The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-21-2013, 11:01 PM   #1
squaretrucknut
Registered User
 
squaretrucknut's Avatar
 
Join Date: Aug 2012
Location: Chesapeake Va.
Posts: 7
71 to 70 Axle swap

Does anyone know if I can use 71 5 lug axles in my 6 lug 70 rearend ?
squaretrucknut is offline   Reply With Quote
Old 08-21-2013, 11:08 PM   #2
Maddoxdb
Registered User
 
Maddoxdb's Avatar
 
Join Date: Jun 2011
Location: Elk city ok
Posts: 891
Re: 71 to 70 Axle swap

The earlier rearends are a narrower width. The axles are not interchangeable. Swapping to 5 lug requires swapping entire rearend or buying conversion axles.
Posted via Mobile Device
Maddoxdb is offline   Reply With Quote
Old 08-22-2013, 12:18 AM   #3
leddzepp
Moderator
 
leddzepp's Avatar
 
Join Date: May 2007
Location: Southern Cal
Posts: 19,995
Re: 71 to 70 Axle swap

70 could had either the narrow or the wide housing...measure your housing, as you may have the wider one. Welcome to the message board!
Posted via Mobile Device
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed.

1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck.


RIP ElJay
RIP 67ChevyRedneck
RIP Grumpy Old Man
leddzepp is offline   Reply With Quote
Old 08-22-2013, 08:16 AM   #4
Maddoxdb
Registered User
 
Maddoxdb's Avatar
 
Join Date: Jun 2011
Location: Elk city ok
Posts: 891
Re: 71 to 70 Axle swap

Thanks leddzepp. I wasn't aware of that.
Posted via Mobile Device
Maddoxdb is offline   Reply With Quote
Old 08-22-2013, 08:27 AM   #5
CC69Rat
Senior Member

 
CC69Rat's Avatar
 
Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,206
Re: 71 to 70 Axle swap

71-72 axles are 31 5/16 long if you measure from the mounting surface (where the wheel would meet the axle on that outer edge) all the way to the end of the splines.

67-~~70 are 30 1/2 at that same point. Just an easy way to know what you have vs. what will swap.

If you lay under the truck and measure from the inner edge of one brake backing plate to the other, the later rear end will be 57". The early one will be 55.5" Again, just an easy way to tell without taking the wheels off or axles out to measure as I mentioned above.

If you have the 57" rear housing originally (highly possible) then the 71-72 5 luggers will swap, no problem. If it's 55.5", Id go to Moser and just get some new ones.
__________________
Chad

1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway*
1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy
1986 Silverado Short Fleet - Scarlet *Sold*
1985 Silverado Short Fleet *Sold*
2022 Jeep Gladiator Mojave
2001 Jeep Cherokee XJ 4x4 - Lifted, Built
1992 Jeep Cherokee XJ 4x4 - Lifted
2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)
CC69Rat is offline   Reply With Quote
Old 08-22-2013, 09:27 AM   #6
volksworld
Registered User
 
Join Date: Apr 2011
Location: formerly NY currentlyNC
Posts: 389
Re: 71 to 70 Axle swap

I assume my leaf spring 70 must have had the wider housing cause its axles swapped with a 5 lug 73 , so you're not just limited to 71/72
__________________
1970 short step c10 leaf spring 454

Last edited by volksworld; 08-22-2013 at 09:33 AM.
volksworld is offline   Reply With Quote
Old 08-22-2013, 10:23 AM   #7
1970 CST Short Wide
Senior Moment
 
1970 CST Short Wide's Avatar
 
Join Date: Mar 2002
Location: Pittsburg Ca
Posts: 4,099
Re: 71 to 70 Axle swap

When I bought my 1970 it had 6 lug. I bought a 71 parts truck that had 5 lug and disc brakes. The axles were same lenght and switched out NO problem.
__________________
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
1970 CST Short Wide is offline   Reply With Quote
Old 08-22-2013, 10:32 AM   #8
davidfre21
Registered User
 
Join Date: May 2013
Location: odessa,tx
Posts: 72
Re: 71 to 70 Axle swap

ive been wondering how big of a pain it would be to have mine just re-drilled to 5lug. Pretty sure it can be done locally and hopefully cheap.
davidfre21 is offline   Reply With Quote
Old 08-22-2013, 10:57 AM   #9
CC69Rat
Senior Member

 
CC69Rat's Avatar
 
Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,206
Re: 71 to 70 Axle swap

70 model yr could have either, in 70 they just used what they had left from the shorties and late 70 startedinstalling the llonger ones.. (I guess?)
Posted via Mobile Device
__________________
Chad

1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway*
1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy
1986 Silverado Short Fleet - Scarlet *Sold*
1985 Silverado Short Fleet *Sold*
2022 Jeep Gladiator Mojave
2001 Jeep Cherokee XJ 4x4 - Lifted, Built
1992 Jeep Cherokee XJ 4x4 - Lifted
2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)
CC69Rat is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:28 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com