IIRC each calibrated rock can bring 8-10hp. You definitely need to get it on a dyno
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69 OHC ZH Sprint Hurst 3 Speed 3:55 (1 of 213)
99 Valkyrie 1520cc Flat 6 108hp/110tq - For Sale
http://sohcsix.yuku.com/forums/1/OHC-lounge
Wanted: 1969 OHC "H" Camshaft