Originally Posted By Mattax
That is how most 4150s are designed to work. (.020 to .040 on an old school Holley) All of those relationships are pretty much right from Holley's Mike Urich, Vice President of Engineering for Holley. (see pages 121-122 of the 1987 edition, p/n 36-73).


WHAT is how they're supposed to work? Not sure which post you were replying to, but I want to know what you meant

Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street