Mechanical Roller Lifters - Pontiac (287-455) Wheel Bearing:Steel Needle Bearings Compstar rods were designed with

Compstar rods were designed with higher horsepower stroker motors in mind from the start

OE diameter ATI balancer with10-rib belt and billet bracketry

- High flow filter

Each Ultra billet crankshaft is uniquely machined with Ultra-Shed counterweight profiles

For street performance

Mechanical Roller Lifters - Pontiac (287-455) Wheel Bearing:Steel Needle Bearings Compstar rods were designed withBorowski Race Engines' lifters feature a 4 column design for ultimate strength and rigidity while minimizing mass. Deep roller bearing pocket provides maximum roller bearing shrouding, maximizing rigidity and thrust surface area with smooth rounded edges that minimize lifter bore wear. Made in the USA. Triple Alloy Steel Billet Lifter Bodies machined on state of the art CNC equipment. Machined with one and done concept for ultimate relational accuracy