Just some F.Y.I. 06 tc heritage. bored to 10 over 95, 10.25-1 pistons, port polished heads,s&s 510 geardrive cams. .40 thou head gaskets. 215 psi static comp, couldnt ride it, touch throttle and wiplash, forget putting through the country. had to do something. talked to Fueling about cams, selected 543 cams with some overlap. comp @ 195. could ride her but detonation was still bad. went to 60 thou head gaskets comp at about 175. pleasant to ride now lots of power, but still have detonation some when loaded heavy. i learned that you get1psi per thousandth of head gasket change. at least thats what i got. Be safe bro's...