I've got a 71 Dart with a 318 and an dual plane M-1 intake. Popped a vc off tonight and confirmed that it has the stock 318 heads.
So, unless I am mistaken about the M-1 intake, I have a large port intake breathing into small port heads. I've always heard that was a bad combination, but how bad?
Trying to improve the mpg on this thing, got 14 last time I checked. Thinking I should swap a 2bbl intake and fix the problem. Any thoughts?
Thanks!