pking75- from the other thread:

Originally Posted by heavy40chevy
The little tune ups make the biggest difference

I know you you have the pertronix, but a tune up solved heavy40chev's issue. It's a process of elimination sometimes. First off, try setting your timing to maximum vacuum as Tim suggested.

If you didn't move the timing, and it "runs fine" I'm a little confused why it won't accelerate properly...unless your vacuum advance has lost its vacuum- making it not advance the timing.

The vacuum advance is a mechanical operation and independent of the electronic upgrade. Keep posting updates- I hope you get it figured out!

Brad

Wrench Fetcher, PhD