My Weiand on my 605 made 765ftlbs@3500rpm. I d never even consider going to a single 4bbl after getting TR dialed in. It's got fantastic street manners and explosive acceleration. I'd love to see a comparison on your motor b/t your current Weiand tunnelram and the Indy tunnelram w/ a plenum spacer on it. Back when I was considering using a tunnelram, all the hemi guys said anything less than the Indy wouldn't be worth it and even the Indy needs a big plenum spacer on a big inch motor.
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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