![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
MEMBER OF THE JUNK MAN CLUB
Join Date: Jul 2001
Location: paragould arkansas 72450
Posts: 425
|
for sale 1970 3.73 posi rearend.
coil spring 6 lugger i have pulled the cover it could use cleaned up and new brakes in n.e arkansas 72450/ $275.00
![]() |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Aug 2002
Location: Waxahachie TX
Posts: 773
|
posi
can you tell me if all the seals are ok and would my 5 lug axles fit it in that i have a 68 with a 72 3:08 gear rear end but been lookin for a 73 posi but i have 5 lug i can drive to you to pick up and my rear will cost me 800 for new posi and gear...Steve
|
![]() |
![]() |
![]() |
#3 |
MEMBER OF THE JUNK MAN CLUB
Join Date: Jul 2001
Location: paragould arkansas 72450
Posts: 425
|
i dont know if ya can change them or not someone around here prolly knows, it does need new seals/later dude!
![]() |
![]() |
![]() |
![]() |
#4 |
Large Member
![]() Join Date: Jun 2002
Location: Northwest Arkansas
Posts: 747
|
Here is what I know.. Gm truck 12 bolt rearends can all use either 5 lug or 6 lug rear ends. However, 2.73 - 3.42 gear ratios compared to 3.73 - 4.56 ( maybe just 3.73 - 4.10 ) use a different carrier. Hope this helps.
|
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Aug 2002
Location: Waxahachie TX
Posts: 773
|
axles
yeah but would the axles be the same? i dont see why not and 468 you still have the rear end? maybe willing to meet a little closer to me im in Houston
|
![]() |
![]() |
![]() |
#6 |
Careful, they attack...
Join Date: Aug 2001
Location: Waterford, MI, USA
Posts: 1,107
|
The 67-69 axles are a different width than the 70-72 axles. Your 5 lug axles will fit in the 70 housing cuz that was the only year they made the wider housing with the 6 lug axles. It makes no difference what gears are in it, they will slide right in. If you want to change the gears, you can use any 12 bolt truck carrier with the CORRECT ring and pinion. 3.73 and up use the 4 series carrier, while 3.08 will use the 3 series carrier. If it's a 70 axle, it most likely has 3.73 gears. If you decide to swap gears and carriers, have it done professionally. If set up wrong, you WILL destroy your gears, carrier, and housing. Rear gears are not something to cheap out on, anda it's not just a simple bolt in swap.
|
![]() |
![]() |
![]() |
#7 | |
Keepin an eye out
Join Date: Feb 2003
Location: So.Cal
Posts: 3,921
|
Quote:
|
|
![]() |
![]() |
![]() |
#8 |
Careful, they attack...
Join Date: Aug 2001
Location: Waterford, MI, USA
Posts: 1,107
|
might be, I have heard that all 70 axles were the wider ones. You can measure to see what you have. Measure the housing on a 67-69 from flange to flange, then have someone measure a 70 housing from flange to flange. Just to be sure.
|
![]() |
![]() |
![]() |
#9 |
Senior Moment
![]() Join Date: Mar 2002
Location: Pittsburg Ca
Posts: 4,129
|
My 70 was originally 6 lug. I bought a 71 5 lug parts truck and the axels matched perfectly
__________________
1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565 |
![]() |
![]() |
![]() |
#10 |
Large Member
![]() Join Date: Jun 2002
Location: Northwest Arkansas
Posts: 747
|
In my lmc catalog, the part number for a 70 year model 1/2 2wd axle is the same part number as the 4x4 pickup and blazers.. sounds like 70 - until they stopped making 12bolts
![]() |
![]() |
![]() |
![]() |
#11 |
MEMBER OF THE JUNK MAN CLUB
Join Date: Jul 2001
Location: paragould arkansas 72450
Posts: 425
|
i can measure this one and see if its the same.
|
![]() |
![]() |
![]() |
#12 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
|
![]()
I would suggest measuring the 70 rear end as some had longer axles and some has the shorter axles. The longer axle rear ends are 67 1/2" between the backing plates, approximately.
Jim |
![]() |
![]() |
![]() |
Bookmarks |
|
|