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Click on image for the lowdown. 
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13 members (Otto Skorzeny, Gdads51, TUTS 59, Jon G, Joe H, HandyAndy, greenie-reddy, Simso, 1955 1 Series, Southerntruck, Gib70, 3B, 1 invisible),
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Global Mod,
Mod | | | Forums66 Topics128,103 Posts1,056,183 Members48,436 | | 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: Mar 2003 Posts: 315 'Bolter | | 'Bolter Joined: Mar 2003 Posts: 315 | From the Thompson tuneup manual that I have It has for the first series engines .006 to intake and .013 for exhaust hot, second series engines, after serial number 228-87569, the settings are .012 for both intake and exhaust hot. | | |
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