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Rear axle question



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Old 11-11-2005, 10:04 PM   #1
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Rear axle question

I have a friend who just had the rear end go out in his 1990 k1500 4x4. I am trying to help him find a cheap replacement and was wondering what years he can look for and what are the donor vehicles (2wd and 4wd right?)

Since I am a Ford guy I need some information regarding this chevy. It is a 10 bolt rear axle correct? What are the most common gear ratio's for the 4x4? Does anyone have a replacement axle they are trying to get rid of or know of a cheap place to get one?

thanks for any help someone can give me on this subject and I would be glad to help out with the question goes to Ford's! hehehe
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Old 11-11-2005, 11:00 PM   #2
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yes, it's a 10 bolt. you need a 4WD rear axle. 80 and up should bolt right in, to be exact try to get as close as you can to the 90 model. only difference would be the parking brake cables.
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Old 11-11-2005, 11:30 PM   #3
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There is a slim chance it could also be a 14 blt SF. Be sure you get the correct gear ratio to match the front. There are some numbers stamped on the ring gear, one is the number of teeth on the ring gear and the other the pinion gear (there's also some other numbers, i think one is a part number and the other is a date). Take the bigger number and divide it by the small, this will give you the gear ratio. Ex: 41 and 11 would give you 3.73, 41 and 10 would be 4.10, etc.

Is the spring spacing the same between the 80s and 90s trucks?
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Old 11-12-2005, 06:19 AM   #4
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thanks for the input, I know it is not a 14blt so I was figuring it had to be a 10bolt. The biggest thing I was trying to find out is like you were asking are the spring perches the same through the year?
What about a blazer are they the same as the truck?
Are there any major changes through the years that I can only get an axle from so far back? (I mean in Sterling axles after '95 they had a tone ring so earliear axle swaps don't really bolt it...that sort of thing)
Any other information someone can give me, thanks?


BTW, anyone got a 10 bolt for this truck they want to get rid of?
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Old 11-12-2005, 06:53 AM   #5
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or rebuild the axle in the vehicle. what went out?
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Old 11-12-2005, 07:20 AM   #6
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lack or gear oil caused about 6 of the ring gear bolts to shear off, don't know how long it was driven like this (my bet not very far but any distance would have made it worse). So after a new ring and pinion ($150), set up kit ($50) and setting up of rear end ($250-400) it would be a lot easier and cheaper to find a replacement axle for the time being.
As I said just trying to help a friend out, I would personally find a 14 blts axle for the rear and spend the money on rebuilding it to handle the 39's that he has on the truck but that advice it falling on deaf ears.
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Old 11-12-2005, 08:49 AM   #7
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Quote:
Originally Posted by hojhauler
thanks for the input, I know it is not a 14blt so I was figuring it had to be a 10bolt. The biggest thing I was trying to find out is like you were asking are the spring perches the same through the year?
What about a blazer are they the same as the truck?
Are there any major changes through the years that I can only get an axle from so far back? (I mean in Sterling axles after '95 they had a tone ring so earliear axle swaps don't really bolt it...that sort of thing)
Any other information someone can give me, thanks?


BTW, anyone got a 10 bolt for this truck they want to get rid of?
All Blazers 73-91 should have the same spring perch width. Also Pickups, Surburbans and SRW four doors, but you ain't gonna find a 10 bolt in a 3\4 or 1 ton.

The axle needs to come from a 4WD cause the 2WD are 5 lug, the 4WD are 6 lug.

the only difference I know of are the location of the parking brake cables.

Also, like 4x4freak stated, gear ratio is important, needs to match the front.
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If you need a ladder to work on your rig you might want to re-think your suspension.
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thats the look a 14yo boy has the 1st time he sees his 1st set of boobies . its the simple pleasures in life
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Old 11-12-2005, 12:23 PM   #8
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yes, I understand about gear ratio totally I just did not know about the info specific to chevies...thanks for all the help I will pass it along
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Old 11-12-2005, 01:10 PM   #9
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I'm confused, is this a pickup or blazer? K1500 is a truck and a 90 model would be the new body style, but kenny keeps referring to a blazer.
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Old 11-12-2005, 01:12 PM   #10
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correct, a 1990 K1500 truck. I was trying to see if the blazer axles were interchangeable with the truck
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Old 11-12-2005, 05:16 PM   #11
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Ok, I thought it was a Blazer
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Quote:
Originally Posted by RVREDDOG View Post
If you need a ladder to work on your rig you might want to re-think your suspension.
Quote:
Originally Posted by bigevil View Post
thats the look a 14yo boy has the 1st time he sees his 1st set of boobies . its the simple pleasures in life
Quote:
Originally Posted by 4x4Freak View Post
Wood yoo lik two bi a voul? I have won four cell.
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