So everything changed vs when I started this build - maybe should start a new thread and delete this one, but here is how this all ended up.
Final engine combo ended up being:
4.670 Bore X 4.500 Stroke = 616 cid
Crower billet crank
Diamond Pistons - 16.3 to 1 ended up being the final compression ratio
GRP Aluminum rods - 6.76 long
Profiler 205 heads with 2.45 intake / 1.88 exhaust valves - Victory titanium
Twin 1150 Dominators modified by Carb Shop
Hogan sheetmetal intake - this was the source of some concern based on the small plenum. Engine builder thought there was a legitimate 40+ horsepower to be had by going with a much larger plenum.
Valvetrain:
Jesel rocker arms - 1.8 ratio - the stand for all rockers on each side is 1 piece - I really like that. Even my T&D rockers had separate stands that bolted to the once piece intake stand.
60 mm cam - with the modified firing order where #2 and #8 are switched (15486372)
Cam specs (general) - over .900 lift on both intake / exhaust - big duration with more on the exhaust, a wider lobe separation then you might think due to this being a heavy power glide car.
Jesel keyway lifters, lifter bores bushed for the keyway lifters
Manton pushrods
Manley Nextex springs with 450 on the seat, 1050 open.
Other notes:
Note that the exhaust on the dyno is actually my front exit headers for the car - we actually just turned them upside down to make them rear exit, for the dyno. You can see the last picture what the exhaust looks like in the car. The mufflers are actually V-banded on right after the collector. The mufflers are little 9" long Vibrant mufflers.
Power:
This combo resulted in basically 1,000 hp at 5900 rpm (996.2 actual) and 1,100 hp at 6,800 rpm and 1188 hp at 7,800 rpm -- still climbing but I didn't want to beat the engine on the dyno.
Peak torque was 887 ft-lbs at 5,900 rpm.
Once I get this thing down the track a few times and seeing where I end up - I might change the intake - I might not. Right now I just want to race, and if the car will already do 8.50s the way it is now, I probably won't change anything as the car will only cert to 8.50 right now anyway. We will see what happens here in the next couple weeks. At 7,000 rpm, this combo has over 200 more hp than the old combo.
Some pictures. I will add a dyno video also.
And after a couple days working on the car (installing the engine, headers, and then all of the small stuff) - here is what it looks like now:
Final thoughts:
I think the Ford C460 heads would have done just as well -- probably better as I could have gotten a set brand new and the heads could have been worked with the exact combo in mind. However I obviously don't have any specific info on the new profiler 221 head -- the ones on this build was the older profiler 205s.
If I decide I want more power in the future, first thing will be to get a new intake manifold. I got this one for a deal, used. I had a budget you know, so I tried to save a little money where I could, which ended up costing some power. This combo really should be 1200+ pretty easily.