Dura-Bond Valve Spring Shim - 0.030 in Thick - 1.270 in OD - 0.570 in ID (Set of 100) Exhaust This provides a steady and

This provides a steady and consistent rpm for firm holeshots every time

1900 / 7000 RPM

as well as other characteristics

1967-1972 Chevrolet Bel Air

Annular boosters deliver excellent signal and throttle response

Dura-Bond Valve Spring Shim - 0.030 in Thick - 1.270 in OD - 0.570 in ID (Set of 100) Exhaust This provides a steady andProduct Description: Valve Spring Shim 0. 030 in Thick 1. 270 in OD 0. 570 in ID Steel Set of 100 Dura Bond Bearing Company is a world leader in camshaft bearings, power metal valve seats and valve spring shim design and manufacturing. This has been recognized by over 50 years of experience as the standard of the industry, and the internationally recognized ISO 9001 and MRP Oliver Wight Class "A" certifications. The natural process of matching