IT's probably making at least 1.2 lbs-ft per cid and peak hp around 5500 rpmWhat should a decent built 318 built to a 390 stroker make for hp? I know there are a million variables but average. Performance heads and I believe a 750 or 850 Holly double pumper….. It will go on a dyno but not now. I bought it built so I’m curious, it revs fast and sounds awesome! Any thoughts would be appreciated, thanks
View attachment 1716035294
View attachment 1716035295
441 hp @ 5500 rpm
468 lbs-ft @ 4000 rpm
Would be my guesstimation
Cid x lbs-ft per cid = peak torque
390 x 1.2 = 468 lbs-ft
Peak torque x 90% = torque at hp peak
468 x 90% = 421 lbs-ft
421 x 5500 / 5252 = 441 hp
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