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09-15-2010, 03:58 PM
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#1 |
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Registered User
Join Date: Apr 2009
Location: medford, OR
Posts: 80
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difference between 67 & 77 12 bolt rearend
I have a 77 chevy 12 bolt rearend with 373 gears. But my parts truck for rear trailing arm suspension is a 67 chevy 12 bolt with 411 gears. What Im wondering is if the gears will interchange? Id like to use the 411 in the 77 rearend. Any other differences like width or axles? Thanks in advance!
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09-15-2010, 03:59 PM
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#2 |
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Under Construction
Join Date: Oct 2007
Location: Midlothian,TX (DFW)
Posts: 4,555
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Re: difference between 67 & 77 12 bolt rearend
IIRC the '67 is about 1 1/2 " narrower . not sure if the pumpkin etc. with interchange, im sure someone else will chime in...
__________________
Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470 Last edited by my67chevytruck; 09-15-2010 at 04:00 PM. |
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09-15-2010, 04:03 PM
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#3 |
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Registered User
Join Date: Apr 2009
Location: medford, OR
Posts: 80
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Re: difference between 67 & 77 12 bolt rearend
thanks, the 67 is a 6 lug rearend. So idk if the 77 axles could be shortened a little and fit in the 67 housing to get the 5 lug pattern? Just trying to figure out which way to go.
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09-15-2010, 07:22 PM
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#4 |
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Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: difference between 67 & 77 12 bolt rearend
The gears and differential case will swap, but not the shafts. I don't think the shafts have enough spline length to allow them to be shortened. You could pull a shaft from each and compare them.
Ray |
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09-16-2010, 03:02 AM
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#5 |
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Registered User
Join Date: Apr 2009
Location: medford, OR
Posts: 80
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Re: difference between 67 & 77 12 bolt rearend
Thanks for the info Ray..........Anybody else?
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09-16-2010, 09:57 AM
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#6 |
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Registered User
 
Join Date: May 2007
Location: Rapid City South Dakota
Posts: 2,359
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Re: difference between 67 & 77 12 bolt rearend
Innerds will swap. axles are the same spline. Just keep the shafts with the housings they came from.
__________________
Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299 |
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