Isky Cams Tool Room Dual Spring / Damper Valve Spring - 470 lb/in Spring Rate - 1.170 in Coil Bind - 1.560 in OD - Set of 16 Exhaust Pipe Reducer 1966-1966 Pontiac Star Chief

1966-1966 Pontiac Star Chief

Cable Bracket Constructed from 12-gauge Cold Rolled Steel

5 in Length x 3

3/8 in NPT Gauge Port

Twist Lock Design

Isky Cams Tool Room Dual Spring / Damper Valve Spring - 470 lb/in Spring Rate - 1.170 in Coil Bind - 1.560 in OD - Set of 16 Exhaust Pipe Reducer 1966-1966 Pontiac Star ChiefTest proven for 1000 racing miles, Precision Tool Valve Springs feature the highest quality alloy wire and trade secret endurance processing. Great for Super Modifieds, ARCA, Grand National, NASCAR Trucks, Cup and applications up to 8800 RPM. As the world's largest racing, performance, and economy cam manufacturer, Isky maintains a dynamometer testing program for constant improvement of camshaft and valve train design. These tests are conducted daily