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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 2013 Posts: 14 New Guy | | New Guy Joined: Sep 2013 Posts: 14 | Looking for recommendations to replace the rear axle in my 1949 3600 (4 speed with 4.57 rear). Looking for a rear that is most compatible in terms of dimensions, has a high enough gear ratio for highway driving, and ends up giving me either a 5 or 6 lug bolt pattern. Thanks, Charlie | | | | | Joined: Dec 2001 Posts: 1,248 'Bolter | | 'Bolter Joined: Dec 2001 Posts: 1,248 | Seems I've read where you can swap the center section out with a newer one and have 4:10 ratio. The original housing stays then.
Not sure about getting 5 or 6 bolt pattern though. You'd probably have to go down to a 1/2 ton style differential then.
John | | |
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