Isky Cams 7 Titanium Valve Spring Retainers RG400033XL Whether you're towing or simply

Whether you're towing or simply trying to harness the power of a built or boosted motor

Covers clear most double roller style timing chains

wastegate crack pressure

Chevrolet Impala Base 454 1958 to 1964

Isky Cams 7 Titanium Valve Spring Retainers RG400033XL Whether you're towing or simplyWidely used in sprint car and Grand National roller cam applications, Isky titanium retainers are 20 40% stronger than all other retainers because they are made from heat treated 100% aircraft quality bar stock. The Isky Super 7 Retainer and Lock system offers a more precise fit than Isky's standard Jumbo 7 degree Lock Retainer Combo. The Super 7 degree lock is actually closer to an 8 degree taper angle and incorporates a ground finish on the O. D. to