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Click on image for the lowdown. 
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| | | Forums66 Topics128,084 Posts1,056,087 Members48,434 | | 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
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | I just read another thread that states you have a cummins and a 5 speed(NV4500?) 65mph looks like about 1612 rpm. The diesel should be able to pull that on the flat.
I don't have much experience with larger rear ends, but I remeber the 1 ton dodge diesel I got my NV4500 out of had an 8 lug 3.55 dually rear. Perhaps you can make an 8 to 5 adapter.
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