Re: 351C 2V vs. 4V?
I think you'll have problems, the 2V heads have smaller intake ports than the 4V and you may cause fuel damming where the intake meets the head. The 4V head was not a head for street use but moreso a high rev head and performed best that way. I had both a 2V Mustang and a 4V, the 2V was a far better head for low rev high performance. If you got the bling you can get the 4V to smoke the 2V at any speed, but$$$