Is there any difference between 351W heads and 302 H.O. heads? If so..witch are better choice to have on the 351W? I know that some people run 289's on 302's for higher comp..is the same true for 302 to 351 or no?
The old 69-70 351w heads have bigger valves and intake runner.
Otherwise the 302 and 351w heads are the same. E7TE castings are albout as good as they get. The 289 heads do offer smaller combustion chambers but also smaller intake runners.
I ran 302 E7TE's ported and milled so they had about a 58cc chamber. Made a seat of the pants change in my 302. That then made me want a bigger motor.