Howe Coil-Over Spring Rubber - Hard, Blue, 20 Lb Rate H762427XL ALL ENGINES - A re-torque

ALL ENGINES - A re-torque is recommended after initial start-up and cool-down (allow 2-3 hours for adequate cooling)

1966-1981 Chevrolet Caprice

velocity and efficiency in the design of this valve

3 in Rectangular Port

Four forehead intake vents

Howe Coil-Over Spring Rubber - Hard, Blue, 20 Lb Rate H762427XL ALL ENGINES - A re-torqueMade to fit 2 1 2" diameter coil spring. For quick, precise spring rate changes. These spring rubbers are made for racing from a special Polyurethane that out lasts rubber 4 to 1. Maintains 95% of its rate at 180 degrees. Made in soft, medium and hard, the rates are proportionate to the spring rate. Howe Racing Enterprises began building and selling chassis and components in 1971 and since then we have produced countless innovative products and over