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11-02-2013, 06:22 PM
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#1 |
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Registered User
Join Date: Aug 2011
Location: Hattiesburg, MS
Posts: 109
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Rear differential swap
I have an 85 c10 with a 10 bolt. The rear is making noise so I need to replace gearset in it. I have a 98 2500 2wd truck I bought that I plan on pulling vortec from and sticking in the 85 with fuel injection and a LT4 hotcam upgrade.
My question is will the rear differential from the 98 fit in the 85? I know I will probably need axles but the 85 is peg leg and I believe the 98 is posi or limited slip so it would be a free unit basically. Just need to know if it will fit and what it will take to make it work?
__________________
2006 Chevy Silverado 3500(Duaramax/Allison) - DD 1997 Honda Civic - Work Beater 1981 Chevy Malibu - Race Car 1959 Chevy Truck - Project http://67-72chevytrucks.com/vboard/s...d.php?t=481442 2006 Honda Accord - Wife's ride |
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11-02-2013, 08:07 PM
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#2 |
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Registered User
Join Date: Jul 2007
Location: Ontario Canada
Posts: 1,006
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Re: Rear differential swap
You need special conversion bearings to put that in your housing and also 30 spline axles to fit your housing. You would be better off welding new perches on the 98 rear end and installing the complete thing. It is about an inch wider if that isn't an issue.
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 1985 C10 2004 Avalanche |
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11-02-2013, 08:17 PM
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#3 |
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Registered User
Join Date: Aug 2011
Location: Hattiesburg, MS
Posts: 109
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Re: Rear differential swap
the 98 is a 3/4 ton with 8 lug.
__________________
2006 Chevy Silverado 3500(Duaramax/Allison) - DD 1997 Honda Civic - Work Beater 1981 Chevy Malibu - Race Car 1959 Chevy Truck - Project http://67-72chevytrucks.com/vboard/s...d.php?t=481442 2006 Honda Accord - Wife's ride |
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11-02-2013, 10:08 PM
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#4 |
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Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: Rear differential swap
Pinion yokes may be different then.
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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11-03-2013, 07:25 AM
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#5 |
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Registered User
Join Date: Jul 2007
Location: Ontario Canada
Posts: 1,006
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Re: Rear differential swap
The 454 ss had a 14 bolt with 5x5, maybe the axles would fit ?
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1985 C10 2004 Avalanche |
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11-03-2013, 08:32 AM
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#6 |
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Registered User
Join Date: Dec 2006
Location: North Carolina
Posts: 308
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Re: Rear differential swap
good luck finding the 5x5 14 bolt sf axles if you have a 14semi floater. your a lot better off finding the correct unit. it will be a lot cheaper and nicer in the long run
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1985  1500 454, 4l80e, 12 bolt, 5/6 drop, 20s
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