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09-28-2003, 11:52 AM
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#1 |
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Registered User
Join Date: Jan 2003
Posts: 25
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Can you ID this rear-
The rear end in my 69 is starting to get noisy and clanky at take off. As I call around to get rebuild estimates how do I refer to it. Do I just call it a 12 bolt Chevy? Can this be built into a posi rear end? Or is there something else I could bolt in instead of rebuilding this one. I am also considering adding disc brakes while I'm at it.
Thanks in advance as I am totally ignorant when it comes to rear end work. Dennis |
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09-28-2003, 11:57 AM
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#2 |
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Registered User
Join Date: Nov 2002
Location: Bellevue, WA
Posts: 1,480
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Yes, that is just a corporate 12 bolt rear end. You can have a posi installed (what i'm doing). GMC Pauls sells a disc brake kit for this rearend.
12 bolts are known to be a very good rear end and I would definately have it rebuilt before going and getting another.
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Brian Pal 1971 Cheyenne 10 454/th400-Undergoing a full frame off resto. 1972 Chevy short/step 2wd, 350/th350 1983 M1009 CUCV Military K5 Blazer 1981 Dodge 1 ton 4x4 dually flatbed |
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09-28-2003, 12:37 PM
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#3 |
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Registered User
Join Date: Sep 2003
Location: calif. central valley
Posts: 175
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REAR ID
WHEN YOU TALK TO SOMEONE ABOUT REAR JUST TELL THEM YOU HAVE 8.875 12 BOLT TRUCK REAR END AND YES A POSI CAN BE INSTALLED I JUST GOT MINE ALL DONE BUT YOU NEED TO FIGURE OUT WHAT GEAR RATIO BECAUSE IT DICTIATAES WHAT CARRIER FOR POSI SERIES 3 OR 4 I THINK 4'S IS 3.73'S OR LOWER IE 4.11 OR 3 FOR ANYTHING HIGHER THAN 3.73 IE 3.08'S HOPE THIS HELPS ALSO KEEP IN MIND AUBURN POSIS ARE NOT REBUILDIBLE EATONS ARE AT LEAST THATS MY UNDERSTANDING ABOUT +/- BETWEEN THE 2
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09-28-2003, 12:49 PM
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#4 |
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Registered User
 
Join Date: Nov 2002
Location: Mt. Vernon, WA..
Posts: 2,324
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Isn't there a series of letters /numbers stamped on the top right side of those rearends to tell what they are? Should say something like HM,MH--3.36 POSI,HC,TU,HN,MJ---3.73 POSI, JQ,TV,HO,HP,MK,MI--4.11 POSI......
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09-28-2003, 01:34 PM
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#5 |
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1FINE69
Join Date: Aug 2003
Location: Detroit, Michigan
Posts: 239
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Rear end
Good luck withit. I just dropped $900 to get my 69s 3.07 12 bolt redone this spring. Was toying with going posi but decided since its a daily driver in snowy conditions its wasn't worth adding another $400-500 to get a little more traction. JM.02s
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Had a 69 swb fleetside 350zz3 w 400turbo trans oak lined bed with rhino coated sides red exterior. SOLD |
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