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Click on image for the lowdown. 
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8 members (Woodcmiami, Hotrod Lincoln, klhansen, DadsFirstPickup, Otto Skorzeny, MickeyP, Wayne67vert, 1 invisible),
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Global Mod,
Mod | | | Forums66 Topics128,043 Posts1,055,605 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!
| | 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: Aug 2012 Posts: 1,214 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 1,214 | There was a good article in the Fall 2017 Hagerty magazine I got re. 2 Napco Stovenbolts, a 59 1/2 ton and I believe a 51 3/4 ton. It gave a limited history on the Napco conversions and it claimed they were bolt in mod's and could be removed and the stock parts reinstalled. As Carl said the gears ratio's in the front and back need to match.
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