906 Head shop

clovis said

http://www.musclemotorsracing.com/muscle-mike-blog/119-cnc-ported-906-heads

I would say those numbers are not typical but they are attainable.

IQ52
What was the cam profile (lift/duration) on that monster? Even if your cam was .700 lift, you are almost 2.1 HP per cfm and with an open chamber, only 6900 rpms and not even 10.1 compression that is impressive.

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The boys at Erson Cams take pretty good care of me. Its an Erson solid roller, R304/510A intake lobe, R318/475S exhaust lobe, 112 LSA, 280/288 @ .050, .510"/.475" lobe lift, .790"/.734" net lift with 1.6 rockers. It was originally ground for a completely different application. It's what was conjured up for our Victor headed 500 ci 440 that made 845 HP on E85. It was back on the spare parts shelf so we pushed it in the 451 cam tunnel and gave it a whirl. Worked okay I guess.