S&s cycle heads cyl 84-99bt slvr

Designed as an out of the box replacement part for smaller displacement engines, these S&S heads provide a significant performance increase. Whether you’re looking for an easy way to run a high lift cam, or are faced with refreshing a tired engine with an overhaul, these heads will let your engine breathe while providing the same compatibility as stock heads. FEATURES AND BENEFITS: ??Compatible with stock or other flat topped pistons ??Heads can be decked .060" if higher compression is desired ??Port design increases flow, while maintaining velocity specifically designed for stock and small displacement engines ??Compatible with up to .585" lift cams with TDC lifts of .252" intake and .210" exhaust ??Stock diameter ports allows installation of original intake manifolds and exhaust ??Stock temperature sensor location for EFI equipped engines ??High compression is 76cc, low compression is 82cc in chamber