[1blackbb66]

Depending on what carb you have..........call their tech line. I have a Edelebrock (Carter) 750 CFM on my 460 and all I did was call the tech line, told them engine, cam, trans, rear gear, tire size and weight of the car and they told me what jets and needles to start with. When I did go and have it dynoed, they said it was right on the money.

Ray