Speedmaster®

Ford C4 Automatic Transmission 0.788" 26/24 Spline Billet Steel 300M Input Shaft

US $129.10
Single Points Earn 129 Points

In Stock — Ships within 24 hrs from California

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MPN PCE602.1008 UPC840136562832

Product Information

Overview

These Performance Automatic hardened input shafts are custom-forged from 9310 non-twist steel. Quality, performance and great value make these hardened input shafts an essential component for anyone looking to raise their transmission to the next level.

Specs

Brand:Speedmaster
Part Number:PCE602.1008
Part Type:Automatic Transmission Input Shaft
Input Shaft Material:Billet Steel 300M
Quantity:Sold individually.
Notes:This input shaft converts from early C4 .788" 24 spline to late C4 .839" 26 spline.

Description

The early model C4 (1964–1969) used a .788-inch 24-spline input shaft, which was upgraded in 1970 to 26-spline and .839-inch. The upgrade also included a matching clutch hub of 26-spline. In 1971, Ford went to a .839-inch 26/24-spline input shaft, meaning the torque-converter side is 26-spline and the clutch hub is 24-spline.

Models:

PCE602.1003 - 24/24 spline 0.788-inch : 1964–1969 C4, C5, C6, C7, C8, C9
PCE602.1002 - 26/26 spline 0.839-inch : 1970–1970 D0
PCE602.1001 - 26/24 spline 0.839-inch : 1971–1979 D1, D2, D3, D4, D5, D6, D7, D8, D9
PCE602.1008 - Early to Late Converter: 26 spline 0.839-inch to 24 spline 0.788-inch

Warranty Information

12-Month Limited Worldwide Warranty

Prop 65 Warning

This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Installation Guide

Our AI assistant generates a step-by-step guide for this product — covering installation, maintenance, and troubleshooting.

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This AI-generated guide is for general reference only and does not constitute official Speedmaster product documentation. Always verify fitment, torque specifications, and safety requirements before installation.