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Click on image for the lowdown. 
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| | | Forums66 Topics128,048 Posts1,055,664 Members48,426 | | 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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#77114 05/04/2007 3:53 AM | Joined: Jul 2006 Posts: 187 Shop Shark | | Shop Shark Joined: Jul 2006 Posts: 187 | Have mine set at 12 deg BTDC. It's in my '63 C20 and came out of a '72 Blazer. Am about to put on higher compression heads, so I'm sure I'll play with it a little more after the heads are installed. | | |
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