Chip it would be a fun test. I'm pretty sure I'm leaving some on the table with my setup. I'm pretty sure some spacers to increase the plenum volume would help. The current setup all fits under the hood, barely. I just don't have any room to go up without cutting the hood. I refuse to do that.
A modern tunnelram should easily out power it, but at the same time I can't use all the power I make now. I have to slow it down or get bounced off the track. I understand your situation! It would be an expensive test unless someone loaned you a manifold to try. I'd just love to see where the old school stuff stacks up. It's a shame there aren't more tests done like this, but I guess there aren't many people racing hemi in the grand scheme of things. Like when I was trying different single 4500 manifolds...I had to buy one of each to see how they compared. Sure, you can guess which one will run the best, but until you try em firsthand you don't know.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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