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7 members (NJC, baldeagle, Gray_Ghost, Peggy M, Wickedbass, Charles in CA, cmayna),
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Global Mod,
Mod | | | Forums66 Topics128,018 Posts1,055,342 Members48,419 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Aug 2011 Posts: 226 'Bolter | | 'Bolter Joined: Aug 2011 Posts: 226 | I installed the Petronix and am still having advancing or not enough advancing occurring on full acceleration. Talked to Petronix as they thought I could have purchased one of three available for our trucks a couple of years ago. They thought if I had an old unit, it could be indexed wrong.
I have the correct unit for my 228 GMC, so I am still working on getting my advance back.
Any advice? | | |
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