Well, it's my turn to ask for suggestions..

mderoy340 said

With 170 crank compression I'll assume cam lobes and cam timing are good. Get the initial timing bumped up to at least 16, 18 and more if the motor responds. Do the normal initial timing set with max vacuum at idle followed by heat soak to check starter kickback.
Recurve dizzy then screw with a fuel curve.
What is your vacuum at idle?

Click to expand...

This is a very good point. OP mentioned total timing, WHAT is initial? If you have a smog (stock) distirbutor, it could be very little

EDIT OP said 13. It should be more, but it should not be a complete dog. Regardless.......try the above and get more initial timing into it to see if bottom / midrange is improved.

I'm BIG on piston stops and checking timing marks. This comes from years ago, finding a few that moved.