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02-16-2014, 03:08 PM
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#1 |
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Junior Member
 Join Date: Jan 2014
Location: ABQ, NM
Posts: 62
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What are these?
Found these items in a box in the back of the truck under a blanket.
The bottom right item has the following numbers stamped around the shaft: 3884936 1 69 14:43 GM The top right item has the following numbers stamped into the top of it: 168 3880042-12-37-GM The top left item is ~ 8" in diameter and the bottom left is ~9" in diameter. Any help would be appreciated. |
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02-16-2014, 03:22 PM
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#2 |
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I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: What are these?
They are ring and pinion gears for rear ends. The one stamped 14-43 is 3.07 gear ratio but I'm not sure what is it for.
The one stamped 3880042 and 12-37 is 3.08 gear ratio for a 8.2" Chevy car rearend. Like a Camaro or Chevelle.
__________________
'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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02-16-2014, 03:23 PM
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#3 |
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Registered User
Join Date: Jul 2011
Location: sutton WV
Posts: 1,822
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Re: What are these?
Ring gear and pinion gear. If someone else knows the number breakdown that should tell what there out of and the ratio.
__________________
Jason '70 C-10 short fleet 427BB TH400 (SOLD) '10 Ford F 350 '13 Ford RAPTOR 6.2 MY BUILD THREAD http://www.67-72chevytrucks.com/vboa...d.php?t=612623 |
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02-16-2014, 03:24 PM
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#4 |
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I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: What are these?
After a little searching, it seems the 3884936 gear is for a 71 - 72 12 bolt truck rearend, like your truck has.
http://www.gmpartswiki.com/getpage?pageid=22424
__________________
'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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