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Mod | | | Forums66 Topics128,014 Posts1,055,327 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!
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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: Dec 2006 Posts: 1,154 Shop Shark | | Shop Shark Joined: Dec 2006 Posts: 1,154 | YEP....Disconnect the vacuum line and plug it with a golf tee. Two marks on fly-wheel triangles and BB's very small BB's the triangles are for valve events( I was told). Far left of the window is advanced. How much advanced only the old pros can tell you and each circumstance is relative. | | |
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