Very mild 318 - Comp 252H vs 340 cam?

Back a few years ago I used that comp simulation calculator and found the XE 256 did not give up any low end to the 252 but had a broader and higher peak.

It also had a WAY broader peak than the next one up- the 262, and only gave up 10 HP to that narrow 262 peak.

I'm dying for someone to try that 256 in a mostly otherwise unmodified setup with real world car and drive train specs.

I have one on the shelf but it's a way back burner project.

...although I think a well documented (as per the OP) 252 install would be a great shot in the arm for the sorely needed "one step up" 318 cam community.

I'd bet the comp HE and XE grinds are much more "modern" than the factory 40-50 year old Chrysler grinds.