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815Hp, 640TQ, 438 ci, 1970 casting iron heads w stock valve sizes, 11.3 compression, 2-625 Carter carbs, good intake, aggressive roller cam, 2.25 headers, mid 1990's technology.
Yup, 800hp is pretty attainable with good heads on a 426 + 0.030" over. I was making in excess of 600hp with my first 426 hemi...The heads are the key, and you can spend as much as you want in that area. Best heads for it are Stage V Millenium heads at that level or RBRE SS heads which are Stage V anyways....
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