| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,076 Posts1,055,925 Members48,430 | | 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: Sep 2005 Posts: 1,028 'Bolter | | 'Bolter Joined: Sep 2005 Posts: 1,028 | The needle shaking on the vacuum gauge seems better. I advanced the timing slightly and get a reading of 21 on the guage.
The gauge reading drops rapidly on quick acceleration but recovers to 21 then rises to 25 or so on deceleration then stabilizes again at 21. I assume this is normal as it makes sense.
any thoughts on vacuum readings?
| | |
|
|
| |
