MSD Disappointment ??

512Stroker said
You could be right
But I would still add more initial timing (2 degrees at at time) until he finds the sweet spot.
I have never run an engine at 8 degrees initial.
I would try it and see what happens.
OP - where is your battery located?
What size cable did you use?
Is the negative grounded on the block?

I agree 100%. I am simply saying he should keep it in mind as he's advancing initial if he decides to try it. That's a lot invested to risk damage with spark knock.