Some help with a 400

My machinist says that the old Mopar steel cranks are hard just about all the way though, not sure about the cast stuff. So offset grind or grind a 440 crank to fit in your 400 all you want....

On the dyno my 383 makes 400 HP @5200 and 436 ft/lbs of torque @4300 with over 400 ft/lbs from 3000-5200 with a modest 264/272, 217/225 @ .050 with .544 lift custom hydraulic roller with 1.6 rockers and basically stock 906 heads.

So with the cam you have chosen, with the Eddy heads should really make some good HP and torque. I'd say 450 HP and 485 ft/lbs torque. Stroke it to 451 and you would have even more.

Garth