Suggestions for new design Aluminum Mopar SB clean slate (kind of) cylinder heads

92b said

Johnny has stated that these heads would be made with the intention of being used on 500 and less HP engines as laid out in his list of four criteria on post 1. Hypothetically, If you used 400hp as the low end and 500hp as the high end then 450hp could be the target for optimum port size. A little big for 400 hp and a little small for 500hp. This would be the base head used on his crate engines and available to the public to buy for their own use.

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Peak Hp is only one aspect, how efficiently each powerstroke is between **** and recovery points the flatter the power curve the faster the acceleration. One way to measure is lbs-ft per cid 2 408 making 450 hp but one making 1.15 lbs-ft per cid and the other 1.3 lbs-ft per cid the 1.3 lbs-ft will make power at a lower rpm being more efficient per powerstroke and will have a flatter higher average overall power curve. Plus heads that choke the engine power falls off rapidity after peak needed to shift sooner and drop further down in rpm per shift probably leaving you further outside the main powerband top 10% of hp slowing down acceleration.