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05-25-2013, 03:50 PM
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#1 |
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Registered User
 
Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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68 rear change
I have a 68 c10 project truck , its got " one wheel peel " , and 273 gears , I have to upgrade , its been lowered 3-5 , got discs in front , and is getting an ly6 and turbo 350 , whats the best , easiest , cheapest , way , id like to keep the 6 on 5.5 , so gears and a posi are my asumption , who to get them from , truck pinions are longer i think so i cant change to car gears , ive got an 69 chevelle 12 bolt with 331 gears but no psi , i dont think they will interchange , any help would be apreciated
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05-25-2013, 07:15 PM
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#2 |
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Registered User
Join Date: Oct 2008
Location: great falls, mt
Posts: 82
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Re: 68 rear change
i have similar question... though my 68 c10 is longbox and is 3.73's... need something stronger but don't want a heavy 14bolt, or to weld all the stuff on there, though that might not be avoidable ..............
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05-25-2013, 07:16 PM
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#3 |
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Registered User
Join Date: Oct 2008
Location: great falls, mt
Posts: 82
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Re: 68 rear change
actually i was thought you were talking swapping the whole rear, sorry if i hijacked your thread
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05-25-2013, 07:46 PM
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#4 |
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Registered User
Join Date: Jun 2012
Posts: 1,089
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Re: 68 rear change
I bought a True trac locker and new gears from Summit, also bought a master rebuild kit and went clear through the rear end.
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05-25-2013, 08:58 PM
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#5 |
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Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: 68 rear change
2.73 gears... really? Thoses were not stock in 68. Since you never stated what ratio you wanted its hard to give specific suggestions. But a new posi carrier to go along with new gears and bearings would be the best way.
If you need a stronger axle there were the big block/manual Spicer/Dana 60 axles in C10s (68,69 and 70 for 6 lug). These were 3.54 though and you would probably need to regear it.
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05-25-2013, 09:19 PM
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#6 | ||||
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"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,971
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Re: 68 rear change
I would advise against using any used diffs and gearsets. Get a new locker or an Eaton posi-traction with a new set of gears to match. If you cheap out on the gears... you'll be rewarded with a noticeable "whine".
Gary
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05-25-2013, 09:45 PM
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#7 |
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Registered User
Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
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Re: 68 rear change
yes 273's it was a 305 with a powerglide , think id like 342s i know they were very comon later in the 80s trucks , i would switch the whole rear but want to keep the 6 0n 5.5 , just got ralley rims with the patern , is the stock ratio listed in the glove box ?
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