I am building a 383 SB Chevy engine for a 21' Scarab with a Bravo outdrive. It will be NA, approx 9:1 compression ratio. I have not purchaced the heads yet so feel free to chime in on that one as well. I have a Revoluition Marine exhaust system and it is a thru hull.
My engine builder has a roller cam setup at bargain price. Here are the specs.
Intake & Exhaust
Lobe Center Sep 110.4 Cam Deg
Valve Overlap 3.8 Crank Deg
Intake
Valve Opening -1.9 Deg BTDC
Lobe Center 105.4 ATDC
Valve Closure 32 ABDC
Duration 210.1 Crank Deg
Max Cam Lift .31429
Net Valve Lift .4714
Lobe Area 23.27 In * Deg
Exhaust
Valve Opening 44.8 BBDC
Lobe Center 115.4 BTDC
Valve Closure -1.9 ATDC
Duration 222.9 Crank Deg
Net Cam Lift .33799
Net Valve Lift .50699
Lobe Area 26.45 In * Deg
Will this one work without reversion. If so would I want the heads with larger valves?
TIA Ned
the comp cams 278xm is a pritty sweet cam
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