Disappointed in my 383 on the Dyno

Rassnasty82 said

Timing is set at 37 wot with full msd system.


should I keep the heads or sell the performer rpm kit and buy a new top end from trickflo or a higher flowing head? Would it make more sense to just have these heads sent to a machine shop and just upgrade the cam before doing a stroker? I suppose it might make more sense to do it all at once

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I can only speak for a 440, but there is nothing wrong with the performer RPM head. In stock form it will easily get you in the ballpark of 500hp and 11's. In ported form it will easily make over 600 and go 10's.

Is there better than a ported RPm out there? IDK... At the time I bought mine, which flow 345 on the intake, there wasn't a better SP head available. Maybe the trick flows are better, I can't say.

I would highly recommend a solid roller cam cut specifically for your application.