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03-13-2018, 11:04 AM
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#1 |
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Registered User
Join Date: Jul 2004
Location: Lomita, Ca
Posts: 1,225
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which front and rear diffs came on my suburban and will these fit?
Hey guys I was wondering what diffs came from the factory on my 86 2500 4x4 suburban? I found a set of diff covers local and was wondering if they would fit.
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03-13-2018, 11:42 AM
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#2 |
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Registered User
Join Date: Jul 2011
Location: Aptos
Posts: 366
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Re: which front and rear diffs came on my suburban and will these fit?
In 86 your 3/4 ton 4x4 would have a 8 lug, 10 bolt front axle and a semi-float 14 bolt from the factory.
Neither one of those is going to fit if you have factory axles. Potentially, one of those(upper one) might fit if someone swapped a 14bff rear axle in. |
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03-18-2018, 01:26 PM
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#3 |
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Registered User
Join Date: Jan 2011
Location: Coastal NC
Posts: 276
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Re: which front and rear diffs came on my suburban and will these fit?
A lot of 3/4 ton burbs came with 14bolt full float axles. Just have to crawl underneath and see.
__________________
86 Chevrolet K20/30 Suburban - 8.1/NV4500/NP205/Dana 60/14 bolt FF, build in progress 73 Formula - 400/Doug Nash 4+1, resto on hold 86 Chevrolet K30 3+3 - 350/TH400/NP241, Air Force/Forest Service Rescue Truck, for sale 01 Ram 2500 - 5.9L Magnum, daily driver 91 BMW 325i - Chumpcar series racecar |
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03-18-2018, 10:23 PM
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#4 |
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Registered User
Join Date: Jul 2011
Location: Aptos
Posts: 366
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Re: which front and rear diffs came on my suburban and will these fit?
I have a 78 k20 burb that came with a 14bff.
It was my understanding that 4x4 burbs after 81 did not come with 14bff or a BBC. K/V 20 series only came with semi float 14 axle with a sbc or diesel. If it was a 2wd. You could get a 454 and a 14bff in one package. |
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03-19-2018, 02:07 AM
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#5 | |
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Registered User
 
Join Date: Nov 2012
Location: Los Angeles, CA
Posts: 450
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Re: which front and rear diffs came on my suburban and will these fit?
Quote:
Pull off the hubcap and if there is a big hub in middle of the axle, 14bolt full floater. No need to crawl under it.  If that is what you indeed have then somebody swapped it in there. |
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03-19-2018, 04:46 AM
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#6 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: which front and rear diffs came on my suburban and will these fit?
mine has 14b semi rear ..not a ff.....and a corp 10b front...mines 91
1st pic is semi 2nd pic is full
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver Last edited by mongocanfly; 03-19-2018 at 04:52 AM. |
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