What rear is this in my 68 CST C20 ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

F-85 · 07-31-2011, 01:24 AM

I just picked up this 68 C20 with a Pullman Camper. It has a weird 10 bolt cover drop out style rear end. Looks like an old Olds/Pontiac rear. I was looking online and i couldnt find it. Here are the pics.

Longhorn Man · 07-31-2011, 01:29 AM

We genericly call it the Eaton rear.
It is a corperate rear, with an Eaton differental, also called an HO52.

F-85 · 07-31-2011, 01:42 AM

Cool thanks ill look it up. Is it any good?

67chevy1series · 07-31-2011, 05:05 AM

any more pics of the truck?

Shaky · 07-31-2011, 07:47 AM

Quote:

Originally Posted by F-85

Cool thanks ill look it up. Is it any good?

Do a search on this website. There's lots of threads/info.

I think it's a good rear. The downsides are the lack of gears below 4.10 (except for some aftermarket 3.90s that are hard to find), and the spherical carrier bearings are somewhat sensitive to debris and expensive to replace.

Longhorn Man · 07-31-2011, 10:38 AM

they are awesome dam near indestructible rears.
but parts are getting hard to find, the lack of higher gears... 4.10 is as high as you'll find. If you want lower gears, they are plentifull for this rear, and anyone with a 67 - 72 dually, they'll be more than happy to give you the 5.13 in there truck.
Brake parts are hard to locate, and when you do locate them, you'll only fid a few pieces. Things like drums were discontinued 20 years ago.

F-85 · 07-31-2011, 03:21 PM

Thanks for the help guys. The posi still works and with the tall tires it has it isnt bad driving. The brakes have only a 1000 miles on them so im good for now. The drums were turned and are in good shape. Needless to say its gonna stay in

bosco200 · 07-31-2011, 03:28 PM

I have the same rear end in my 72 C20, it had 4.57s, but I swapped to 4.10s, the rear end is very strong, I love it!

**special-K** · 08-01-2011, 09:49 AM

I don't know if Napa still has them,but in '04 I bought all the brake parts,bearings,and seals from them. Wheel studs required some extra searching,but they came up with those,too.

F-85 · 08-03-2011, 09:03 AM

Quote:

Originally Posted by special-K

I don't know if Napa still has them,but in '04 I bought all the brake parts,bearings,and seals from them. Wheel studs required some extra searching,but they came up with those,too.

Its getting harder and harder to find some parts for Old cars and trucks. You make me wanna track down parts now and stock up. I havnt removed the drums to inspect the brakes yet. But he did give me the old pads he used and they were in good shape, no grooves. Just i set was cracked. The star wheel must have been adjusted wrong on one wheel.

pipeline · 08-03-2011, 09:37 AM

They can easily be converted to disk brakes. You do it they same as you would on the 14bff. You can also use axle shafts from a 14bff as long as you swap out the spider gears from the 14bff or find a detroit locker from the 14bff.

F-85 · 08-03-2011, 09:41 AM

Thats good info for the future. I most likly wont do a disk brake swap. But if i have a hard time finding parts its good to know more ways to get R done. Thanks

07-31-2011, 01:24 AM	#1
F-85 Registered User Join Date: Jul 2010 Location: Paw Paw,il Posts: 389	What rear is this in my 68 CST C20 ? I just picked up this 68 C20 with a Pullman Camper. It has a weird 10 bolt cover drop out style rear end. Looks like an old Olds/Pontiac rear. I was looking online and i couldnt find it. Here are the pics.

07-31-2011, 01:29 AM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What rear is this in my 68 CST C20 ? We genericly call it the Eaton rear. It is a corperate rear, with an Eaton differental, also called an HO52.

07-31-2011, 01:42 AM	#3
F-85 Registered User Join Date: Jul 2010 Location: Paw Paw,il Posts: 389	Re: What rear is this in my 68 CST C20 ? Cool thanks ill look it up. Is it any good?

07-31-2011, 05:05 AM	#4
67chevy1series Registered User Join Date: Mar 2010 Location: a t w a t e r cali 95301 Posts: 10,713	Re: What rear is this in my 68 CST C20 ? any more pics of the truck?

07-31-2011, 10:38 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: What rear is this in my 68 CST C20 ? they are awesome dam near indestructible rears. but parts are getting hard to find, the lack of higher gears... 4.10 is as high as you'll find. If you want lower gears, they are plentifull for this rear, and anyone with a 67 - 72 dually, they'll be more than happy to give you the 5.13 in there truck. Brake parts are hard to locate, and when you do locate them, you'll only fid a few pieces. Things like drums were discontinued 20 years ago.

07-31-2011, 03:21 PM	#7
F-85 Registered User Join Date: Jul 2010 Location: Paw Paw,il Posts: 389	Re: What rear is this in my 68 CST C20 ? Thanks for the help guys. The posi still works and with the tall tires it has it isnt bad driving. The brakes have only a 1000 miles on them so im good for now. The drums were turned and are in good shape. Needless to say its gonna stay in

07-31-2011, 03:28 PM	#8
bosco200 Registered User Join Date: Dec 2009 Location: Ste. Genevieve, MO Posts: 526	Re: What rear is this in my 68 CST C20 ? I have the same rear end in my 72 C20, it had 4.57s, but I swapped to 4.10s, the rear end is very strong, I love it!

08-01-2011, 09:49 AM	#9
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,852	Re: What rear is this in my 68 CST C20 ? I don't know if Napa still has them,but in '04 I bought all the brake parts,bearings,and seals from them. Wheel studs required some extra searching,but they came up with those,too. __________________ "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 ~

08-03-2011, 09:37 AM	#11
pipeline Registered User Join Date: Jul 2009 Location: Albemarle, NC Posts: 7	Re: What rear is this in my 68 CST C20 ? They can easily be converted to disk brakes. You do it they same as you would on the 14bff. You can also use axle shafts from a 14bff as long as you swap out the spider gears from the 14bff or find a detroit locker from the 14bff. __________________ http://www.wheelindixie.com/forums/s...ead.php?t=7193

08-03-2011, 09:41 AM	#12
F-85 Registered User Join Date: Jul 2010 Location: Paw Paw,il Posts: 389	Re: What rear is this in my 68 CST C20 ? Thats good info for the future. I most likly wont do a disk brake swap. But if i have a hard time finding parts its good to know more ways to get R done. Thanks



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