Rear diff u joint??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hemihead · 07-17-2009, 07:48 PM

I just had new u joints pressed in and in looks the the rear u joint has two different sized hubs The one that fits into the differential yoke is smaller than than the drive shaft hubs.

Could this be right or do I have an odd ball drive shaft mixed up with my 12-bolt diff

?

JCA1972 · 07-17-2009, 09:21 PM

Quote:

Originally Posted by hemihead

I just had new u joints pressed in and in looks the the rear u joint has two different sized hubs The one that fits into the differential yoke is smaller than than the drive shaft hubs.

Could this be right or do I have an odd ball drive shaft mixed up with my 12-bolt diff

?

I changed mine out last week and they were the same size.

hemihead · 07-18-2009, 10:54 AM

Any other smart mechanics out there, I wonder if something was scabbed together by the PO???

Blazer1970 · 07-18-2009, 05:46 PM

Something has been changed from stock. You have a conversion joint in there which did not come that way from the factory. Either the driveshaft or the rear end has been swapped out, probably for later model stuff.

hemihead · 07-18-2009, 07:40 PM

Quote:

Originally Posted by Blazer1970

Something has been changed from stock. You have a conversion joint in there which did not come that way from the factory. Either the driveshaft or the rear end has been swapped out, probably for later model stuff.

likely the drive shaft, so can a guy purchase these odd ball u joints?

**53burb** · 07-18-2009, 11:30 PM

NAPA has the conversion u-joints......

07-17-2009, 07:48 PM	#1
hemihead Registered User Join Date: Mar 2007 Location: Estevan, Sask, Canada Posts: 185	Rear diff u joint??? I just had new u joints pressed in and in looks the the rear u joint has two different sized hubs The one that fits into the differential yoke is smaller than than the drive shaft hubs. Could this be right or do I have an odd ball drive shaft mixed up with my 12-bolt diff? __________________ 1967 SWB C-10, BBC 454, T400, 3.73 posi, 20" Coys 1972 K5 Blazer, SBC 400, 4 spd, 3.73, 6" lift, 35" mud grapplers 2011 Sierra Denali HD, 6.6 L Duramax, RBP 96R rims, leveled and Nitto trail grapplers, 2009 Acura MDX

07-18-2009, 10:54 AM	#3
hemihead Registered User Join Date: Mar 2007 Location: Estevan, Sask, Canada Posts: 185	Re: Rear diff u joint??? Any other smart mechanics out there, I wonder if something was scabbed together by the PO??? __________________ 1967 SWB C-10, BBC 454, T400, 3.73 posi, 20" Coys 1972 K5 Blazer, SBC 400, 4 spd, 3.73, 6" lift, 35" mud grapplers 2011 Sierra Denali HD, 6.6 L Duramax, RBP 96R rims, leveled and Nitto trail grapplers, 2009 Acura MDX

07-18-2009, 05:46 PM	#4
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	Re: Rear diff u joint??? Something has been changed from stock. You have a conversion joint in there which did not come that way from the factory. Either the driveshaft or the rear end has been swapped out, probably for later model stuff. __________________ Tim

07-18-2009, 11:30 PM	#6
53burb Senior Member Join Date: May 2004 Location: Queen Creek, AZ Posts: 1,010	Re: Rear diff u joint??? NAPA has the conversion u-joints......



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