Did GM make a C 20 coil spring Dana 60 67-72?
 

All I’m finding are leaf spring Dana 60s. Does a coil spring version of this exist for a three-quarter ton??

Steve weim55 Colorado

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

Yes they do, kinda rare. Majority of the coil rears were HO52. Even some of the parts books at NAPA distinguish between coil and leaf for rear diff application of brake parts

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

Most coil dana60's were found in big block trucks and suburbans with 3:54 ratios. Definitely uncommon :metal:

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

^^^ The BBC/TH400 combo that came through with 3.54:1 ratio is the only Dana60/coil application I know of. And that is only because that ratio wasn't available in corporate rears.

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

Perfect, is that the one you want to sell me ?? :)

Steve weim55 Colorado

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

Sorry Steve, this rear should be living life in Kentucky soon.

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

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I think I have one under a '72 GMC frame. I stuck it under the frame so it didn't have to sit on the ground and set a cab and bed on the frame so they didn't have to sit on the ground. I remember it wouldn't bolt up to the GMC leaf springs because the perches were on an angle. No pictures of it though.

LockDoc

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

I’m guessing that mine is the Dana 60.. 3/4 bb with th400

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

That is a 60

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

How much is shipping something that heavy?

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

I have one.
69, big block, th400, 3.54 gears.

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

I searched long and hard to find a coil spring Dana 60. It just showed up today. I stumbled upon it on Facebook Marketplace and had it shipped from Colorado. They weren’t able to tell me the gear ratio before it was shipped so i was pretty happy to find that it was a 3.54 when it got here today.
👍
I’ll be going through it and adding a posi before it goes in the truck.

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

Congratulations! I stumbled on one that way. The guy said he wasn't sure of the ratio, but the truck was a 396/TH400. He didn't need to check. I knew it would be a 3.54.

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

Good chance of it having a power-loc posi. You'll know when you pull the cover

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

I posted the SPID in another post but my 72 C20 has a coil spring Dana 60 with 402/400 combo, that was the only reason I bought it, want to turn it into a Hotrod Cowboy Cadillac

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

Curious about how much one is worth and rough idea on shipping?

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

I believe shipping was under $200 from Denver to just north of Seattle. I am into this for over $850 and I haven't taken it off of the pallet yet. It was this or convert to 1/2 ton axles. I really like my C20. I didn't want to change that part of the truck. I might someday if I want to really hotrod the truck but I doubt that will happen.

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

Learn something new every day. Appears that’s what my 72 3/4 big block truck has

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

Well,, this has been a long and expensive project. If you are thinking of swapping to a Dana 60 rear for your coil sprung truck, start saving. I really don’t know what other options I had to get this truck to something higher than 4.10 years.
I’m not unhappy, just tired of spending money and ready to drive it again. I pick up the driveshaft today and should be cruising tonight.

Junkyard rear end with freight $875
Machine shop to build new track bar pin that was broken on housing $275
Randy’s Ring and Pinion for a rebuild with new posi. $2300 (Inside of housing was damaged and had to be machined on the bearing surface. This cost me an extra $300)
Brakes and lines $400
Track bar and mount $100?
Shorten driveshaft, carrier bearing, joints $400

Total without misc items that I forgot about. $4,300

I will have to get my tailpipes reworked. I had to remove them because the track bar location is different on the is housing. Being lowered 6” makes it really tight above the axle tubes. I am scheduled at the muffler shop tomorrow. I guess that’s another couple hundred.

Good luck.

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

I have a dana 60 and i'm wondering if it came out of a trailing arm/coil spring truck. The track bar doesn't mount to the center section. It has a bracket on the right axle tube. The brackets for the trailing arms are different as well. I checked and a U bolt will fit in them like you are mounting it to a trailing arm. Wish I could upload images of it.

Re: Did GM make a C 20 coil spring Dana 60 67-72?
 

I'm going to send you a message.