Quote:

BG 400 checks 1 gal in 14 sec at carb. Swapped Dominators,plugs,timing,valves...starts good, sounds crisp pulls like a good 383 not a 820 hp 500".



The leakdown is not that bad for standard file fit rings, however, if they are zero gaps, that's real bad. But I would look at the oil filter first if you've lost that much power, to make sure nothing in the engine is suffering. If it were a fuel problem, I would think it would fall on it's face at WOT.