wow, that is impressive! my 540 with a mild roller cam, stage V heads and intake, 650 eddy carbs did 712 at 6000. (although that was at 34 degrees, and it was consistently making 5 more hp for each 100 rpm at 32 degrees, so without documentation but a reasonable amount of surety i can say 717 ).

i'd like to know the cam specs too.

4.25 X 4.5? 7.1 inch rods? what is the CR?