[NHRASuperStock455SD]

Originally Posted by bobzdar

Will the single 4 and no spacer fit with a shaker hood? What were the cam specs? Really good numbers, would be awesome to hit 100hp/liter on a 400 or 428 based build and bolt on parts which looks possible if you carefully pick cam and valvetrain (for 7500 rpm?). 480" is what, 7.85 liter and you're at 740hp? Close out of the box with peak power at 6800rpm. Some better valve springs and a bit more cam and I think you get there on that big engine, so would be a little easier with a smaller engine (to hit 100hp/liter).

Yes we raised the the heads 5/8 and subsequently lowered the intake. The net gain over stock is about 1/4 inch which could be easily milled.