Att: C20 Owners with Rear Coils - The 1947 - Present Chevrolet & GMC Truck Message Board Network

trukman1 · 10-25-2002, 10:22 AM

Can anyone tell me what the differences are in the trailing arms from the Eaton and Dana60 rear differentials compared to the half tons? What I'm trying to do is find a trailing arm to fit the Corp 14 bolt rearend in my garage to my half ton truck and keep my coils. Thanks in advance for the help. Trukman1

crazy4chevs · 10-25-2002, 11:20 AM

The 1/2 ton arms should be the same dimensions except for that 3/4 ton arms had extra bracing on top and bottom of the arms for the extra payloads.

da-burb · 10-25-2002, 05:19 PM

There isn't any difference in the trailing arms Dana vs Corp rears. There could be a difference in the panhard bar. They could be different lengths, I don't know for sure.

1971short4X4 · 10-25-2002, 08:38 PM

Ok people are saying there isn't any difference in the arms... so here's my question. Aren't the axle tubes bigger on a dana 60 or Eaton rearends versus the 12 bolt???

If so how are these axles attached. (bigger u bolts would need different holes in the trailing arm) so are the axle tubes the same size and so the same ubolts or if not how is this done.

I am asking because on the trucks tv 2wd truck they are mounting a dana 60 on a trailing arm 68 truck and I saw nothing mentioned about needing special u bolts or new holes in the arms so I am wondering how this is done.

Thanks

da-burb · 10-25-2002, 08:51 PM

I think they all have 3" tubes, 12 bolts, dana44's, Dana 60's, and Corp. I sold a set of trailing arms from a 72 C10 that went onto a 67 C20 with a Corp axle. They were a direct replacement.

**Classic Heartbeat** · 10-26-2002, 02:11 AM

They are all the same, with the exception of the reinforcing plates on the 3/4 tons arms. Doesn't matter corperate or Dana, 1/2 or 3/4 ton, they will all interchange. Where the difference is between the Dana 60 and the corperate is the length of the pan hard bar. The Dana 60 bar is longer than the Corperate. I just finished making this change of rear ends.... I swapped my Dana 60 from my 72 Burb into my 67 3/4 ton Chev truck. Then I took the Corperate rear out of the 67 and mounted it under my Burb.... Even the U-bolts are all the same.... Which insidently we sell and they are the true 3/4" ones and not the 5/8" ones that other companys sell........ WES www.ClassicHeartbeat.com

10-25-2002, 10:22 AM	#1
trukman1 Registered User Join Date: Apr 2001 Location: Beavercreek, Ohio 45431 Posts: 737	Att: C20 Owners with Rear Coils Can anyone tell me what the differences are in the trailing arms from the Eaton and Dana60 rear differentials compared to the half tons? What I'm trying to do is find a trailing arm to fit the Corp 14 bolt rearend in my garage to my half ton truck and keep my coils. Thanks in advance for the help. Trukman1

10-25-2002, 11:20 AM	#2
crazy4chevs Registered User Join Date: Oct 2002 Location: Des Moines WA. (Kent, area) Posts: 668	Trailing arms The 1/2 ton arms should be the same dimensions except for that 3/4 ton arms had extra bracing on top and bottom of the arms for the extra payloads. __________________ 70 chev c10 swb fleet 72 grill, sb 400, 2/4 drop. 68 chev c10 swb fleet Early classic 4/6 drop with 4wheel disc brakes 9"rear 67-8 buckets tilt and A/C Classic GM Truck Club of Washington .

10-25-2002, 05:19 PM	#3
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	There isn't any difference in the trailing arms Dana vs Corp rears. There could be a difference in the panhard bar. They could be different lengths, I don't know for sure. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

10-25-2002, 08:51 PM	#5
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	I think they all have 3" tubes, 12 bolts, dana44's, Dana 60's, and Corp. I sold a set of trailing arms from a 72 C10 that went onto a 67 C20 with a Corp axle. They were a direct replacement. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

10-26-2002, 02:11 AM	#6
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,766	They are all the same, with the exception of the reinforcing plates on the 3/4 tons arms. Doesn't matter corperate or Dana, 1/2 or 3/4 ton, they will all interchange. Where the difference is between the Dana 60 and the corperate is the length of the pan hard bar. The Dana 60 bar is longer than the Corperate. I just finished making this change of rear ends.... I swapped my Dana 60 from my 72 Burb into my 67 3/4 ton Chev truck. Then I took the Corperate rear out of the 67 and mounted it under my Burb.... Even the U-bolts are all the same.... Which insidently we sell and they are the true 3/4" ones and not the 5/8" ones that other companys sell........ WES www.ClassicHeartbeat.com __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

10-25-2002, 08:38 PM	#4
1971short4X4 Registered User Join Date: Nov 2001 Location: Mission Viejo, Ca Posts: 377	Ok people are saying there isn't any difference in the arms... so here's my question. Aren't the axle tubes bigger on a dana 60 or Eaton rearends versus the 12 bolt??? If so how are these axles attached. (bigger u bolts would need different holes in the trailing arm) so are the axle tubes the same size and so the same ubolts or if not how is this done. I am asking because on the trucks tv 2wd truck they are mounting a dana 60 on a trailing arm 68 truck and I saw nothing mentioned about needing special u bolts or new holes in the arms so I am wondering how this is done. Thanks



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