Speedmaster®

Ford C4 Automatic Transmission 0.839" 26 / 26 Spline Billet Steel 300M Input Shaft

US $145.90
Single Points Earn 146 Points

In Stock — Ships within 24 hrs from California

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10M+ Items Shipped Worldwide

MPN PCE602.1002 UPC840136558613

Product Information

Overview

Our Input Shafts are constructed from hardened, aircraft quality high strength steel. They feature increased lubrication flow and strength with a resized diameter that provides optimum stress distribution along the entire length of shaft and along the extended high gear splines to the oil ring.

Specs

Brand:Speedmaster
Part Number:PCE602.1002
Part Type:Automatic Transmission Input Shaft
Input Shaft Material:4340 forged steel
Quantity:Sold individually.
Notes:Fits 26/26-spline input.
This shaft is very rare, only being produced 1 year. So please double check before purchase.

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.