4L80E Competition Components

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.

All OEM 4L80E Direct Clutch Piston fall short in performance applications. This kit includes all of the necessary components to upgrade the OEM 4L80E direct clutch piston for heavy duty/high performance use. Furnishes a huge increase in direct clutch torque capacity.

This one of a kind part introduces a press fit between the direct drum and the sun gear shaft. By doing this the direct drum and sprag assembly is forced to run on the transmission center line. This keeps the sprag from angular overrunning in hi gear which can destroy the sprag. Other benefits are less harmonics in 1st and 3rd gears and reduced wear between the drum and center support. Fits all 1997 and up 4L80E center lube transmissions.

The one piece OEM 4L80E stamped steel apply/release spring retainer is an accident waiting to happen. The flimsy retainer eventually deforms and bows out, then contacts the rotating direct clutch housing, either failing the housing or the intermediate clutch plates. Either way it’s a loser. This kit includes the sturdy OEM TH400 stamped steel apply/return spring retainer and a new set of 12 high rate intermediate clutch apply/release springs to replace the failure prone one piece OEM assembly.

An excellent addition for all heavy duty and high performance build ups. The center support is bored out and fitted with an oversize billet aluminum intermediate clutch piston, which increases the clutch pack application/clamping force by 500 pounds.  The end results are firmer 1-2 upshifts and a huge increase  in intermediate clutch pack capacity. Fits all 1991 to 1996 models.

An excellent addition for all heavy duty and high performance build ups. The center support is bored out and fitted with an oversize billet aluminum intermediate clutch piston, which increases the clutch pack application/clamping force by 500 pounds.  The end results are firmer 1-2 upshifts and a huge increase  in intermediate clutch pack capacity. Fits all 1997 thru early 1999 center lube models assembled with OEM center support having casting # of 24203394 or 8678032 with overall height of approximately 4.224".

An excellent addition for all heavy duty and high performance build ups. The center support is bored out and fitted with an oversize billet aluminum intermediate clutch piston, which increases the clutch pack application/clamping force by 500 pounds.  The end results are firmer 1-2 upshifts and a huge increase  in intermediate clutch pack capacity. Fits all late 1999 and up center lube models assembled with OEM center support having casting # of 24203394 or 24207225 with an overall height of approximately 4.184". IF YOU ARE CHOOSING THIS OPTION,  YOU ARE NOT REQUIRED TO SEND IN A CORE.

An excellent addition for all heavy duty and high performance build ups. The center support is bored out and fitted with an oversize billet aluminum intermediate clutch piston, which increases the clutch pack application/clamping force by 500 pounds.  The end results are firmer 1-2 upshifts and a huge increase  in intermediate clutch pack capacity. Fits all late 1999 and up center lube models assembled with OEM center support having casting # of 24203394 or 24207225 with an overall height of approximately 4.184". IF YOU ARE CHOOSING THIS OPTION, YOU ARE AGREEING TO SEND IN A CORE "PRIOR" TO RECEIVING YOUR SHIPMENT.

This is a remanufactured OEM 4L80E direct clutch housing with new Borg Warner 34 element sprag, OEM outer race, retainer and spiral lock ring.

This Kolene processed pressure plate is a must for extreme duty 4L80E applications. A thoroughly cleaned, inspected, and parallel decked OEM direct clutch pressure plate receives a proprietary nitrocarburized case hardening process, increasing its fatigue strength, wear resistance, and lubricity for a major improvement in component performance and durability.   

This Kolene processed component is a must for extreme duty 4L80E applications. A thoroughly cleaned, inspected, and parallel decked OEM forward clutch pressure plate/direct clutch hub receives a proprietary nitrocarburized case hardening process, increasing its fatigue strength, wear resistance, and lubricity for a major improvement in component performance and durability. Eliminates wear at the splined interface between the direct clutch plates and direct clutch hub.