Hey looks like I've already visited this subject.
Oh well, it seems that the same subjects keep coming up, over & over. They are argued about, then dropped, then later, somebody else will start another thread on exactly the same subject.
I suppose it happens on all car forums.
Some will say just "Do a search". But, I've found that on this site, it does absolutely no good to do a search. I've tried many times. Get mostly stuff that has absolutely nothing to do with the subject I'm lookin for.
Just noticed that the '74 2-barrel 400 also can use 88.9cc heads, as well as the 1.25" venturi carb. So, it can have a bigger carb & more compression than the '74 350. MIGHT be a better combo ? But, would need a lower hp factor, than 255, to really be a good combo.
http://www.classracerinfo.com/Engine...6&MAKE=Pontiac