The trusty Ford C4 automatic transmission has been helping propel FoMoCo hot rods, street machines, off-roaders, and race cars for decades. And although the C4 has proven plenty durable over the years, if you plan on running one behind a high performance engine creating tons of torque, it’s a smart idea to add some upgrades—specifically a stronger valve body.

That’s where the folks at Gearstar Performance Transmission come in.

gearstar C4 valve body underside
(Image/Gearstar Performance Transmission)

Gearstar makes billet aluminum valve bodies for the Ford C4 automatic that’ll withstand the rigors of track use. Precision machined with a superb balance of strength and weight, these valve bodies are the perfect upgrade for C4 transmissions used in race or off-road duty, or stuffed behind a rip snortin’ Blue Oval street engine.

These full manual, reverse pattern valve bodies are made in the USA and designed for the 1970+ later model variant of the venerable C4. They’re assembled with stout components to ensure smooth, predictable shifting and reliable performance, season after season.

Better still, Gearstar offers a Ford C4 valve body with a built-in Transbrake, tailor made for racing applications.

gearstar C4 valve body underside with trans brake
(Image/Gearstar Performance Transmission)

All told, if your classic Blue Oval is equipped with a later model Ford C4 transmission, a new valve body from Gearstar Performance Transmission is a smart way to ensure it’ll handle the rigors of a race engine or hot street motor. Click the part numbers below to see pricing and availability.

  • GES-GS26311 – Gearstar Performance Valve Body for 1970+ Ford C4
  • GES-GS26312 – Gearstar Performance Valve Body for 1970+ Ford C4, with Transbrake
gearstar C4 valve body with built in trans brake
(Image/Gearstar Performance Transmission)
Share this Article
Author: Paul Sakalas

Paul is the editor of OnAllCylinders. When he's not writing, you'll probably find him fixing oil leaks in a Jeep CJ-5 or roof leaks in an old Corvette ragtop. Thanks to a penchant for vintage Honda motorcycles, he spends the rest of his time fiddling with carburetors and cleaning chain lube off his left pant leg.