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Jack Z,
Sorry for the confusion. No it's certainly not a bad idea. What I meant by "It will bite you", was the difference is so astounding, and so obvious that it will bite you. e.g. not subtle differences.
Specifically, using Dyno 2000, run the numbers on a baseline 351 engine. Use a combo you'd use in your car with respect to bore, stroke, CR, intake, carb, exh, cam, valve sizes. Use the 2.02/1.60 in a typical aftermarket Windsor head. P. tq @ 4500 RPM, P. HP @ 6500 RPM. Good street motor.
Change the stroke from 3.50 to 3.85 (393), with everything else the same. P. tq & P. HP RPM drops, and gets worse as you increase the stroke to 4.0 (408), and 4.17 (427). The 2.02/1.60 valve sizes that work well on a 350 size motor is hurting you as displacement increases to 400 CI and up. Then run this exercise over again using large port canted valve 2.19/1.73 (Cleveland heads). (Dyno 2000 has specific sections for Ford, Chevy, Mopar, and other motors, so you're not building a Ford motor with Chevy parts).
In short, at 400 cubic inches, the Cleveland head vs Windsor head side by side comparison "will bite you!"
And the irony is this. You almost can't give a set of Cleveland 4V heads away. Nobody wants 'em. So let's keep our little secret on what these heads will do on stroker motors (Cleveland or Windsor), and what these 427's could do in the right hands.
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