Isky Cams 10 Titanium Valve Spring Retainers R10003XL Chevrolet Biscayne Base 454 1958

Chevrolet Biscayne Base 454 1958 to 1964

Ram Fullsize Truck 2019-21

313 in x 7

- Seat Pressure 245 @ 2

Fits 1968-1972 GM A-Body

Isky Cams 10 Titanium Valve Spring Retainers R10003XL Chevrolet Biscayne Base 454 1958Isky 10 Degree Titanium Retainers fit Isky's damperless #ISK9935 Valve Springs. 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 properly evaluate and prove the efficiency of Isky racing cams and valve train components, Isky maintains a continuous