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Click on image for the lowdown. 
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| | | Forums66 Topics128,077 Posts1,056,280 Members48,441 | | 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: Jan 2017 Posts: 308 'Bolter | | 'Bolter Joined: Jan 2017 Posts: 308 | Can anyone point me to a GM source listing vehicles with 6 LUG 373 rear end. IE 78 Camaro 66 1/2 ton etc--Thanks Bill | | | | | Joined: Sep 2010 Posts: 2,318 'Bolter | | 'Bolter Joined: Sep 2010 Posts: 2,318 | My 72 gmc had 3/73 ratio ,I also had a 69 gmc same setup only six bolt both trucks had the six the 69 was a posi rear axle also | | | | | Joined: Sep 2011 Posts: 1,456 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 1,456 | Pretty common in 1/2 t '63 & later.
BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
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