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82 axles

  #1  
Old 04-26-2010, 10:37 PM
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Default 82 axles

I have an 82 k5. I recently bought this truck and swapped the 305 for a nicely biult 454 with an automatic. I then installed a 4 inch suspension and 3 inch body lift and installed 37 inch boggers. When I welded the rear spider gears I found out it had 3.08 gears. I want to go to a 4.10 or 4.56 gears but I'm having some trouble finding out what differentials I have. One website told me it has a corp 10 bolt in front and dana 44 rear but I dont know for sure if it was accurate or not. They are the original diffs. to that truck but I need to know for sure before I order gears. Any info would be great.
 
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Old 04-26-2010, 11:33 PM
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Rear Axle: GM Corporate 10-bolt (8.5-in. 1.28 Axle Dia. 28 Spline)


Front Axle:
GM Corporate 10-bolt (8.5-in. 1.28 Axle Dia. 28 Spline)


i never seen a dana rear in these trucks. they put a dana 44 up in the front up untill like 79
 
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Old 04-27-2010, 06:31 AM
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Do you intend on offroading your truck? If you do, I don't know if I would do anything with your current axles but toss them and get some 1-tons (well a 3/4 ton 14BFF for the rear and a 1-ton D60 for the front).
 
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Old 04-27-2010, 10:13 PM
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ha yeah a 454 with those axles and boggers... you can make them last if you really behave. i ran 38 tsl's with 10 bolts for years but knew what i was dealing with and behaved.

just look on the bright side youll get really good at changing out ball joints and bearings
 
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Old 04-28-2010, 09:59 PM
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Originally Posted by swartlkk View Post
Do you intend on offroading your truck? If you do, I don't know if I would do anything with your current axles but toss them and get some 1-tons (well a 3/4 ton 14BFF for the rear and a 1-ton D60 for the front).
I do intend on mudding and the occasional mud bog contest I planned on 1 ton axles from the beginning but I'm not doing anything until I destroy these first. I had intended on using a set of 44 inch tractor tires that I got but realized real quick that wasnt happening.

Originally Posted by abig84 View Post
ha yeah a 454 with those axles and boggers... you can make them last if you really behave. i ran 38 tsl's with 10 bolts for years but knew what i was dealing with and behaved.

just look on the bright side youll get really good at changing out ball joints and bearings
I biult my buddies 89 blazer's motor and the only difference between ours is his is a small block with granny 4-speed and mines a big block with an automatic. Same lift, tires, etc. We have put his through hell and no problems so far. I personally have dumped the clutch in his so many times in place I shouldnt have it has held so I figure my automatic should at least be little easier on the axles. The tranny for mine is being repaired as we speak and I'm having them biuld my torque converterto give me about 22-2400 stall. I dont know if that will help or hurt but it should let my engine run a little more effectively. I'd post a pic but I heavnt figured out how yet. I know some other forums make you wait to like 10 post so maybe I can a little later
 
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Old 04-29-2010, 06:22 AM
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Originally Posted by a57chevy43 View Post
I do intend on mudding and the occasional mud bog contest I planned on 1 ton axles from the beginning but I'm not doing anything until I destroy these first. I had intended on using a set of 44 inch tractor tires that I got but realized real quick that wasnt happening.
Mudding won't be as hard on the axles as rock crawling is unless you start bouncing around a lot. You typically do not crawl around with really low gear reductions for mud bogs. You want wheel speed.

Originally Posted by a57chevy43 View Post
I'd post a pic but I heavnt figured out how yet. I know some other forums make you wait to like 10 post so maybe I can a little later
You have to click the 'go advanced' button and scroll down to the Attach Files section.
 
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Old 04-29-2010, 07:22 PM
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thats why i think i never broke mine. i did strictly mud and had 373 gears in them. only time i ever broke a front axle shaft was punching it in 4low on gravel
 
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Old 04-29-2010, 09:34 PM
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Wheel speed is one of the reasons I was thinking lower gears. In a mud bog it starts off as a drag. Getting 3.08 gears turning even with a 454 takes a little time especially with a stock 1500 stall speed converter. After I get my tranny and new converter back and try it out I'll see if it need gears or not. Hopefully this weekend. With the cam i'm running the engine really dont come alive till around 3000 rpms. Over that and the torque has no problems spinning the 37's

before and after
 
Attached Thumbnails 82 axles-011.jpg   82 axles-mud-nats-2010-023.jpg  

Last edited by swartlkk; 04-30-2010 at 06:22 AM. Reason: **Combining Consective Posts** - Please use the EDIT feature to add information to your post if another member has yet to reply.
  #9  
Old 05-03-2010, 10:57 PM
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I no now know that they are corp. 10 bolts. Thanks guys. What size is the ring gear cause I want togo ahead and order new gears and I dont want to pull the cover off and measure. Is it the 8.2 or 8.5
 
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Old 05-03-2010, 11:02 PM
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Originally Posted by a57chevy43 View Post
I no now know that they are corp. 10 bolts. Thanks guys. What size is the ring gear cause I want togo ahead and order new gears and I dont want to pull the cover off and measure. Is it the 8.2 or 8.5
Answered for you already above... Quoted for reference:
Originally Posted by abig84 View Post
Rear Axle: GM Corporate 10-bolt (8.5-in. 1.28 Axle Dia. 28 Spline)


Front Axle:
GM Corporate 10-bolt (8.5-in. 1.28 Axle Dia. 28 Spline)
 

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