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Click on image for the lowdown. 
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| | | Forums66 Topics128,035 Posts1,055,570 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
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jan 2010 Posts: 68 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2010 Posts: 68 | Hi all a quick question about diff ratios. I am not sure what ratio my 42 1 1/2 ton chev truck has. It has a 4 speed manual trans, would a 2 speed diff help I would like to get a little more highway speed. Cheers Justin | | | | | Joined: May 2018 Posts: 51 Wrench Fetcher | | Wrench Fetcher Joined: May 2018 Posts: 51 | No. 2 speeds axle is only slower in low. You won't get there any faster. If you can get bigger tires like 825-20 might be the easiest option to gain a little.
J. F.
| | | | | Joined: Jan 2010 Posts: 68 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2010 Posts: 68 | | | | | | Joined: Nov 2000 Posts: 1,966 'Bolter | | 'Bolter Joined: Nov 2000 Posts: 1,966 |
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