[w72]

Wondering if a box-stock 850cfm double pumper would be close enough to fire a fresh mill. I plan to use a Sniper EFI unit with timing control, but am hesitant to crank over a new (expensive) powerplant with so many variables.

I have a suitable factory HEI sitting around, and all I would need to do on the fuel side is change the regulator. The only purpose of this would be to ensure a reliable break-in period for a HFT cam, and also as a backup should the Sniper experience a failure.

Engine specs are 400 .060" over, 4.25" stroke. Flat tops, zero-decked, ported iron heads with 95cc chambers. So 467ci, just a tick over 9.5:1, and an 041 cam with Rhoads lifters and 1.65:1 rockers.

Would any changes need to be made to the carb? I'm comfortable working on Holleys, and feel free to start a new thread to fight over the cam choice Thanks for any input.