Here is an interesting build. LS7 Chevy, 440 inches, cam is hyd roller with 244/257 duration and it makes 700 hp at 7000 rpm. I think the difference is the heads. The LS7 heads are better than any Mopar head except maybe something exotic like a W8. I'm still surprised that this LS7 was able to make 700 hp at 7000 rpm with only 244/257 duration. I guess we have to assume that the article is correct but I think it would require at least 10 degrees more duration to pull to 7000 rpm if not more. https://www.hotrod.com/articles/tested-442-cubic-inch-ls7-dry-sump-stroker-700-hp-pump-gas/ You should read about the motor my engine builder won a competition with. Stock stroke, 11.66 compression 360. Made 773. Then 737 with mufflers on a 90 degree day at the competition to win it. Yep, heads matter. https://www.enginebuildermag.com/2018/11/eotw-376-cid-mopar-engine/
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car
Best so far, 10.32 1/4
1.41 best 60 foot
6.56 at 104.17
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