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Labor Day Putting down your wrenches or time for
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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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#29985 06/04/2003 1:49 PM | Joined: Jan 2003 Posts: 687 Shop Shark | | Shop Shark Joined: Jan 2003 Posts: 687 | Ok I've taken the back plate off my 59 wich is a 69 Grand prix donor rear end housing. The gears look brand new. It is a 10 bolt not posi traction, so what is the normal gear ratio for these things? I've counted the teeth divided the drive shaft gear and my figure just doesn't make sense! popcorn The Truth is Out There (HELP!!!) | | |
#29986 06/04/2003 2:11 PM | Joined: Jul 2000 Posts: 504 Member | | Member Joined: Jul 2000 Posts: 504 |
Bill M
53 GMC Hydra-Matic
Home Page
http://home.comcast.net/~bd97/index.html
When you argue with a fool, two fools are arguing..
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#29987 06/04/2003 4:56 PM | Joined: Jul 2000 Posts: 962 Shop Shark | | Shop Shark Joined: Jul 2000 Posts: 962 | Poncho rears had an axle code stamped into axle tube (usually driver side). clean the gunk off and get the code, it'll tell what car, ring gear dia, & ratio was stock for that rear.
Assuming its a 10 bolt from a '69 GP, its likely a 8.5" and could have any common ratio (depending on carrier) between 3.08 to 3.70.
good luck
chip
Preaching the Hot Rod Gospel according to the 4-stroke apostles:
Suck, Squish, Fire and Fumes
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#29988 06/04/2003 5:05 PM | Joined: Jan 2003 Posts: 687 Shop Shark | | Shop Shark Joined: Jan 2003 Posts: 687 | Ok!!! Thanks guys them maybe my figure of 3.55 is not to wild then. Appreciate the help!! popcorn
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