Madhatter wrote:
Kinda double posting here, put a thread over at the other site.
I do the same thing...different places tend to discuss different things.
Very cool for a core.....did it run when it came in? Is this a straight up rebuild?
I can see the wide lobes even in the pics. That alone tends to make the low end poor but coupled with big port and carbs I'd expect an exceptionally poor low to mid range. The Michelotto cars used 208 heads I'm told and I had one of those heads here because the guy who owned it was scratching his own head looking at how small the ports and valves where. After playing with it without a bit I mated it to a 308 intake, went up to a 38mm intake valve I think it was and got about exactly 308 peak flow but way more low lift flow and about 60% higher port velocity and dynomation was saying with stock carbs and p6 cams it would make in the 320-330hp range with better than stock low end which shocked the guy. Anyway once you plug everything into the simulator I think you'll find with those heads it will want less duration to be very happy on the street.
Interesting on the rods balancing. Do the caps alone all match too? I suspect they will. Matching total rods weights is a pain but getting them matched end to end is way more a pain. I'd never tried it before the franken12 and it took a long time and the methods I found on youtube to end weight the rods simply didn't work, at least not with my scale. The best I could do end to end was +/-0.25g but got the totals within my scale's limit. I went to pickup everything from the shop that balanced the crank damper and new flywheel done they had the shock "are the reciprocating parts were exactly the same, we've never seen that before......".