Dyno day is done. Thankfully the engine is healthy and no problems, other than a pesky rear main seal leak. I give up with that. I was so meticulous and so careful. Just doesnt make sense how it leaks. But, i will be pulling the pan and windage tray off this fresh engine to try again.
Anyway, the results are as follows:
Street dominator intake with open 1” spacer with 850 carb: corrected peak 610 hp @ 5300 (might be higher-didnt get this printout, and screen cutoff at this rpm) and 634 tq @ 4600.
Swap to iron six pack: best pull after jetting up twice: corrected peak 576 hp @ 5400 and 608 tq @ 4300.
Ended up at 64 jets center, 88 driver side/84 pass side outboards.
Then bolted on aircleaner with old used fram filter: lost 4 hp.
Difference from street dominator with spacer to six pack= 34 hp and 26tq