Crower Solid Lifters (16) - Buick, Chevy R09P003L The proportioning valve may be

The proportioning valve may be adjusted to limit rear brake pressure to help prevent rear brake lock-up

2-5/8 in Diameter

A356-T6 Aluminum Construction

Arm works with most transmissions

1978-1985 Oldsmobile Toronado

Crower Solid Lifters (16) - Buick, Chevy R09P003L The proportioning valve may beBetter engine builders know that cam lobe and lifter wear is caused by inadequate oil lubrication at the cam and lifter surface. With today's high rpm, high rocker ratio and high spring pressures, cam and lifter failure is at an all time high. Crower's all new "CoolFace" lifter option is a must for these applications. Features a small diameter oil metering port (. 024") that is precision machined in the face of the lifter. No significant oil pressure