Description
Darton Sleeves Repl Cyl Sleeve Ford AR 4.490 Bore LY22371 AFR's trademark 3 4 thick head WEI7155 AFR's trademark 3 4 thick head deck makes them ideal for heavy nitrous or blower applications GM gradually added roller camshafts to 305's and 350's from the mid 80's forward Product Description: Using specialized ductile iron