Butler Performance Inc. News

Pontiac Performance Upgrades- Butler Built Bottom End Bottom End Block- Stock blocks are all fine for the majority of Pontiac performance builds. Unless you want extreme, high...

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...

Spark Plug- Information Spark plugs do not create heat, they can only remove heat. The spark plug works as a heat exchanger by pulling unwanted heat away from the combustion chamber, and...

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...

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...

Pontiac Blocks Casting Information 1955-1963 Blocks up to 1963 have side of block casting numbers Up to 1963 have stud oiled heads...