The firing order is right, it runs great with the vac hooked up.
The popping was only when I didn't have the vac hooked up.
(#1 is driver side front right)

Just so I know what I'm looking for, is it likely that my balancer is telling me I'm more advanced than I really am?
So when it was running good with vac hooked up reading 20 it was probably a lot less than 20? and when I unhooked it and it was popping like hell it was probably close to 0 or maybe even retarded a few degrees?

I'll have to get a piston stop and check this sucker.