Tired of breaking 4L60E's?
Specializing in Racing Automatics, GM LSx crate engines, parts, and retrofits, Performance Engine Building and Installation, and complete musclecar service.
We have in limited quantites NEW GM Smooth Race Drums.
The bare drum is $120 shipped. Drum assembled with new 34 element sprag, HD race, and spirolock ring is $300. Hot loaded with new apply piston, return spring assy, 6 High Energy clutches and new steels is $375. Quantity pricing available, call for details.
TH400 Smooth Inner Race Direct Drum Assembly with 34 Element Sprag-
Early style TH400 drum, quality inspected, new Borg Warner 34 element sprag installed, spiral retaining ring to prevent high rpm detachment. Install your piston, return springs, and clutches. $250 shipped within the cont. U.S. (compare to $350+ at big name vendors).
The bare drum is $120 shipped. Drum assembled with new 34 element sprag, HD race, and spirolock ring is $300. Hot loaded with new apply piston, return spring assy, 6 High Energy clutches and new steels is $375. Quantity pricing available, call for details.
TH400 Smooth Inner Race Direct Drum Assembly with 34 Element Sprag-
Early style TH400 drum, quality inspected, new Borg Warner 34 element sprag installed, spiral retaining ring to prevent high rpm detachment. Install your piston, return springs, and clutches. $250 shipped within the cont. U.S. (compare to $350+ at big name vendors).
TH400 Forward Hub-
Rollerized-
We sell a stock forward hub that is machined to accept a torrington bearing at the critical direct drum mating area.
The direct drum spins approx 85% of engine rpm in reverse in low gear, while sitting next to it, the forward hub is spinning engine rpm forward. At 6000 rpm this is over 11,000 rpm differential. This is why we use a torrington in our builds.
Rollerized stock forward hub- $40
The stock forward drive hub needs attention anytime a transbrake is used or the power levels exceed 750 HP/TQ.
We sell a billet version that also incorporates the torrington bearing.
Rollerized billet forward hub- $130
Rollerized-
We sell a stock forward hub that is machined to accept a torrington bearing at the critical direct drum mating area.
The direct drum spins approx 85% of engine rpm in reverse in low gear, while sitting next to it, the forward hub is spinning engine rpm forward. At 6000 rpm this is over 11,000 rpm differential. This is why we use a torrington in our builds.
Rollerized stock forward hub- $40
The stock forward drive hub needs attention anytime a transbrake is used or the power levels exceed 750 HP/TQ.
We sell a billet version that also incorporates the torrington bearing.
Rollerized billet forward hub- $130
TH400 Output Shafts-
Passenger car and truck shafts differ as seen in the photo. The issue is when using a truck output shaft the regular slip yoke used on passenger cars loses over 1/2" of engagement and in many cases the driveline must be shortened a corresponding amount.
Be sure you use the proper output shaft for the application. The quick easy method of identification is look for a threaded hole in the end of the shaft. If the hole is threaded you have the truck shaft.
We are able to machine the truck shafts to take the place of the hard to find passenger car shafts.
Machined output shafts are $50.
We also have other configurations of output shafts. Contact us for your needs.
Passenger car and truck shafts differ as seen in the photo. The issue is when using a truck output shaft the regular slip yoke used on passenger cars loses over 1/2" of engagement and in many cases the driveline must be shortened a corresponding amount.
Be sure you use the proper output shaft for the application. The quick easy method of identification is look for a threaded hole in the end of the shaft. If the hole is threaded you have the truck shaft.
We are able to machine the truck shafts to take the place of the hard to find passenger car shafts.
Machined output shafts are $50.
We also have other configurations of output shafts. Contact us for your needs.
TH400 Pro-Transbrake Valve body-
A high quality fast releasing TH400 Pro-Brake. It is our most popular valve body, excellent design with reasonable price. It does not require the button for reverse, reverse burnup is eliminated this way. Reverse manual design, very short 3rd gear circuit results in QUICK shifts.
$435 shipped within the cont. U.S
Griner CNC'd Billet TH400 Transbrake valve bodies.
Several options available from the standard G10 Pro-Tree design up to the spragless G25.
G10 is the valve body many have been judged by.
It features super fast release, lighter weight than stock, clean sheet design.
$595 shipped within the cont. U.S.
G15 is the clean neutral version of the G10. It allows shifting to neutral safely at the end of a pass to reduce load on aluminum rods or high rpm combos.
$695 shipped within the U.S.
The G20XST or XAL is a spragless design. It eliminates the weakest part of a TH400 and makes it bulletproof at elevated power levels.
$1150 with an iron drum, $1550 with an aluminum drum.
G25 is the spragless safe neutral design.
$1250 for iron drum version, $1650 for aluminum drum version.
We also sell the G35 design for the extreme offroad crowd. It eliminates the sprag but doesn't use a transbrake.
It is $1295 shipped.
TH400 Manual/Auto Valve Body-
OEM valve body and seperator plate cleaned, inspected, and modified crisp shifts and manual control of upshifts and downshifts into 1st and 2nd but retaining automatic features in Drive range.
$100
TH400 Forward Pattern Manual Valve Body-
We offer a full manual forward pattern valve body for customers who do not want to run vacuum to their transmission and desire full manual shifting.
$125
TH400 Reverse Pattern Valve body (iron core-
Reverse pattern VB for racing use.
$155
TH400 Aluminum Competition Reverse manual valve body-
$220
TH400 TransGo 1-2 Reprogramming Kit-
While we don't use the TransGo kit in our builds, it is an excellent performer in musclecars and hotrods up to 500 HP. It offers ease of installation for the DIY'er and is the only way to dual feed a TH400 without internal modifications. This is a major advantage of the TransGo kit over other TH400 valve body kits.
$70
Pre-Installation in valve body available, drop your valve body and plate, install the TransGo plate and pre-built valve body, bolt it up, and Go!
$150 for kit and pre-built valve body.
OEM valve body and seperator plate cleaned, inspected, and modified crisp shifts and manual control of upshifts and downshifts into 1st and 2nd but retaining automatic features in Drive range.
$100
TH400 Forward Pattern Manual Valve Body-
We offer a full manual forward pattern valve body for customers who do not want to run vacuum to their transmission and desire full manual shifting.
$125
TH400 Reverse Pattern Valve body (iron core-
Reverse pattern VB for racing use.
$155
TH400 Aluminum Competition Reverse manual valve body-
$220
TH400 TransGo 1-2 Reprogramming Kit-
While we don't use the TransGo kit in our builds, it is an excellent performer in musclecars and hotrods up to 500 HP. It offers ease of installation for the DIY'er and is the only way to dual feed a TH400 without internal modifications. This is a major advantage of the TransGo kit over other TH400 valve body kits.
$70
Pre-Installation in valve body available, drop your valve body and plate, install the TransGo plate and pre-built valve body, bolt it up, and Go!
$150 for kit and pre-built valve body.
TH400 Output Shaft Torrington Kit-
The TH400 with helical cut planetaries thrust loads to the rear. This loads the output shaft to case thrust location tremendously in racing applications, particularly with heavier vehicles.
We rollerize the rear thrust in all of our builds. These parts are also included in our TH400 Rebuild Kits however we offer them seperately for upgrading other less complete kits. No machining required, near drop in installation. Rear endplay shims included.
$25
Shown on top is stock selective 3 tang thrust washer and brass thrust washer.
Shown below is the kit.
The TH400 with helical cut planetaries thrust loads to the rear. This loads the output shaft to case thrust location tremendously in racing applications, particularly with heavier vehicles.
We rollerize the rear thrust in all of our builds. These parts are also included in our TH400 Rebuild Kits however we offer them seperately for upgrading other less complete kits. No machining required, near drop in installation. Rear endplay shims included.
$25
Shown on top is stock selective 3 tang thrust washer and brass thrust washer.
Shown below is the kit.
Special Clearance Items - We have two complete TH400 variable pitch setups including converters. One pump with solenoid, input drum with shaft, converter, and case connector included with each assembly.
PAE 4000 converter setup. 1400 low stall/4000 high stall. Complete setup $550 plus shipping.
Pro-Torque 3000 stall setup- $500
PAE 4000 converter setup. 1400 low stall/4000 high stall. Complete setup $550 plus shipping.
Pro-Torque 3000 stall setup- $500
