Thanks for the input FAST.
We were a little surprised that the engine nosed over so early, but either it ran out of carburetor or the dual plane was not the best pick for the engine.
Forgot to check vacuum at full throttle to see if it was he carb...RATS!
Anyhow, we were pleased at the output, about 40 or 50 above our initial guesses
so after a couple of jetting and timing changes we called it a day.
Torque peaked at 651 @ 4261,
HP 620 @ 5543
Good TQ curve; 621 @ 2821
Does this help?
Joe
PS forgot that these numbers were with the Dyno's 1-3/4" test headers, went to put our 2" headers on and ran into fitment problems with the dyno
so that may account for choking the engine somewhat.
That is great torque at 2800. A converter as tight as what came behind a 340 , 383 or street hemi(all the same k factor) should stall well over 3,000. I built a 535 with 906 heads many many years ago that pushed a stock converter like that to about 3600! Well, it did for the three runs i made before it ate itself😒. So you have some room here if you want a very responsive package and are willing to give up ultimate ET . A. Tight 11 inch might put the best smile on your face!
