Butler Performance Inc. News

Engine Balancing — Internal (Neutral) vs. External (Stock) Balancing is one of the most common questions we get. Balancing the crank means weighing each part of the rotating...

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...

Butler Performance · Pontiac Tech Pontiac Cylinder Head Identification Pontiac heads are identified by a short casting code cast near the valve covers — not the full part number. The code...

Butler Performance Tech Reference Pontiac Body Types: The GM Platform Guide Know your A‑Body from your F‑Body. The body code on your...

Cam Install Section 1- Install with Fuel Pump Eccentric for Manual Fuel Pumps Section 2- Install with a Cam Retaining Washer for use with EFI   Section 1- Install with Fuel...

Pontiac Block Main Cap Identification We get many questions on main cap types on Pontiac blocks. This causes much confusion when choosing dip stick tubes with and without a windage tray....

Pontiac Cast Iron and Aftermarket Valve Sealing We get many questions regarding the intake seal styles on cast iron and aftermarket heads. Pontiac factory cast iron heads came with different...

Pontiac Timing Cover Identification 4-bolt, 8-bolt and 11-bolt covers: which one you have, which water pump, plates and balancer go with it, and how to upgrade. On a Pontiac V8...