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Click on image for the lowdown. 
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Global Mod,
Mod | | | Forums66 Topics128,128 Posts1,056,661 Members48,450 | | 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!
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| | | | Joined: Sep 2012 Posts: 45 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2012 Posts: 45 | I found this online someplace, not sure if it is 100% accurate.
Three ratios were available through those years:
4.11 with an overdrive transmission
3.90 with a standard transmission
3.38 with an automatic transmission. | | | |
Entire Thread
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1961 GMC 1000, rear differential
| Mike_K | 09/20/2012 9:55 AM | |
Re: 1961 GMC 1000, rear differential
| Mike_K | 09/20/2012 10:46 AM | |
Re: 1961 GMC 1000, rear differential
| Mike_K | 09/20/2012 10:47 AM | |
Re: 1961 GMC 1000, rear differential
| Mike_K | 09/20/2012 10:48 AM | |
Re: 1961 GMC 1000, rear differential
| Modelman | 09/24/2012 9:15 PM | |
Re: 1961 GMC 1000, rear differential
| Mike_K | 09/25/2012 9:18 AM | |
Re: 1961 GMC 1000, rear differential
| Modelman | 09/25/2012 7:56 PM | |
Re: 1961 GMC 1000, rear differential
| 4-5-6 Chevy Trucks | 09/26/2012 9:39 PM | |
Re: 1961 GMC 1000, rear differential
| BC59 | 09/26/2012 2:33 AM | |
Re: 1961 GMC 1000, rear differential
| Mike_K | 09/26/2012 9:53 AM | |
Re: 1961 GMC 1000, rear differential
| BC59 | 09/26/2012 12:40 PM | |
Re: 1961 GMC 1000, rear differential
| Mike_K | 09/26/2012 2:21 PM | |
Re: 1961 GMC 1000, rear differential
| BC59 | 09/26/2012 4:13 PM | |
Re: 1961 GMC 1000, rear differential
| Mike_K | 09/26/2012 10:22 PM | |
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