The average 408...

yup. sad. my little home ported "302" headed 365 only made 540hp @ 6500 and 470ft-lbs @ 5000. that lack of horsepower was probably do to the gynormus 3/8" valve stems.

got sheet to post?

What shop dyno'd it?

What's the magical combo?

and at only 6500rpm with a 360 hmmm...