Butler Performance Inc. News

Pontiac Performance Upgrades The Butler-Built Bottom End The block, crank, rods, pistons, rings, and bearings are the foundation every Pontiac...

Old style vs new style rpm heads There are a difference in Edelbrock RPM heads made before 3-15-2002 and after. Here we show you the difference.   Heads made prior to 3-15-2002 have...

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Pontiac Rockers Rocker Types There are 3 basic types of rockers for Pontiacs. OEM Style Steel tip rockers, roller tip rockers, and full trunnion roller rockers. The differences are obvious...

Pontiac Trans Am Shakers and Drop Bases The Pontiac shaker was iconic on the 70's Trans Am's. When you pressed the pedal and would rev the engine it literally "shook" giving it the...

Butler Spec Head Gaskets There's a reason we designed our very own head gaskets, it's because we know Pontiacs. Felpro gaskets have been used on Pontiac engines for years and after many...

  ***The Morel lifter was updated in 2021 with a new oil band location and Comp Cams released the 85701 which is a replacement version of the 857 in 2022    ...

Engine Balancing- Internal (neutral) vs. External (stock) Assembly balancing is a very popular question. Balancing the crank is a method of weighing each part of an assembly and drilling the...

VITON DUAL LIP REAR MAIN SEALS Common Questions: Please read the included instructions carefully to make the installation easier and hassle free.    What is the...

Butler Performance · Pontiac Tech Pontiac Block Casting Identification Every Pontiac V8 from the 287 to the 455 shares the same external block — so the casting number, date code, and a few...