Si te vas a liar la manta a la cabeza pon esto:
https://www.sscycle.com/products/sa...06-16-hd-big-twins-silver-powder-coat-finish/
Más compresión y a la vez mejor flujo de aire, pues lleva las toberas ampliadas así como las válvulas. Le sumas un árbol adecuado a tu uso de la moto, y seguramente se ponga cerca de los 100cv
79cc heads
When 79cc stock compatible heads are used with stock H-D® pistons, TDC lifts of up to .186" for intake and .179" for exhaust and can be used without additional valve
pocket clearancing. This allows the use of S&S® 510, 570, and 585 camshafts. If cams with higher TDC lifts are used, or if the heads are decked, piston valve pocket
machining will be required.
79cc heads may be decked as much as .060" to increase compression. If heads are decked, piston valve pockets must be re-machined.
Moderate valve spring force in S&S Super Stock® cylinder heads allows the use of camshafts designed for the stock style chain cam drive system. However, for maximum
reliability and performance we recommend the S&S gear drive cams.
Must use S&S rocker base gasket kit part #90-4120 with stock rocker covers.