Is there a way to estimate the horsepower of my engine? Here's what I have, 235 originally from a 56 sedan w/powerglide now in my 46 1/2 ton with stock 3spd. It is totaly rebuilt bored out 0.060 with 0.050 shaved off the head, howard mild cam, fenton headers, offy intake with dual rochesters. The original engine had around 140 hp I was just curious about what it may be now. Anyone have a guess, or is there an easy to checkit?