Great in theory so why not use theoritical and known outputs, example small block chevy at 5.7 say 500bhp, at 6,2 say 550bhp and upwards depending on kit fitted, then take a multvalve 4 pot, modern engine, 2 litre normally asperated say 225bhp and work something on those lines for the individual motor used, there must be pleanty of documented evidence of outputs out there, or get the engine dynoed and sealed by a reputable operator nominated by the club and before the unit is installed.
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