73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: muddjar on May 10, 2012, 12:56:30 pm
-
This is my 81 short wide I am in search of a new rearend and was wandering if I could upgrade to a newer style if any would fit. Its a 10 bolt I looked in rearend and the only staped numbers I seen were 89 b and 8370 so how to tell what gears I have thanks
-
What's wrong with the 10-bolt? Is it broken? These aren't bad axles. However a 12-bolt from this era of truck shoult be a direct swap and will provide a little extra strength.
Since you already have the diff cover off you can determine the ratio by dividing the number of teeth on the pinion into the number of teeth on the ring gear. Ex.: Say there are 10 teeth on the pinion and 41 on the ring gear, you would have a 4.10:1 ratio, etc. Sometimes the ratio is stamped on the ring gear itself but based on your post it appears that it wasn't.
-
Thanks dusty I Jacked her up and rotated the wheel and she has 273. So I went to a junkyard today and found a 12 bolt but it is in a diesel truck so does that matter just wandering
-
Motor doesn't matter as far as rear axle goes. Pull the cover off and check the ratio the way Dusty said. Or if it has numbers stamped in the edge of the ring gear its usually the last two numbers separated by a : divide the smaller number into the larger one.
You will need a cross over U joint. one side fits your drive shaft, the other fits the 12 bolt yoke. 12 bolts uses a little bit shorter cross, and smaller caps than a 10 bolt.
What is wrong with your current rear axle?
-
It has a lot of slack. U no I 'spin the wheel and it takes awhile to start to move and the person I bought it from ran it with out fluid
-
? U no? U joint?
-
I think he ment "you know"
-
Just wandering if I could use the chunk out of a 4 wheel drive in mine I was told as long as it is a 10 bolt. Is that right please help
-
4 wheel drive axle is the same. Just need to swap your backing plates, and brakes onto it. Slide you axles in, put your drums, and wheels on.
-
Or see how much a local shop can fix yours for if you can not, or do not want to fix it.
-
Someone said that my rearend was a 28 spline but I can't find a 28 spline for a Chevy so what do I do. How can I order the ring & pinion if it don't show that they have it
-
No offense but you don't sound ready to tackle a ring and pinion swap on your own. Find a 73-87 C series 5 lug axle with the ratio you want and swap it in.
-
(http://www.naioa.com/v2/modules/Forums/images/smiles/iamwithstupid.gif)
-
I agree with Vile.
-
I have looked for one they all have the same gears in them. Do I get a 30 spline will it work or will I have to change axles
-
splines dont matter with a axle swap
-
splines dont matter with a axle swap
As long as you swap out the whole axle, the only thing that could be different, that you would need to check is the yolk that the drive line hooks up too. (the one coming out of the front of the pumpkin on the rear end, as long as it is the same class of truck as yours, ex. 1/2 or 3/4 or so on).
-
I was told that I could use a 4 wheel drive rearend and find some some 12 bolt axles and that would work but it as just more to it. They told me the ones to match up. Because I've got the 28 spline and the 4 wheel drive has 30 and the 4x4's r longer
-
que? all 73-87 are the same lenth. you can use a 4x4 rear axle. a 4x4 10 bolt is the same as a 4x2 10 bolt. its a direct swap the only thing
-
just thought of it 4x2 are 5 lug while 4x4 1/2ton are 6
-
Where are you located? Where have you looked for a rear end?
-
I'm in central Arkansas. I'm going to hit some more junkyards and c what I can come up with. I ran the Vin though Chevy and it came up showing that my gears were 9 half ring with 342 gears at least that's what she started with
-
I'm in central Arkansas. I'm going to hit some more junkyards and c what I can come up with. I ran the Vin though Chevy and it came up showing that my gears were 9 half ring with 342 gears at least that's what she started with
Have you tried a local ring and pinion shop or the like to see how much they would charge for repair ? Might be cheaper and less hassle to get the one you have fixed.