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Click on image for the lowdown. 
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| | | Forums66 Topics128,014 Posts1,055,328 Members48,419 | | 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: Oct 2005 Posts: 83 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2005 Posts: 83 | My 64 has stock rear gears. The differential doesn't have its tag or anything so I'm not sure how to tell what the gears are. Help? I'm putting a saginaw 4speed in this rig. How will this get along with the stock rear end? | | | | | Joined: Jul 2005 Posts: 1,158 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 1,158 | It should say on the ring gear what the ratio is.
At least, that's what I'm told.
If you don't want to screw around with the rear end, you can jack the back up and spin the wheels and count how many times the driveshaft turns vs how many times the wheels turn. That'll give you your ratio, too.
The Transmission should play nice with the differential. | | | | | Joined: Oct 2005 Posts: 83 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2005 Posts: 83 | Cool, I never thought of that driveshaft-to-wheel turn ratio. Thank God for a few good truck enthusiasts. Thanks!!! Bluto | | | | | Joined: Mar 2005 Posts: 1,029 Member | | Member Joined: Mar 2005 Posts: 1,029 | With one wheel jacked up, count the number of driveshaft revolutions per two revolutions of the wheel for the ratio. | | |
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