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#1 |
Registered User
Join Date: Feb 2008
Location: Southern Ut
Posts: 85
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69 c20 10 bolt rear end making noise. Rebuild or replace?
Hi everyone.
New here and new to trucks actually. I've spent most of my time working on modern FWD vehicles so this thing is a big learning experience for me. Anyway, I have a 69 c20 custom camper that I just picked up for $650. The 350 in it runs perfect and is in excellent shape, but it has a 10 bolt rear end that is whining on deceleration and sometimes making a clicking noise. It has signs of leaking and I had to add a lot of fluid to it to fill it back up. It is a coil spring/trailing arm suspension truck. My ultimate goals for this truck are to build an excellent daily driver. I plan on converting it to a shortbed, and swapping in a 5.3 (or 4.8) gen III eventually, and lowering ~4" all around, but that won't be until I finish my education (~18 months from now). Ambitious I know, but attainable. I want to fix the rear end properly and set it up for my future goals so I don't have to mess with it down the road, but my budget currently is less than around $750 for fixing this problem (other things on the truck need attention as well). I want to get away from the 8 lug, and go 5 lug disc/drum in the long run. Here are my questions for all you experts. What gearing is in my truck stock (4.10?)? and what gearing is available for the 10 bolt? Is the 10 bolt worth rebuilding? or should I just look for a good used 12 bolt or something else? If I were to keep the 10 bolt, can I just swap axles/brakes/hubs for the 5 lug setup in the future? Is it likely that damage was caused to the housing from running low on fluid for a while? Is $750 budget doable or should I wait and save? and lastly, I want to be able to get around 20mpg or better with my 5.3/4L60E setup, so gearing is very important. I won't be towing or drag racing this truck, just cruising and hauling stuff on occasion. What gearing would you recommend? I apologize if these are redundant questions or this is in the wrong section. I did a brief search, but due to my lack of time and the fact that this problem needs to get fixed sooner than later I figured I just ask for your help. Thanks ![]() Last edited by bambbrose; 05-01-2008 at 10:18 AM. |
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#2 |
Registered User
Join Date: Apr 2004
Location: Clanton, AL
Posts: 1,253
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Re: 69 c20 10 bolt rear end making noise. Rebuild or replace?
Personally, I wouldn't bother rebuilding a GM 10 bolt. Are you sure its a GM Factory 10 bolt & not a Dana variety? These trucks never came stock w/ GM 10 bolts.
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85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days! ![]() 05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal! ![]() |
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#3 |
Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
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Re: 69 c20 10 bolt rear end making noise. Rebuild or replace?
My '69 C-20 has an Eaton HO52 rearend. I think if I remember correctly it has 10 bolts on the cover. I'll have to go out and count them...
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#4 |
Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: 69 c20 10 bolt rear end making noise. Rebuild or replace?
I wouldn't try to rebuild the 10 bolt rear end.
I would swap it out for a 12 bolt '71 or newer with 5 bolt anxles and 3.08 instead. They are pretty easy to find and not real expensive. Danny |
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#5 |
Registered User
Join Date: Feb 2008
Location: Southern Ut
Posts: 85
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Re: 69 c20 10 bolt rear end making noise. Rebuild or replace?
Hey thanks for the help guys. I looked into the 71-72 5 lug axles more and that seems like exactly what I'm looking for, plus its a lot cheaper so I'll have money left over to refresh everything that I get.
Better yet I found some listed in a local junkyard so I just gotta make the trip now. Thanks again |
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#6 | |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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Re: 69 c20 10 bolt rear end making noise. Rebuild or replace?
Quote:
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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