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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Rear Drivelines, Drive Axles and Gearing => Topic started by: Laderhosen on September 26, 2010, 06:01:08 PM

Title: Crown wheel numbers
Post by: Laderhosen on September 26, 2010, 06:01:08 PM

I have these numbers on the crown wheel in my Blazer rear axle

2 gm 26015037 13 40 12 91

I've been told the following refers:

2 gm 26015037 = part number

13 = number of teeth on the pinion

40 = number of teeth on the crown wheel

12 = month of manufacture

91 = year of manufacture.



How right is that info??

Thanks

Title: Re: Crown wheel numbers
Post by: Blazin on September 26, 2010, 09:22:26 PM

Not sure on the others, but 40 divided by 13 = 3.07 which is a common half ton gear.