http://popularhotrodding.automotive.com ... tions.html
look at the bottom and hit NEXT for more engines, notice that theres a good deal of simularity in the winning combos as far as compression ratio tends to be around 10.2-10.5:1 and valve sizes tend to be similar in that they tend be as large as the engine design allows and almost all the cams fall in the 240-255 durration range (YES THERES EXCEPTIONS) and the durration of the cam selected is related to the displacement of the combo, and the head flow rates.
ID also point out that these guys tend to be some of the better engine shops and when your limited in compression and rpm band, by the rules, "too run whats at least in theory a street drivable combo" you don,t see the absurd hp numbers that the magazine articles tend to post as realistic. but even these HORSEPOWER AND TORQUE numbers are well above what the REALISTIC REAL WORLD average engine produces ,thats expected to run for thousands of miles in a street/strip combo
look at the bottom and hit NEXT for more engines, notice that theres a good deal of simularity in the winning combos as far as compression ratio tends to be around 10.2-10.5:1 and valve sizes tend to be similar in that they tend be as large as the engine design allows and almost all the cams fall in the 240-255 durration range (YES THERES EXCEPTIONS) and the durration of the cam selected is related to the displacement of the combo, and the head flow rates.
ID also point out that these guys tend to be some of the better engine shops and when your limited in compression and rpm band, by the rules, "too run whats at least in theory a street drivable combo" you don,t see the absurd hp numbers that the magazine articles tend to post as realistic. but even these HORSEPOWER AND TORQUE numbers are well above what the REALISTIC REAL WORLD average engine produces ,thats expected to run for thousands of miles in a street/strip combo
