Do the 234 heads need the same degree of extra radius and chamber blending on the short side as the 302 fast burn heads? What intake port volume do they have and what intake port volume do the pre 974 (155cc) heads have?
I have a set of STOCK 2.02 915 j heads that are 155cc int port.
The 974 in the pic cc'd with 1.88 int @160cc
The 2.02 tulip chrysler used takes up more bowl volume was always my assumption of the diff...compare them sometime.The differing port volumes.. 'after the 894 x and 915 J'.. i also , in retrospect , attribute to the port window area being bigger or smaller cast. Some were really sloppy..and some have more cast slop in the bowl 'smaller bowl due to more material Whether intensional or just a sloppy fashion of calculated casting for app 'trucks n vans'..there are measurable differences...that all is aside from the X and J which was an intake port floor revision of course.
