My 340 build

Oooh, nice! I've got one of them and a set of lifters sitting on the bench waiting for the snow to fly. Hoping that will make good match with ProMaxx 171 heads, RPM AG, and 650 AVS2. Will be very interested in your reasoning and results.
Well i feel the lift will work perfect with my eddy heads especially if i do a light port job.
Also the cam i feel would be perfect woth my compression ratio ill have i hope, might have to upgrade torque converter but we will see. I almost have same setup as you just carb different and heads as for top end