Good point, EH. A stock size pickup line all the way to the carb limits horsepower to about 400-450 continuous flywheel bhp, no matter how much potential is there. The stock OD is simply too small to flow enough fuel (with a carburetor. EFI with 8X the fuel pressure may give slightly more max BHP.) Note this is not 'momentary' horsepower as in passing, etc.
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