rear end swap question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

57larry · 01-29-2008, 04:39 AM

yea, I'm a newby, is there a search mode? anyway, I want to swap out the 6 lug rear from a 69 C-10 1/2 ton to a newer 5 lug rear. I have a 73 C-10 5 lug rear with leaf springs. your help please

BarryB · 01-29-2008, 04:50 AM

Is your 69 leaf or coils springs on back??
I have seen the newer diffs bolted up to the older coil spring set up. They had to fabricate a panhard bar brace because the 73 up didn't have the panhard bars. And the spring perches are welded on straight whereas the coilspring set up diffs. have the spring perches are on an angle.
Just seems to me it would be easier, to find a 71 rearend already 5 lug and made for the coilsprings

joe b · 01-29-2008, 04:52 AM

You can take the brackets off the one and put on the other rear

57larry · 01-29-2008, 06:04 AM

yes, that's my question, the 69 has coils and the 73 has leaf springs, can I mate the 2?

502tripower · 01-29-2008, 06:15 AM

Quote:

Originally Posted by 57larry

yes, that's my question, the 69 has coils and the 73 has leaf springs, can I mate the 2?

You can either remove the old pads from your original rearend housing and reinstall them on the 73' haousing or buy new pads. Here is a pic of my 9" that I did.

dingo_dan_22 · 01-29-2008, 02:27 PM

You can also take your axles and a 5 lug drum to a machine shop and have them machine down the hub and redrill the axle. When I called around I was quoted between $80 and $140 dollars.

**tll74** · 01-29-2008, 02:54 PM

I'm a new to this forum as well. In fact my first reply.The other suggestions are do able but your best bet due to the track bar is to get a 71-72 coil spring rearend out of a C-10. It will be a direct fit with absolutly no modifications. Although it is a couple inches wider. All 71-up 2 or 4wd are wider. The same as the 73 rearend you have. These 71-72 rearends are generally found for 150-200 bucks at a salvage yard. good luck

01-29-2008, 04:39 AM	#1
57larry Registered User Join Date: Nov 2007 Location: Indianapolis Posts: 1,161	rear end swap question yea, I'm a newby, is there a search mode? anyway, I want to swap out the 6 lug rear from a 69 C-10 1/2 ton to a newer 5 lug rear. I have a 73 C-10 5 lug rear with leaf springs. your help please

01-29-2008, 04:50 AM	#2
BarryB Senior Member Join Date: Jul 2006 Location: Blountville, Tn. Posts: 3,904	Re: rear end swap question Is your 69 leaf or coils springs on back?? I have seen the newer diffs bolted up to the older coil spring set up. They had to fabricate a panhard bar brace because the 73 up didn't have the panhard bars. And the spring perches are welded on straight whereas the coilspring set up diffs. have the spring perches are on an angle. Just seems to me it would be easier, to find a 71 rearend already 5 lug and made for the coilsprings __________________ We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff!

01-29-2008, 04:52 AM	#3
joe b Registered User Join Date: Feb 2005 Location: milford,ne. Posts: 51	Re: rear end swap question You can take the brackets off the one and put on the other rear

01-29-2008, 06:04 AM	#4
57larry Registered User Join Date: Nov 2007 Location: Indianapolis Posts: 1,161	Re: rear end swap question yes, that's my question, the 69 has coils and the 73 has leaf springs, can I mate the 2?

01-29-2008, 02:27 PM	#6
dingo_dan_22 Registered User Join Date: Dec 2006 Location: Saskatchewan Posts: 119	Re: rear end swap question You can also take your axles and a 5 lug drum to a machine shop and have them machine down the hub and redrill the axle. When I called around I was quoted between $80 and $140 dollars. __________________ 71' Chevrolet -> 350c.i. w/ 600 Edelbrock Carb, Headers, P/S, 3/5 Drop

01-29-2008, 02:54 PM	#7
tll74 "Junkyard Dog" Join Date: Jan 2008 Location: Springfield Oregon Posts: 2,527	Re: rear end swap question I'm a new to this forum as well. In fact my first reply.The other suggestions are do able but your best bet due to the track bar is to get a 71-72 coil spring rearend out of a C-10. It will be a direct fit with absolutly no modifications. Although it is a couple inches wider. All 71-up 2 or 4wd are wider. The same as the 73 rearend you have. These 71-72 rearends are generally found for 150-200 bucks at a salvage yard. good luck



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