Would a 69 6 lug 12 bolt rear end be the narrow one? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

7T2 · 01-03-2008, 12:39 PM

I'm looking at one on ebay, and I'm looking for the slightly narrower rear end. The one I'm looking at is out of a 69 SWB 4X4 truck and is a GM 12 bolt with 6 lug axles. Not sure if I can get out to measure it myself before the auction ends. I asked seller to measure it, but there are so many different ways to measure that you never know if someone is measuring the same way you would.

Just wondering if ALL 6 lug rear ends were narrower than the later 5 lug ones.

Longhorn Man · 01-03-2008, 12:44 PM

it would be the wide on.
in 70, the early ones were wide, later ones were narrow.

7T2 · 01-03-2008, 12:59 PM

Forgot to mention it's off a half ton. Did 4x4's and 2x4's use different rear ends?

1969k10stepside · 01-03-2008, 01:26 PM

I don't know if they are narrower or wider than the 2wds in any year.There will be leaf spring perches on a 4wd (which are different from 2wd leaf spring perches I believe too),and the 2wd axle if it has coils on the back would have the tracking arm mount the 4wd won't have.But the axle is the same axle.

Longhorn Man · 01-03-2008, 01:28 PM

I was talkin 2 wheel drive, no clue on the 4X4's

**Palf70Step** · 01-03-2008, 01:30 PM

Andy, I thought in mid 70 to 72 the rear axles were longer (wider) that the others. Sure seems that way on mine. The 70, and 72 axles are wider than the one that came on the 69..

kelsfine69 · 01-03-2008, 01:42 PM

I know that the 65-66 trucks are narrower than a 69 6 bolt( i put one in my truck) But it looks the same and bolts the same( trailing arm) so if he says its a 69 that it might not be?? something to concider

**uncle** · 01-03-2008, 01:45 PM

They are wider starting sometime in 70. All 4x4's will be leaf spring. The difference in width is about 3/4" on each side. Yes,it is the narrow one.

Longhorn Man · 01-03-2008, 02:15 PM

oh crap...
I got it totally bass ackwards.

**Palf70Step** · 01-03-2008, 02:56 PM

Quote:

Originally Posted by Longhorn Man

oh crap...
I got it totally bass ackwards.

You sure those were normal brownies??

Longhorn Man · 01-03-2008, 03:02 PM

Lol!!!!!!

7T2 · 01-03-2008, 03:31 PM

Quote:

Originally Posted by Longhorn Man

oh crap...
I got it totally bass ackwards.

Well, that's what I was thinkin', but I didn't want to call out the man with 63,000 posts until I had some more proof...

I think I'll take a chance on it. Comes with the front axle too, maybe if I clean 'em up real nice I can end up with what I need for free...

**special-K** · 01-04-2008, 02:03 AM

The 4wds and 2wds got wider in`70.

class01 · 01-04-2008, 03:51 AM

So if i have a 69 rearend, does that mean i can fit a wider rim or run more offset?

Longhorn Man · 01-04-2008, 11:34 AM

It's only a 3/8 inch diff on each side, but in a nutshell, yeah.

**uncle** · 01-04-2008, 11:38 AM

I think it's actually 3/4" on each side,but have been wrong several times this year already.

Longhorn Man · 01-04-2008, 11:49 AM

I'm just gonna shut up.
I just looked in my notes, you are right. 56 inch verses 57 1/2 inch wide.

**uncle** · 01-04-2008, 12:39 PM

The only reason I know is because I used to have around 40 12 bolts sitting around. I also had several people years ago lie to me about the axle swap on these year trucks and found out the hard way.

gijoecarlos · 10-01-2015, 11:58 PM

Quick Question, If i have a 2wd leaf 71 c10 and want to get that more narrow 67-69 rear end, Can i just get a 4x4 rear end or does it have to be a 2wd rear end? Im just currious to save me the trouble of having to weld anything onto the new rear end? Also what kind of gear rations did the 67-69 rear ends have? Mines currently a 373 and its good with my 700r4 but the axle is a little wide for my tires and rim combo

**uncle** · 10-02-2015, 01:21 PM

Pretty sure spring perches and shock mounts are different. Be easier to get early leaf rear.

01-03-2008, 12:39 PM	#1
7T2 Active Member Join Date: Dec 2004 Location: Marysville, OH Posts: 667	Would a 69 6 lug 12 bolt rear end be the narrow one? I'm looking at one on ebay, and I'm looking for the slightly narrower rear end. The one I'm looking at is out of a 69 SWB 4X4 truck and is a GM 12 bolt with 6 lug axles. Not sure if I can get out to measure it myself before the auction ends. I asked seller to measure it, but there are so many different ways to measure that you never know if someone is measuring the same way you would. Just wondering if ALL 6 lug rear ends were narrower than the later 5 lug ones. __________________ 1957 GMC Ambulance 1962 Belair Wagon 1963 C80 Truck Cab FOR SALE 1969 Chevy C10 Short Bed 1972 Chevy C10 Long Bed SOLD 1996 C3500 Dually SOLD

01-03-2008, 12:44 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? it would be the wide on. in 70, the early ones were wide, later ones were narrow.

01-03-2008, 12:59 PM	#3
7T2 Active Member Join Date: Dec 2004 Location: Marysville, OH Posts: 667	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? Forgot to mention it's off a half ton. Did 4x4's and 2x4's use different rear ends? __________________ 1957 GMC Ambulance 1962 Belair Wagon 1963 C80 Truck Cab FOR SALE 1969 Chevy C10 Short Bed 1972 Chevy C10 Long Bed SOLD 1996 C3500 Dually SOLD

01-03-2008, 01:26 PM	#4
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? I don't know if they are narrower or wider than the 2wds in any year.There will be leaf spring perches on a 4wd (which are different from 2wd leaf spring perches I believe too),and the 2wd axle if it has coils on the back would have the tracking arm mount the 4wd won't have.But the axle is the same axle. Last edited by 1969k10stepside; 01-04-2008 at 04:49 AM.

01-03-2008, 01:28 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? I was talkin 2 wheel drive, no clue on the 4X4's

01-03-2008, 01:30 PM	#6
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,268	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? Andy, I thought in mid 70 to 72 the rear axles were longer (wider) that the others. Sure seems that way on mine. The 70, and 72 axles are wider than the one that came on the 69.. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

01-03-2008, 01:42 PM	#7
kelsfine69 18 Till I Die Join Date: Mar 2005 Location: Alberta, Canada Posts: 1,522	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? I know that the 65-66 trucks are narrower than a 69 6 bolt( i put one in my truck) But it looks the same and bolts the same( trailing arm) so if he says its a 69 that it might not be?? something to concider __________________ 2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home...

01-03-2008, 01:45 PM	#8
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? They are wider starting sometime in 70. All 4x4's will be leaf spring. The difference in width is about 3/4" on each side. Yes,it is the narrow one. Last edited by uncle; 01-03-2008 at 01:50 PM.

01-03-2008, 02:15 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? oh crap... I got it totally bass ackwards.

01-03-2008, 03:02 PM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? Lol!!!!!!

01-04-2008, 02:03 AM	#13
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? The 4wds and 2wds got wider in`70. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

01-04-2008, 03:51 AM	#14
class01 Registered User Join Date: Jul 2007 Location: Utah Posts: 295	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? So if i have a 69 rearend, does that mean i can fit a wider rim or run more offset?

01-04-2008, 11:34 AM	#15
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? It's only a 3/8 inch diff on each side, but in a nutshell, yeah.

01-04-2008, 11:38 AM	#16
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? I think it's actually 3/4" on each side,but have been wrong several times this year already.

01-04-2008, 11:49 AM	#17
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? I'm just gonna shut up. I just looked in my notes, you are right. 56 inch verses 57 1/2 inch wide.



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01-04-2008, 12:39 PM	#18
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? The only reason I know is because I used to have around 40 12 bolts sitting around. I also had several people years ago lie to me about the axle swap on these year trucks and found out the hard way.

10-01-2015, 11:58 PM	#19
gijoecarlos Registered User Join Date: Jul 2014 Location: Salinas Ca. Posts: 45	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? Quick Question, If i have a 2wd leaf 71 c10 and want to get that more narrow 67-69 rear end, Can i just get a 4x4 rear end or does it have to be a 2wd rear end? Im just currious to save me the trouble of having to weld anything onto the new rear end? Also what kind of gear rations did the 67-69 rear ends have? Mines currently a 373 and its good with my 700r4 but the axle is a little wide for my tires and rim combo

10-02-2015, 01:21 PM	#20
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	Re: Would a 69 6 lug 12 bolt rear end be the narrow one? Pretty sure spring perches and shock mounts are different. Be easier to get early leaf rear.

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