TH350 Competition Components

A recommended upgrade for all TH350 applications behind engines producing between 400 and 800 foot pounds of torque. Manufactured from proprietary steel billet material, the shafts redesigned  profile includes a torsional center, vastly improving power transmission.  Undercuts behind the splines are eliminated, resulting in increased spline length and diameter, increasing spline engagement at the clutch housing interface over 20%. Improved press fit over OEM design reduces spline interface failures. Fully CNC machined, splined, and ground .

Oversize low roller clutch and matching lo support reduce lo roller clutch and outer race failures. A must for heavy duty and transbrake applications that do not use the low clutches in manual 1st gear. The factory metal thrust washer installed between the sun shell and lo roller clutch outer race lacks durability and thrust surface area. This precision ground outer race is outfitted with a roller bearing assembly that replaces the thrust washer. This bearing reduces internal friction and horsepower loss created and consumed during normal internal component rotation. It also increases the thrust surface area between rotating components and improves power transmission.

The heat treatment of the OEM intermediate clutch outer race is too hard for the hoop stresses the race encounters in high performance street/strip applications. This results in outer race failure when the hydraulic circuitry has been modified to reduce intermediate clutch slippage. A fully inspected OEM intermediate clutch outer race is treated to a proprietary stress relief process, resulting in a component  suitable for high performance applications.

The OEM light and medium duty planetary carriers are fit with a rotating outer thrust washer assembly. Due to their propensity to rotate,  the washers quickly erode when exposed to high thrust loads, such as those encountered in high performance street and strip applications. To increase the service life and performance of the component, the OEM heavy duty carrier is fit with a revised  thrust washer assembly. Two integral locating tabs "ground' the outer washers to the carrier housing during thrust loading, prohibiting rotation, which vastly reduces washer wear. This output carrier is an excellent choice for all high load and off road vehicles which spend extended periods of time operating in reduction.

This Lightweight OEM intermediate clutch piston allows the installation of one additional clutch and steel plate with two clutch models, increasing the clutch pack count from two to three plates. Furnishes a 50% increase in intermediate clutch torque capacity. Works with integral one piece retainer and spring assembly only.

The factory metal thrust washer installed between the front internal gear and front planetary carrier lacks durability and thrust surface area. This upgraded planetary carrier is fit with a roller bearing assembly that replaces the failure prone thrust washer. This results in reduced component rotation resistance, which reduces transmission related horsepower losses and improves power transmission.

The factory metal thrust washer installed between the rear internal gear and rear planetary carrier lacks durability and thrust surface area. This upgraded ring gear is fit with a roller bearing assembly that replaces the failure prone thrust washer. This results in reduced component rotation resistance, which reduces transmission related horsepower losses and improves power transmission.

This specialized direct clutch housing assembly is fit with a mechanical diode one way clutch assembly, replacing the failure prone OEM one way clutch assembly. A fully CNC machined and shaped inner race is used to fit the assembly to the clutch housing, and a spiral lock ring provides positive retention. Includes a four friction intermediate clutch pack with face grooved high-energy clutch plates. This exclusive CK Performance product is the strongest and most reliable of its kind and has proven itself deep into the 9 second zone, and much more reliable than a 36 element sprag assembly.

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The revised design allows the installation of one additional clutch and steel plate with four clutch models, increasing the clutch pack count from four to five plates. Furnishes a huge increase in direct clutch torque capacity.

The revised design allows the installation of one additional clutch and steel plate with four clutch models, increasing the clutch pack count from four to five plates. Furnishes a huge increase in forward clutch torque capacity.

It is a common occurrence for the OEM intermediate one way clutch retaining ring to be ejected from its groove in high performance and competition applications, resulting in parts failures. This high quality heat treated snap ring features a full 360 degrees of engagement ensuring positive ring retention in its groove under extreme duty and high rpm operating conditions. A must on all TH350 build ups.

The installation of this updated pressure regulator spring will raise maximum line pressure to approximately 195 psi, resulting in quicker and firmer shifts and increased torque capacity at all throttle angles.

This kit includes a new set of OEM pump gears coated with military grade PTFE Teflon. The coating reduces/eliminates any wear resulting from contact between the gear set with the pump body and pump cover which has become a major concern with the TH350 transmission in high output applications. Replaces OEM .721" gearset.

This OEM intermediate clutch piston allows the installation of one additional clutch and steel plate with two clutch models, increasing the clutch pack count from two to three plates. Furnishes a 50% increase in intermediate clutch torque capacity. Works with integral one piece retainer and spring assembly only.