| |
Click on image for the lowdown. 
====
| | |
1 members (Shardean),
113
guests, and
1
robot. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,030 Posts1,055,428 Members48,422 | | 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: Feb 2006 Posts: 222 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 222 | I found out that some of the HEI distributors use the vacuum assembly to slightly retard the timing when the vacuum falls. This is designed to some how enhance power when the vacuum falls. I don't understand it, just read it!
| | |
|
|
| |
