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08-06-2007, 01:44 PM
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#1 |
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Registered User
Join Date: Mar 2007
Location: hawk point, missouri
Posts: 42
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12 bolt Mystery Marks
I pulled the differential cover off today
and saw this. what could have caused this? I was thinking about adding posi so is this a big deal?
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1969 Chevy 1/2 ton 4x4 1972 Chevy K20 1953 Chevrolet 6400 |
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08-06-2007, 02:05 PM
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#2 |
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Registered User
 
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
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Re: 12 bolt Mystery Marks
looks like the pinion slid into the carrier and chewed it up. this would have granaded the ring/pinion and side gears but the housing survived and they just reused the carrier. seen something similar to this before when a buddy jumped his truck and was running a solid drive shaft. once the suspension bottomed out something had to give. it wasn't pretty.
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Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's |
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08-06-2007, 03:33 PM
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#3 |
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Registered User
Join Date: Oct 2006
Location: Oakridge Oregon
Posts: 1,864
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Re: 12 bolt Mystery Marks
Humm looks like a big deal!
It doesnt look like a stock carrier with the ribs on the end.
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68 CST SWB - Gold/White 50th anniversary /TH350/Buddy Buckets/3.73 Posi/dogdish caps. 68 K10 Burb - Gold/White 327/SM465/NP205/3.73 "Daa Burb" build thread |
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08-06-2007, 10:14 PM
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#4 |
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Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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Re: 12 bolt Mystery Marks
I had the pinion nut come undone on my Suburban, but it got me 60 miles, noisily, to the house. The carrier had a similarly customized look to it when I yanked the cover.
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08-06-2007, 11:35 PM
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#5 |
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Registered User
Join Date: Mar 2007
Location: hawk point, missouri
Posts: 42
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Re: 12 bolt Mystery Marks
if the ring gear grenaded
would there be marks or dents inside the housing?
__________________
1969 Chevy 1/2 ton 4x4 1972 Chevy K20 1953 Chevrolet 6400 |
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08-07-2007, 02:02 AM
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#6 |
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Registered User
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
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Re: 12 bolt Mystery Marks
most likely, especially the cover. they dont crumble softly when they come apart.
__________________
Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's |
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