A SECRET WEAPON FOR 454SS SEATS

Hardened valve seats even more enhanced dependability and assisted allow these engines to last a lot longer than the earlier versions, even with no defense Earlier furnished by leaded gasoline. 1974 was the last 12 months in the 454 while in the Corvette, although the Chevelle supplied it in the 1st 50 percent in the 1975 product year. It had been