Pontiac 326 400 455 Flat Guide Plates (5/16" Pushrod - 7/16" Stud Hole - 1 Pc.) This Speedmaster 300M steel crank

This Speedmaster 300M steel crank gear

offering an unmatched solution for a wide spectrum of vehicles

forcing your rear tires to turn at the same speed

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

a chrome dipstick head with an O-ring seal

Pontiac 326 400 455 Flat Guide Plates (5/16" Pushrod - 7/16" Stud Hole - 1 Pc.) This Speedmaster 300M steel crankYou 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.