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Old 03-18-2003, 04:37 PM   #1
firemanchuck
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How To Identify My Axles

HEY CHEVY BROTHERS,

JUST CURIOUS HOW I CAN IDENTIFY MY AXLES ON MY BABY.
THE GLOVE BOX DOOR IS TELLING ME 3:73 WILL THAT BE FRONT AND BACK, IS THERE A STAMP SOMEWHERE ON THE AXLE'S THAT WILL CLEAR THIS UP FOR ME. I JUST WANT TO MAKE SURE SHE HAS THE ORIGINAL AXLES. JUST NEED TO KNOW WHERE TO LOOK.
THANKS FELLERS.

FIREMANCHUCK, TULSA, OK

1972 4X4 FLEETSIDE SWB 350 SMC 4-SPEED
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Old 03-18-2003, 05:07 PM   #2
landon4421
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I know if you take the covers off there are #'s on the ring gear, if you post those #'s someone will be able to help you. That's the way I have always checked them.

Welcome to the board, Landon
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Old 03-18-2003, 06:00 PM   #3
Blue Beard
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Generally, there would be a code on the axle housing. About 6" out from the main housing..............
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Old 03-18-2003, 06:05 PM   #4
Yukon Jack
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The front axle should be a Dana 44 and will have D44 stamped in the webbing on one side of the differential. Not positive of markings on the rear axle. It is not uncommon to find a slightly different gear ratio in the front axle than the rear axle, usually just off by .01.
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Old 03-18-2003, 06:51 PM   #5
1972chevy4x4
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If they are 3.73 gears there will be a 41:11 stamped on the gear inside of the pan. I would go ahead and pull pan to check, being a 30 year old truck probably could use some new oil.
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Old 03-18-2003, 07:43 PM   #6
HeavyK20
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That's 41 teeth on the ring and 11 teeth on the pinion. 41/11=3.727272 or 3.73 Just had to throgh that out there because its the one thing in the world that I know.
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Old 03-19-2003, 06:01 AM   #7
JIMs70GMC
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If they are stock they should be a Dana/Spicer 44 up front and a GM 12 bolt in the rear.
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs
1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX
1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears
1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now.....
1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone.
1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed.

1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm
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