Will an '84 10 bolt swap in place of '78 12 bolt? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Corts60** · 10-29-2012, 07:51 PM

The ONLY reason I am going to a weaker axle is because my rear end is about to grenade and I don't have the money right now to do it right. I found an '84 parts truck that has a 10 bolt for $150. So will this be a direct swap to my '78?

I need help ASAP, so thanks in advance!

-Cort

GM-power · 10-29-2012, 08:16 PM

It should swap in no problems.
Posted via Mobile Device

**Corts60** · 10-29-2012, 08:39 PM

Nice! That's what I wanted to hear, thanks!

J Knight · 10-29-2012, 09:10 PM

You will probably need to swap the yoke on the rear or get conversion u-joints, and the e-brake cables on 84 and up are run to left side only.

**Corts60** · 10-30-2012, 12:27 AM

Quote:

Originally Posted by J Knight

You will probably need to swap the yoke on the rear or get conversion u-joints, and the e-brake cables on 84 and up are run to left side only.

What is a conversion u joint? If I swap the yoke, won't that mess up the crush sleeve pre-load or something? What is the difference in the yokes?

andrewmp6 · 10-30-2012, 02:02 AM

A conversion u joint is a u joint that has two different sizes on it where a normal one is the same size on both sides.

ont_guy_38 · 10-30-2012, 07:05 AM

Ya the u joint is way easier...if you do a search on this site i'm sure you will find the number.

**Corts60** · 10-30-2012, 10:24 AM

So if the Ebrake is on the left hand side, will I not be able to hook up my Ebrake? Also, the axle I found, the guy wants $150 for it. Is that a good price for a rearend?
Posted via Mobile Device

10-29-2012, 07:51 PM	#1
Corts60 Just here to tinker Join Date: Jun 2008 Location: Holland, MI Posts: 3,697	Will an '84 10 bolt swap in place of '78 12 bolt? The ONLY reason I am going to a weaker axle is because my rear end is about to grenade and I don't have the money right now to do it right. I found an '84 parts truck that has a 10 bolt for $150. So will this be a direct swap to my '78? I need help ASAP, so thanks in advance! -Cort __________________ 78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/showthread.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 73 Chevy C20(Daily)http://67-72chevytrucks.com/vboard/s...d.php?t=852767 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(sold)

10-29-2012, 08:16 PM	#2
GM-power Registered User Join Date: Mar 2012 Location: Little Rock, Arkansas Posts: 770	Re: Will an '84 10 bolt swap in place of '78 12 bolt? It should swap in no problems. Posted via Mobile Device __________________ 1979 Sierra Classic Heavy-half 1996 Silverado x-cab "the daily"

10-29-2012, 08:39 PM	#3
Corts60 Just here to tinker Join Date: Jun 2008 Location: Holland, MI Posts: 3,697	Re: Will an '84 10 bolt swap in place of '78 12 bolt? Nice! That's what I wanted to hear, thanks! __________________ 78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/showthread.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 73 Chevy C20(Daily)http://67-72chevytrucks.com/vboard/s...d.php?t=852767 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(sold)

10-29-2012, 09:10 PM	#4
J Knight Registered User Join Date: Jun 2011 Location: Baytown TX Posts: 2,219	Re: Will an '84 10 bolt swap in place of '78 12 bolt? You will probably need to swap the yoke on the rear or get conversion u-joints, and the e-brake cables on 84 and up are run to left side only. __________________ John 82 Chevy Silverado 350ci/TH350

10-30-2012, 02:02 AM	#6
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: Will an '84 10 bolt swap in place of '78 12 bolt? A conversion u joint is a u joint that has two different sizes on it where a normal one is the same size on both sides.

10-30-2012, 07:05 AM	#7
ont_guy_38 Registered User Join Date: Jul 2007 Location: Ontario Canada Posts: 1,006	Re: Will an '84 10 bolt swap in place of '78 12 bolt? Ya the u joint is way easier...if you do a search on this site i'm sure you will find the number. __________________ 1985 C10 2004 Avalanche

10-30-2012, 10:24 AM	#8
Corts60 Just here to tinker Join Date: Jun 2008 Location: Holland, MI Posts: 3,697	Re: Will an '84 10 bolt swap in place of '78 12 bolt? So if the Ebrake is on the left hand side, will I not be able to hook up my Ebrake? Also, the axle I found, the guy wants $150 for it. Is that a good price for a rearend? Posted via Mobile Device __________________ 78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/showthread.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 73 Chevy C20(Daily)http://67-72chevytrucks.com/vboard/s...d.php?t=852767 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(sold)



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