planning a 350 rebuild focusing on bottom end tq.

[iwaxmyjimmy]

I don't think the resistance to rotation is nearly as big a difference as is how fast you can close and open the valves, and how long you can keep them open, without running into a bunch of overlap.

I wouldn't be surprised if some magazine has done a roller vs. flat comparison, but you'd have to find cams with identical specs, and being able to open the valves "better", not much point to making identical grinds.

Yeah I know what you mean. Its like having the best ECM in the world... And still using batch fire instead of sequential fuel injection lol and a vacuum advance distributor lol.