CORVAIR VALVE SPRING ISKY HI PERFORMANCE SET (12) NEW

CORVAIR VALVE SPRING ISKY (P/N 4005) HI PERFORMANCE SET (12) NEW. If you are building a warmed up motor, you will want these. Great for hi performance applications. Will fit all Corvair engines that use the dual valve spring. Always replace when doing a valve job. Seat pressure is 115 pounds at 1.687 inches.