[Excaliber]

This engine "formula" is similar to the old Boss 302, which ran the Clevland heads in competition. THAT motor combination was quickly retired because in order to take advantage of the HUGE intake they would have to run 7000 rpm and higher on the road course. They blew a lot of engines.

...of course, that was then and this in now. NASCAR engines DO run 8000 rpm or higher and are NOT subject to extreme rpm ranges typically found on a road course. Plus, being more cubes perhaps the intake action is improved over the 302 of yester year.

Street use? I don't think so. I suspect this engine is strictly a high rpm application with a VERY limited life span.

Reminds me of WHY the AFR heads are about the best around! They are NOT the biggest valves, they DON'T flow the "most" air. But the DO make more consistent horse power through a broad rpm range. And in the end, make as much or more horse power than all but the most "radical" heads.

Ernie