TH400 SuperCases feature SFI certification and a bellhousing. Developed to eliminate all weak points found in the original TH400 case, the rugged SuperCases and bellhousings are SFI-approved for competition. In addition, the SuperCases have a removable bellhousing that bolts directly to the case instead of using the pump bolt locations. They have been engineered to accept all internal TH400 components.
Not Yet Reviewed
$2,010.99
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$2,355.99
FTI Performance TH400 center supports include bronze support rings—a must for street and strip applications. Servicing or rebuilding your TH400 automatic transmission can be a big job. Make it easier by choosing quality replacement parts you can count on to fit and perform—FTI Performance center supports.
( 1 )
$229.00
These springs from TCI are a complete set of 16 direct piston release springs to quicken the release during trans-brake use. You can count on TCI to keep your valve body and trans-brake working flawlessly.
( 2 )
$47.95
TCI Automotive offers a wide range of automatic transmission rebuild components—including these PRO-X center support rings for GM TH400 transmissions. They're machined from durable material and original specs to provide the fit and performance you expect.
Not Yet Reviewed
$87.95
Summit Bucks
Transmission Specialties TH400 front pump assemblies are designed to replace your worn transmission pump. These components are manufactured to TSI's rigorous specifications that will easily exceed both the quality and performance of your factory pump. For transmissions and components for drag racing and high performance street vehicles, TSI has got you covered.
Not Yet Reviewed
$544.07
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$659.29
Originally released in 1964, the TH400 has proven again and again to be an ideal racing automatic. From hot rods to Pro-Mods, the TH400 can be built in many combinations. J.W. Performance offers several standard units to choose from. J.W. Performance Street Lethal TH400 transmissions are ideally suited for your pro-street or pro-tour application. They are assembled with quality performance clutches and steels to ensure longevity and multiple valve body choices are available to give you the options you need. Choose the one preferred for your project.
Not Yet Reviewed
$3,454.74
Transmission Specialties TH400 SFI bellhousings are intended for racing applications. Bellhousing is lightweight and specifically engineered with an open bottom to allow for converter access, reduced diameter to give you better floorboard clearance, and a contoured flange to match the rear of your engine block. Bellhousing is cast from quality 6061-T6 aluminum and heat-treated to GM TH400 transmissions and Powerglide aftermarket cases. For over 40 years, Transmission Specialties has pioneered much of the technology that is now commonplace in the transmission marketplace. They are the trusted name in the performance automatic transmission industry.
Not Yet Reviewed
$375.09
Transmission Specialties TH400 SFI two-piece aluminum transmission cases are SFI certified for Turbo 400 transmissions. Developed to eliminate all weak points found in the original GM transmission case, the case is cast from 356-T6 aluminum and precision machined to rigorous specifications. A combination of strength and quality castings and machining make this SFI-approved transmission case stronger and more ductile than OEM castings.
Not Yet Reviewed
$1,801.86
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