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#1 |
Registered User
Join Date: Apr 2017
Location: Sacramento
Posts: 23
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Why should I upgrade rear end differential??
Hey guys, I have a 69 c10 torn down to the frame, freshly sandblasted and painted. It has the original back end no leafs and I’m wondering if I should just clean and paint it or replace it off another truck or purchase one? It’s not going to be a daily driver but it won’t be a show car either, any ideas?
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#2 |
Registered User
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
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Re: Why should I upgrade rear end differential??
If it ain't broke, don't fix it
__________________
1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!) |
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#3 |
Senior Member
![]() ![]() Join Date: Sep 2008
Location: Harrison, Arkansas
Posts: 9,815
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Re: Why should I upgrade rear end differential??
There is no reason to change it.
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other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless. |
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#4 |
Senior Member
![]() Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,911
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Re: Why should I upgrade rear end differential??
What's your goal? Is the truck getting more horsepower, or staying mostly stock? How do you plan to drive it, and do you know what the current rear end ratio is?
If you plan to run it hard, you might want to consider upgrading to a limited-slip and/or changing the gear ratio. But if you are leaving it mostly stock and driving it only occasionally, the stock 12 bolt rear end is very stout.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
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#5 |
Registered User
Join Date: Dec 2012
Location: Temple City
Posts: 3,590
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Re: Why should I upgrade rear end differential??
Leave it or rebuild it. A nicely built 12 truck is good for 500+ hp.
If your shooting for the stars or running big tires there is little that cant be done to it to survive most situations |
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#6 |
Senior Member
![]() Join Date: Jul 2015
Location: Warrenton VA
Posts: 1,052
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Re: Why should I upgrade rear end differential??
This right here, unless you're going to all out drag the 12 bolt can be set up to handle pretty much anything you throw at it. I'd figure out what gears you have in it and then decide what you want to do with the truck and that will help if you should do limited slip, change gearing etc...
__________________
71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop. 07 Silverado Classic 2wd 95 Camaro 427SBC/TH350 |
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#7 |
Registered User
Join Date: Jan 2007
Location: Puyallup, WA
Posts: 1,662
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Re: Why should I upgrade rear end differential??
The only thing you need to change is the gear oil. These are great rear ends.
__________________
72 C10 lwb fleetside -stock 350/350 combo |
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#8 |
Registered User
![]() Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Why should I upgrade rear end differential??
Yea, I would change the fluid, inspect for wear and leave it if possible. These trucks were built on a pretty solid foundation or platform.
That is, until the EPA got involved which really does not affect them until 74. |
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