Isky Cams High Endurance Dual Valve Springs (Red) - 1.550" O.D., .740" I.D., 210 lbs. @ 1.900" 3552024-155- L Increased ring and pinion gear

Increased ring and pinion gear life

This manifold will not work with factory fuel rails and requires the use of Holley Fuel Rail Kit 534-218

Aluminum frame features a built-in front oil pan gasket retainer and an idler gear cradle for accurate cam timing throughout the RPM range

the latest design and materials with features designed for all levels of motorsports

Isky Cams High Endurance Dual Valve Springs (Red) - 1.550" O.D., .740" I.D., 210 lbs. @ 1.900" 3552024-155- L Increased ring and pinion gearTest proven for 700 racing miles, High Endurance Valve Springs are wound from "Super Clean" chrome silicone wire. Perfect for Late Models, Modifieds and other applicatons running up to 8000 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 in Isky's new enlarged dyno facility. To