TOP END KIT 74" 66-78BT 74" AND 80" TOP END KITS 74" AND 80" TOP END KITS Include a set of S&S Shovelhead-style cylinder heads, a pair of S&S stock bore cylinders (37/16??" for 74" engines or 31/2??" for 80" ) , forged 8:1 compression pistons complete with rings and wrist pins, manifold clamps, manifold seals, all required hardware, and gaskets Pistons are pre-fit to the cylinders, so there is no machine work to be done and very little down time Made in the U.S.A.
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