4x heads ok?
I've got a fresh 400 in my 67 lamnes with 4x heads. I'm thinking of getting them ported for a little extra umph. The guy I got the car from said that 6x heads are soo much better.. What should I expect to gain with the 6x's over ported 4x's? It has a mild cam , quadrajet and 3" pypes.
Thanks in advance,
Bill
|