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#1 |
Chris
Join Date: Nov 2004
Location: Monaville, WV
Posts: 3,737
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88-98 rear end fit in an 84?
My dad has an 84 c10 with a 2.72 setup and a good 350 and 350 trans. now and we've been having no luck with one for his truck. I got an 88 k1500 and found a junkyard with alot of 88-98 trucks 2 and 4wd.
So will a 88+ 2wd fit in his truck? as far as bolt in goes. Like will his driveshaft and leaf springs bolt to it? If we'd have to change brakes/line or wheel cylinders that be fine too.
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Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454 |
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#2 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: 88-98 rear end fit in an 84?
You have to move the shock and leaf mount perches. The 88+ trucks have a wider width between the frame rails.
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#3 |
Senior Member
![]() Join Date: Jul 2009
Location: Hayden, Al.
Posts: 4,148
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Re: 88-98 rear end fit in an 84?
I've actually done this and gchemist is right. You will have to cut the shock mount brackets and the leaf spring perches off of the 88 up rearend and move them to the appropriate location and reweld them into place. It's not very complicated, but a bit time consuming. Just remember that you need to drain the rearend fluid out before you start cutting and welding on it. The soft to hard brake line is the same thread pitch as your existing one, so you just have to use the lines and soft line off the newer rear. I did have to move the hard lines from side to side so the soft line was in the same place as the original soft line, but that took about 5 minutes.
Some of the advantages to going to the newer rearend is the availability of the actual rearend, the price of related parts, the 30 spline axles, the drum brakes are a bit larger, and the width is about a 1/2 wider on each side which makes the wheels sit more evenly front to rear. Good Luck!!! Last edited by nlped; 11-24-2009 at 11:45 PM. |
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#4 |
Chris
Join Date: Nov 2004
Location: Monaville, WV
Posts: 3,737
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Re: 88-98 rear end fit in an 84?
lol never mind then, I just thought maybe it be a bolt in deal.
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Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454 |
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#5 |
Chris
Join Date: Nov 2004
Location: Monaville, WV
Posts: 3,737
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Re: 88-98 rear end fit in an 84?
will the guts fit inside the 84 rearend from an 88 plus?
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Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454 |
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#6 |
Registered User
Join Date: Mar 2009
Location: Midland, Tx
Posts: 418
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Re: 88-98 rear end fit in an 84?
Yes
I wouldn't bother with them though.
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1972 GMC C10 Last edited by Manbearpig; 11-28-2009 at 11:36 PM. |
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#7 |
Chris
Join Date: Nov 2004
Location: Monaville, WV
Posts: 3,737
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Re: 88-98 rear end fit in an 84?
why not it's cheaper then buying some from summit and easier to find then the gear ratio wanted for the 84 truck
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Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454 |
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#8 |
Registered User
Join Date: Mar 2009
Location: Midland, Tx
Posts: 418
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Re: 88-98 rear end fit in an 84?
Well are you going for the open rear or the G80 locker?
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1972 GMC C10 |
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#9 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: 88-98 rear end fit in an 84?
The spline count on the axles changed so your 28-spline 84 vintage axles would be too small to engage the 88-up 30-spline carrier.
The gears will install into the older 8-1/2" 10-bolt though. Most yards sell ring & pinion only fairly cheap. Mine goes for $42 for stuff with more than 30k on them.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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#10 |
Registered User
Join Date: Mar 2009
Location: Midland, Tx
Posts: 418
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Re: 88-98 rear end fit in an 84?
I was assuming he would grab the axles too
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1972 GMC C10 |
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#11 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: 88-98 rear end fit in an 84?
He was talking about putting the guts from the 88-up housing into the 84 housing so the axles from the 88-up are too long to fit to allow the use the 88-up carrier.
Custom length axles would fix that but they cost enough to make the spring perch & shock mount swap worth the effort to just use the 88-up rear end intact.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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#12 |
Chris
Join Date: Nov 2004
Location: Monaville, WV
Posts: 3,737
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Re: 88-98 rear end fit in an 84?
aaaahhhh that's the info I was looking for if the axles would be the same or if the splines were the same.
I was going to go open or posi or locker anything as long as it was a better ratio then 2.72's I would have tried to reuse the axles from the 84 if they were the same, if not I would have asked about the 88+ but knowing they are longer, I'll hold out for an older rearend from 73-87 or find one and get it's guts, or buy a new ring and pinion and use my carrier with it's locker.
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Chris GIT R DONE!!!!!! Check out all our rides, http://www.cardomain.com/id/benwa454 |
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#13 |
Registered User
Join Date: Mar 2009
Location: Midland, Tx
Posts: 418
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Re: 88-98 rear end fit in an 84?
Ahh hell didn't know that
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1972 GMC C10 |
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