Need 318 help/advice
Hey Claude C, are you confused yet?
Part of the advice "scatter" is that Claude C has been unable to provide critical details about what cam He started with, what actual compression this thing has w/X heads, what size headers, etc., etc., the things that can have a dramatic effect on the low end. One of the effects of those heads is that the extra flow will make the 'teener more sensitive to being over-cammed, particularly if nothing was done to put the squeeze where it belonged. I had a former co-worker that raced a mid '70's Nova w/a 454 ran 12.40's, put a new set of headers on & lost 4 tenths, wondered WTF? lol! I said, "those look like 2&1/8", bigger than the old ones...", yep...sent them back & got a smaller set and back came the .4 sec., point is even big blocks are sensitive to "too big" syndrome.
To give good advice, one has to gather all of the relevent information first, then know precisely what the person wants.......IF they even know.....