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08-21-2013, 11:01 PM
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#1 |
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Registered User
Join Date: Aug 2012
Location: Chesapeake Va.
Posts: 7
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71 to 70 Axle swap
Does anyone know if I can use 71 5 lug axles in my 6 lug 70 rearend ?
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08-21-2013, 11:08 PM
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#2 |
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Registered User
 
Join Date: Jun 2011
Location: Elk city ok
Posts: 891
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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.
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08-22-2013, 12:18 AM
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#3 |
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Moderator
 
Join Date: May 2007
Location: Southern Cal
Posts: 20,031
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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!
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__________________
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 RIP FleetsidePaul |
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08-22-2013, 08:16 AM
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#4 |
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Registered User
Join Date: Jun 2011
Location: Elk city ok
Posts: 891
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Re: 71 to 70 Axle swap
Thanks leddzepp. I wasn't aware of that.
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08-22-2013, 08:27 AM
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#5 |
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Registered User
 
Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,212
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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.
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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) |
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08-22-2013, 09:27 AM
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#6 |
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Registered User
Join Date: Apr 2011
Location: formerly NY currentlyNC
Posts: 390
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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. |
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08-22-2013, 10:23 AM
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#7 |
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Senior Moment
Join Date: Mar 2002
Location: Pittsburg Ca
Posts: 4,185
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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 |
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08-22-2013, 10:32 AM
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#8 |
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Registered User
Join Date: May 2013
Location: odessa,tx
Posts: 72
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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.
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08-22-2013, 10:57 AM
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#9 |
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Registered User
Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,212
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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?)
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__________________
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) |
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