axel swaps - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JayDubBlazer · 03-18-2006, 10:34 PM

What years of axels will fit on a 67-72? I would like to swap one out so I can have 3.73 ratio and a wider stance.

**dennislbrooks** · 03-18-2006, 11:14 PM

Depends if you want 6 or 5 lugs but I take you are asking what years rear differential housings will work on a 65-72 2wd.... 73 up have leaf springs instead of coils. 71-72 are 3/4" wider on each side and are 5 lug. Most likely a 65-72 with a manual trans had 3.73 gearing. Many can be modified/fabricated to work.

JayDubBlazer · 05-07-2006, 11:52 AM

I just want the wider axel with a 3.73 ratio

krue · 05-07-2006, 12:02 PM

If your talking about your 72, the 73+ rears are the same width.

Longhorn Man · 05-07-2006, 03:55 PM

there are no easy swaps to get wider than your 72's rear.
GM claims to have done that intentionally (front track width wider than rear) but most say i't BS. Even if you look on more modern trucks, it's the same way.
You could get rims with less back spacing...a deeper dish if you will. That'll place the tires out further.

cell · 05-09-2006, 06:34 PM

are the 73+ rears the same width as a 67? I have been thinking about buying some coil spring seats to have welded onto a 73+ rear...

**dennislbrooks** · 05-09-2006, 07:01 PM

3/4" wider on each side---this is a plus ----10" wide wheels with 4" backspacing are near perfect

03-18-2006, 10:34 PM	#1
JayDubBlazer go cyclones Join Date: Jun 2003 Location: Ames, IA Posts: 1,885	axel swaps What years of axels will fit on a 67-72? I would like to swap one out so I can have 3.73 ratio and a wider stance. __________________ Wes PROJECT OLE GREEN 1972 Blazer 4X4 350/700R4 2017 Silverado LT

03-18-2006, 11:14 PM	#2
dennislbrooks Senior Member Join Date: Feb 2004 Location: Williamsburg, Ohio Posts: 1,766	Re: axel swaps Depends if you want 6 or 5 lugs but I take you are asking what years rear differential housings will work on a 65-72 2wd.... 73 up have leaf springs instead of coils. 71-72 are 3/4" wider on each side and are 5 lug. Most likely a 65-72 with a manual trans had 3.73 gearing. Many can be modified/fabricated to work.

05-07-2006, 11:52 AM	#3
JayDubBlazer go cyclones Join Date: Jun 2003 Location: Ames, IA Posts: 1,885	Re: axel swaps I just want the wider axel with a 3.73 ratio __________________ Wes PROJECT OLE GREEN 1972 Blazer 4X4 350/700R4 2017 Silverado LT

05-07-2006, 12:02 PM	#4
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Re: axel swaps If your talking about your 72, the 73+ rears are the same width. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

05-07-2006, 03:55 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: axel swaps there are no easy swaps to get wider than your 72's rear. GM claims to have done that intentionally (front track width wider than rear) but most say i't BS. Even if you look on more modern trucks, it's the same way. You could get rims with less back spacing...a deeper dish if you will. That'll place the tires out further.

05-09-2006, 06:34 PM	#6
cell Active Member Join Date: Nov 2005 Location: Austin Posts: 217	Re: axel swaps are the 73+ rears the same width as a 67? I have been thinking about buying some coil spring seats to have welded onto a 73+ rear...

05-09-2006, 07:01 PM	#7
dennislbrooks Senior Member Join Date: Feb 2004 Location: Williamsburg, Ohio Posts: 1,766	Re: axel swaps 3/4" wider on each side---this is a plus ----10" wide wheels with 4" backspacing are near perfect



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