Mopar purple .528 for a 383?

Im very hopeful that the compression is decent, it’s got at the other HP goodies. I think your thought process is solid, advancing the cam might help if the compression is lower than ideal. Should work pretty well otherwise.

I’m looking forward to the first WOT 2-3rd powershift. Should be a hoot.
No doubt about it. The 383 IMO gets a bad rap like the 318. But both can haul the mail.