Pretty sure there was a more recent dyno test done by Dulcich I believe. He did a stock 383 magnum and also a 440 magnum. The 383 made almost exactly 335 hp IIRC and the 440 made around 350 hp. I'll see if I can dig those articles up...was in Mopar Muscle mag I think.
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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