Isky Cams Tool Room Dual Spring / Damper Valve Spring - 500 lb/in Spring Rate - 1.200 in Coil Bind - 1.560 in OD - Set of 16 JM-S-F-STX 1977-1985 Chevrolet Caprice Classic CID

1977-1985 Chevrolet Caprice Classic CID 305 Naturally Aspirated GAS

Oil Pan Inspection Plug

1976-1977 Ford P-500

These fittings feature the latest in racing plumbing

Works with R4 A/C compressor

Isky Cams Tool Room Dual Spring / Damper Valve Spring - 500 lb/in Spring Rate - 1.200 in Coil Bind - 1.560 in OD - Set of 16 JM-S-F-STX 1977-1985 Chevrolet Caprice Classic CIDTest 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