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06-25-2017, 09:19 PM
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#1 |
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Registered User
Join Date: Jun 2017
Location: Central illinois
Posts: 143
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12 bolt posi and gear cost
I just put 31in tall tires on the back of my 69 c10. I have 3.07 gear in my 12 bolt. The taller tire made that lower of course. I'm wanting to go 3.73 with posi. Ballpark, what's this going to cost me?
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06-25-2017, 09:28 PM
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#2 |
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Registered User
Join Date: Mar 2006
Location: Pittsburgh
Posts: 1,694
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Re: 12 bolt posi and gear cost
Jump onto Summit Racing and price it out. I took apart my rearend and removed the bearings then paid a guy $150 to put it back together with all the new parts that I purchased...
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Nate 1967 short fleet Project Blue Goose 'If it don't bounce back... heeheehee you go hungry!" Blues Brothers |
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06-25-2017, 09:47 PM
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#3 |
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Registered User
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
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Re: 12 bolt posi and gear cost
You can figure around $850 in parts for ring and pinion, positrack carrier assembly, new bearings, and misc parts. Plus $$ labor to have the rear end rebuilt and setup correctly by someone who knows what they're doing.
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"Negative people always seem to have a problem for every solution" |
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06-27-2017, 09:02 AM
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#4 |
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Registered User
Join Date: Dec 2014
Location: Rockport, Texas
Posts: 192
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Re: 12 bolt posi and gear cost
eBay has a few places selling a posi, gears, and all bearings & seals for less than $600 shipped. Search "12 bolt truck 3.73"
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06-27-2017, 09:50 AM
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#5 |
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Senior Member
 
Join Date: Jun 2009
Location: Belews Creek , NC
Posts: 4,220
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Re: 12 bolt posi and gear cost
Be careful with the off brand crap, it is not somewhere I would skimp. Eddie pretty much hit the nail on the head, with parts and labor you are looking at around a grand to 1200 to set it up right. I used a Yukon posi in mine that came with Richmond gears.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 Here is a link to the 3:73 setup https://www.amazon.com/Chevy-8-875-1...XEQ7Z81KA9RQ28
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Larry It is easily overlooked that what is now called vintage was once brand new. "Project 68" paypal.me/ldgrant |
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06-27-2017, 10:15 AM
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#6 |
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Senior Member
Join Date: Oct 2014
Location: New Palestine In
Posts: 930
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Re: 12 bolt posi and gear cost
I just had my 68's rebuilt a couple of months ago. I used Auburn posi, Richmond gears, new bearings and install kit, and I bought new axles and bearings. My total with labor was $1800.00. If you're not running an over drive tranny that 3.73 gear will be a screamer.
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Phil "Money is only a tool to create and achieve what you want most in life" PayPal: rodnrudy@comcast.net |
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06-27-2017, 10:47 AM
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#7 |
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Registered User
Join Date: Dec 2014
Location: Rockport, Texas
Posts: 192
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Re: 12 bolt posi and gear cost
http://www.ebay.com/itm/GM-8-875-CHE...-/231993280796
Link to one like I mentioned. Doesn't seem to be off-brand crap to me. |
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06-27-2017, 10:54 AM
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#8 |
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Senior Member
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,832
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Re: 12 bolt posi and gear cost
Be aware that not all posi units are the same, and do some research into the strengths and weaknesses of each. Your time will be well invested. Then spend the money to get what you want. Saving money now and wishing you had spent that extra money in six months is a really bummer feeling.
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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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06-27-2017, 11:21 AM
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#9 |
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Registered User
Join Date: Jul 2016
Location: Olathe, KS
Posts: 267
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Re: 12 bolt posi and gear cost
We just had a Dana 60 rebuilt with new Yukon gears, Detroit Locker, and all the bearings. $350 for the labor. Total of $2300
By the time we got done with the brake shoes, wheel cylinders, brake drums, and all the wheel bearings, we are about $3200 in the rear axle alone. I should have gone a different direction from day one.....but the '70 is a Hen's tooth.....
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1970 GMC K2500 Dis-use is harder on a car than mis-use. |
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06-27-2017, 11:55 AM
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#10 |
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Registered User
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 2,177
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Re: 12 bolt posi and gear cost
I have 31" tires, TH350 with a 3.07, I like the ability to run down the freeway at 2700 RPM doing 70-ish. I wouldn't change it back. I had 3.73 before.
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"Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC |
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