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Mod | | | Forums66 Topics128,038 Posts1,055,536 Members48,425 | | 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!
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#32718 02/14/2004 6:08 PM | Joined: Sep 2003 Posts: 343 Member | | Member Joined: Sep 2003 Posts: 343 | I think Joe H's Dad has the correct answer to this problem, since I installed a 4 degree offset key and ended up with about twice the advance that I was after. Therefore if I replace the 4 degree key with a 2 degree key I will now have the the cam timing advanced by 4 degrees.
1954 GMC 1/2-ton Longbed
1971 Pontiac LeMans Sport
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