Pontiac 326 400 455 Flat Guide Plates (5/16" Pushrod - 7/16" Stud Hole - 1 Pc.) or working on your current

or working on your current shifter assembly

Designed for C4 transmissions in competitive environments where RPM levels approach or exceed 8

a chrome dipstick head with an O-ring seal

These are new castings

Speedmaster rock-solid race shifting Billet Street automatic shifters can give your street ride the feel of having a full-on race stick in your hand

Pontiac 326 400 455 Flat Guide Plates (5/16" Pushrod - 7/16" Stud Hole - 1 Pc.) or working on your currentYou need guideplates to keep your pushrods from deflecting under high rpm conditions. That's just what our Speedmaster guideplate sets do, they are made from 5140 Chromoly steel, nitrided and black oxide coated for corrosion and wear resistance.