4L80E Competition Components

Use with engines producing up to 750 foot pounds of torque in vehicles weighing up to 4000 pounds. Input shaft is manufactured from proprietary steel billet material. Undercuts behind the splines are eliminated, resulting in increased spline length and diameter, increasing spline engagement at the overdrive planetary carrier interface.  Fully machined, shaped, and ground on precision CNC equipment. 

Use with engines producing up to 1300 foot pounds of torque in vehicles weighing up to 4000 pounds. Will handle more torque in lighter vehicles. Mainshaft is manufactured from 300M steel billet blanks. Undercuts behind the splines are reduced, resulting in increased spline length and diameter, increasing spline engagement at the forward clutch hub and rear internal gear interfaces.   Fully machined, shaped, and ground on precision CNC equipment. Fits 1997 and up models

Use with engines producing up to 1300 foot pounds of torque in vehicles weighing up to 4000 pounds. Will handle more torque in lighter vehicles. Mainshaft is manufactured from 300M steel billet blanks. Undercuts behind the splines are reduced, resulting in increased spline length and diameter, increasing spline engagement at the forward clutch hub and rear internal gear interfaces.   Fully machined, shaped, and ground on precision CNC equipment. Fits 91-96 models

This billet aluminum reverse servo piston assembly puts an end to failure of the OEM cast aluminum reverse servo piston. Direct fit for all 1997 and up 4L80E transmissions. Will fit all 1991 to 1996 models if 1997 and up reverse servo cover is used. Yes of course, it is made in the U.S.A.

Use with engines producing over 1250 foot pounds of torque in vehicles exceeding 4000 pounds.  Input shaft is manufactured Aermet 100 steel billet blanks. Undercuts behind the splines are eliminated, resulting in increased spline length and diameter, increasing spline engagement at the overdrive planetary carrier interface.  Fully machined, shaped, and ground on precision CNC equipment. 

Use with engines producing up to 1800 foot pounds of torque in vehicles weighing up to 4000 pounds.  Mainshaft is manufactured from Aermet 100 steel billet blanks. Undercuts behind the splines are reduced, resulting in increased spline length and diameter, increasing spline engagement at the forward clutch hub and rear internal gear interfaces.   Fully machined, shaped, and ground on precision CNC equipment. Fits 1997 and up models.

This kit includes the hydraulic system recalibration and assembly upgrades, as well as technical information  to handle big power. Multiple settings allow custom tailoring of the shift quality to the application.

This billet aluminum reverse servo piston assembly puts an end to failure of the OEM cast aluminum reverse servo piston. Direct fit for all 1991 thru 1996 4L80E transmissions. Yes of course, it is made in the U.S.A.

Use with engines producing up to 750 foot pounds of torque in vehicles weighing up to 4000 pounds. Mainshaft is manufactured from proprietary steel billet material. Undercuts behind the splines are reduced, resulting in increased spline length and diameter, increasing spline engagement at the forward clutch hub and rear internal gear interfaces. Fully machined, shaped, and ground on precision CNC equipment. Fits 1991-1996 models.

Use with engines producing up to 1250 foot pounds of torque in vehicles weighing up to 4000 pounds. Will handle more torque in lighter vehicles. Input shaft is manufactured 300M steel billet blanks. Undercuts behind the splines are eliminated, resulting in increased spline length and diameter, increasing spline engagement at the overdrive planetary carrier interface.  Fully machined, shaped, and ground on precision CNC equipment. 

Use with engines producing up to 750 foot pounds of torque in vehicles weighing up to 4000 pounds. Mainshaft is manufactured from proprietary steel billet material. Undercuts behind the splines are reduced, resulting in increased spline length and diameter, increasing spline engagement at the forward clutch hub and rear internal gear interfaces. Fully machined, shaped, and ground on precision CNC equipment. Fits 1997 and up models.

The installation of this upgraded pressure regulator spring will raise maximum line pressure to  approximately 195 psi. This raises line pressure 35-40 psi over stock, resulting in firmer shifts and increased transmission torque capacity at all throttle angles.  

This package facilitates the installation of the Reid Racing SFI bellhousings to a GM 4L80E transmission. This permits the adaptation of the GM 4L80E to small block, big block, and Gen 3 Hemi Chrysler engines; small block, big block and Modular/Coyote Ford engines; Buick, Cadillac, Oldsmobile and Pontiac engines; as well as update the case for Chevrolet applications. Includes precision machined and o-ringed oil pump body, aluminum adapter plate, and mounting hardware. Bellhousing sold separately and are from Reid Racing Super Hydra TH400 series. Requires 10.5" or smaller diameter torque converter.