Consider doing a 400 with aftermarket pistons (valve reliefs!) like KB and 75cc aluminum heads. I think Edelbrock E-Streets are available in 84 or 75cc out of the box or you can easily mill 84's to 75cc.
Yes, I’ve got eddy performer rpms to go on either engine. Also have Manley 6.76 440 rods for either engine. 400’s gotta have new pistons regardless. Thinkin, Ross forged .990 pin.
