Changing from 6 Lug to 5 Lug. Will it fit? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

myoldchevytruck · 04-05-2008, 02:59 AM

I'm interested in changing the rear 6 lug axle to a 5 lug axle. The 6 lug is from a 1969 GMC Truck (originally leafs but now coils) and the 5 lug is from a 1967 Chevy Truck with coils.

Will this 5 lug rear end fit on my 69? Or is it....Too Short. Too long. OR Just Right. Thanks, Guys and Gals for your input. Harry

dave2953 · 04-05-2008, 03:26 AM

The 5 lug is from a 67? If so it isn't factory.

myoldchevytruck · 04-05-2008, 03:59 AM

True. What is the best way to check for fit? Where do I measure from on my 6 lug and then how do I compare the two? Thanks, Harry

Longhorn Man · 04-05-2008, 06:32 AM

Are you just swapping the whole rearend... or axle shafts?
The former will work, the latter will not.

myoldchevytruck · 04-05-2008, 06:51 AM

Andy, thinking about the whole rear end. Existing 6 lug rear end is from the leaf spring setup. As stated, I've swapped over to trailing arms.

prostreet1967 · 04-05-2008, 06:52 AM

just swap axles

prostreet1967 · 04-05-2008, 06:52 AM

o now i c

shifty · 04-05-2008, 06:53 PM

Measure the length of both axles from the square 4-bolt provision to square 4-bolt provision. If they are the same, just swap the axles. If one of them is between 1"-2" longer, then the axles are probably going to each by ~1/4" too long.

I have a 5-lug '71 (leaf spring) rear up here with a POSI (G80) rear if you need it. I'd need to re-install the axles into the tube, but it's not that hard to tend to. It's currently gathering dust in the corner.

(You'd need to pick it up, though)

04-05-2008, 02:59 AM	#1
myoldchevytruck Retired Air Force Veteran Join Date: Aug 2007 Location: Pembroke Pines, Florida 33024 Posts: 1,808	Changing from 6 Lug to 5 Lug. Will it fit? I'm interested in changing the rear 6 lug axle to a 5 lug axle. The 6 lug is from a 1969 GMC Truck (originally leafs but now coils) and the 5 lug is from a 1967 Chevy Truck with coils. Will this 5 lug rear end fit on my 69? Or is it....Too Short. Too long. OR Just Right. Thanks, Guys and Gals for your input. Harry __________________ Harry 69' SWB Step Side 1/2 Ton w/68' Front Clip Swap from Leafs to Trailing Arms (Complete) Swap 6 Lug to 5 Lug (w/ Disk Brakes in Front) 3/6 Drop Help Support The Board Click Here For Information On How To Subscribe Krue's FAQ Page Vendors

04-05-2008, 03:26 AM	#2
dave2953 Dave's not here, man Join Date: Jun 2004 Location: Winder, Georgia Posts: 2,000	Re: Changing from 6 Lug to 5 Lug. Will it fit? The 5 lug is from a 67? If so it isn't factory. __________________ - 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250

04-05-2008, 03:59 AM	#3
myoldchevytruck Retired Air Force Veteran Join Date: Aug 2007 Location: Pembroke Pines, Florida 33024 Posts: 1,808	Re: Changing from 6 Lug to 5 Lug. Will it fit? True. What is the best way to check for fit? Where do I measure from on my 6 lug and then how do I compare the two? Thanks, Harry __________________ Harry 69' SWB Step Side 1/2 Ton w/68' Front Clip Swap from Leafs to Trailing Arms (Complete) Swap 6 Lug to 5 Lug (w/ Disk Brakes in Front) 3/6 Drop Help Support The Board Click Here For Information On How To Subscribe Krue's FAQ Page Vendors

04-05-2008, 06:32 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Changing from 6 Lug to 5 Lug. Will it fit? Are you just swapping the whole rearend... or axle shafts? The former will work, the latter will not.

04-05-2008, 06:51 AM	#5
myoldchevytruck Retired Air Force Veteran Join Date: Aug 2007 Location: Pembroke Pines, Florida 33024 Posts: 1,808	Re: Changing from 6 Lug to 5 Lug. Will it fit? Andy, thinking about the whole rear end. Existing 6 lug rear end is from the leaf spring setup. As stated, I've swapped over to trailing arms. __________________ Harry 69' SWB Step Side 1/2 Ton w/68' Front Clip Swap from Leafs to Trailing Arms (Complete) Swap 6 Lug to 5 Lug (w/ Disk Brakes in Front) 3/6 Drop Help Support The Board Click Here For Information On How To Subscribe Krue's FAQ Page Vendors

04-05-2008, 06:52 AM	#6
prostreet1967 Registered User Join Date: Oct 2006 Location: fort worth texas Posts: 395	Re: Changing from 6 Lug to 5 Lug. Will it fit? just swap axles

04-05-2008, 06:53 PM	#8
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	Re: Changing from 6 Lug to 5 Lug. Will it fit? Measure the length of both axles from the square 4-bolt provision to square 4-bolt provision. If they are the same, just swap the axles. If one of them is between 1"-2" longer, then the axles are probably going to each by ~1/4" too long. I have a 5-lug '71 (leaf spring) rear up here with a POSI (G80) rear if you need it. I'd need to re-install the axles into the tube, but it's not that hard to tend to. It's currently gathering dust in the corner. (You'd need to pick it up, though) __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.



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