Dan,
Thanks for your response. The casting number on the heads is C3AE-H. The intake is actually, I believe, a police interceptor intake...
So for clarity it should be a c6me 428 block, with c3AE-H '63/ 427 c.i.d. high performance low riser heads (2.08" intake valves, 1.64" exhaust valves & a 73-76cc chamber size), and then finally a 428 PI intake...
here's a pic:
http://www.barrett-jackson.com/image...A2_111_Eng.jpg
Does this give you enough to tell? Sorry for the mis-statements - I'm kind of learning as I go.
Thanks,
David