Isky Cams Tool Room Dual Spring / Damper Valve Spring - 480 lb/in Spring Rate - 1.190 in Coil Bind - 1.560 in OD - Set of 16 MT-YXZ-MM-RM Designed For Continuous Heavy Duty

Designed For Continuous Heavy Duty AppsFord Racing offers a variety of products for hard core racing and street vehicles

One-piece die formed steel construction for extra strength

72-73 J-Series Truck

1986-1990 Ford Aerostar

1987-1996 Pontiac Firebird

Isky Cams Tool Room Dual Spring / Damper Valve Spring - 480 lb/in Spring Rate - 1.190 in Coil Bind - 1.560 in OD - Set of 16 MT-YXZ-MM-RM Designed For Continuous Heavy DutyTest 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