Just an update. Finally got the car to the Dyno. It's been a long journey on this build and a lot of the great advice here I didn't adhere to as my builder had a different mind set. As I stated before if Chyco could build it, and stand by the work and parts list I'd love to do it. Instead I wanted my builder to not blame any of my parts for failures down the road and stand by his work. Which he has done. (I had a comp cams rocker fail on me a few times and he was more than happy to stand by it and fix it. the pushrod came out of the seat a on a few occasions).
Some other things that came true as predicted by most. The Edelbrock heads even CNCed are a limiting factor. With that said based on my power numbers and potential for piston speeds to get excessive over 5500 RPMs I'm still happy with how everything turned out. It made 475 wheel hp at 5300RPM and 480tq at 4800rpm. So taking into account drive train loss of 22% (I've read that the TQ flight eats more than that) but 22% is conservative and that puts me around 600 crank hp which I'm pleased with. That is also 32 degrees timing. They think we can bump it to 36 and get it to 500hp, but wasn't worth the risk at getting some poor fuel for the power gains. Down the road if I ever make it strictly a hot street car I can change out the cam and likely get some more out of it. I just put some Nitto NT555's on it, and now it grabs in first gear which is great! Thats the end of my journey. Just another way to skin the cat. With a higher $ top end, I think you would quickly find the limits of the old big block as you start to move the power curve up the RPM band. I hope this combination lives a long life with a rev limiter at 5800 rpms.