After determining a rusted no#7 intake valve causing 80% leak down. I pulled the heads this past weekend and decided to clean them up and box-em. I found a another matching set of C8AE-H castings from a head porter friend as I'm wanting to keep this motor appearing accurate but would like to make a little more power. So he found a set of custom Ferrea 26* 2.095 intakes locally cheap. Installed, cut the seat to 45* and cut the bowl then blended. Now were setting at a 90% choke (better than the 93.2% in stock config with the 2.030's) and these are the numbers so far @28".
.100 74
.200 167
.300 217
.400 222
.500 246
.550 256
Haven't tackled the exhaust yet. But I see major issues with 3 of the 4 ports having heat risers exiting to the intake and killing exhaust port speed. Talked with Alex at Alex's Parts today and he commented that some old timers had poured aluminum in to seal up the heat riser exits and then blended the ports. I was interested in finding out if anyone has performed this mod and how it worked out?
