Max horsepower with EQ heads?

gregsdart said

So what would the choke rpm be on a standardport big block 906 iron head be? Heads were ported, gasket matched to a regular port size intake. The motor is/ was 535 cubic inch.

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Not enough information. I know what the smallest cross sectional area of a 440-1 is and the smallest cross sectional area of the EQ heads I have here, but I don't know about the heads, particular gasket and intake that was used in your case. To me it is doubtful the engine would make any more horsepower at 6,500 rpm than it did at 5,500 rpm.

I know you are aware of this, but for those watching along, choke doesn't mean quit winding, but, not making more horsepower as it rev's. It's sucking all the air it can through that port restriction. No more air, no more horsepower, no matter how tight you wind it. But if you are making 600 horsepower, that could hang on for awhile and the vehicle would keep accelerating.