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Rearend ID
#1426558 Mon Oct 11 2021 09:55 PM
Joined: Mar 2004
Posts: 68
4
'Bolter
Hi,

Hoping to identify what type of rearend this is, and if it's worth swapping into my '52 3 ton GMC. Pro's so far is that it's a narrow dually with the same width frame, so I could just transfer the hangers, springs and rearend over by just drilling holes...

It's a single speed dually 10 lug off a 60's or 70's GMC value van. The gear carrier has what looks to be the # 699 cast into it. Other than that I see no markings,

Thanks!

[img]https://www.stovebolt.com/ubbthread...umber/35774/filename/20211011_144119.jpg[/img]

Attached Files
20211011_144157.jpg (231.94 KB, 138 downloads)

1940 Chev, model 14-24
1952 GMC, model 9783
1953 Chev, model 1143
Re: Rearend ID
40_chevy #1426576 Tue Oct 12 2021 02:25 AM
Joined: Mar 2004
Posts: 68
4
'Bolter
After some scraping and wirewheeling I was able to also find some stamped numbers "KTBG3031"

Attached Files
20211011_191516.jpg (225.03 KB, 114 downloads)

1940 Chev, model 14-24
1952 GMC, model 9783
1953 Chev, model 1143
Re: Rearend ID
40_chevy #1426648 Tue Oct 12 2021 04:53 PM
Joined: Jun 2011
Posts: 4,241
E
'Bolter
What is the ratio? Is your ‘52 10 bolt or 6 bolt? If it matches your front axle, and everything matches up like you say, the ratio would be the determining factor, assuming it is not worn out.


Are your front hubs bolted on or pipe thread? If bolted on, you could install disc front spindles from a P30 or P3500 HD GMC front axle.

Ed

Attached Files
C8DEFC4B-6BD2-464C-9CAA-C01D12E20D5F.jpeg (494.76 KB, 106 downloads)
Last edited by EdPruss; Tue Oct 12 2021 04:56 PM.

'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Rearend ID
40_chevy #1426767 Wed Oct 13 2021 03:59 PM
Joined: Mar 2004
Posts: 68
4
'Bolter
Ed,

Haven't checked the ratio yet, but I will be if it's a descent rearend. The 3 ton has the 2 speed rear and is niether the 10 or 6. My GMC has the large 5, front and rear.

I've been keeping an eye out for the P-30 spindles for many years. They're like unicorns in my area. I think the 3500hd has a not ideal steering setup. I did find one of those about 5 years back, but they wanted 1200$ for it (just the beam / spindles)

Current thoughts are, if I use the rear in question, I wound probably use the matching front from the value van (a bolt in, drw IFS)

Attached Files
16341399889103259954328908552806.jpg (111.17 KB, 88 downloads)

1940 Chev, model 14-24
1952 GMC, model 9783
1953 Chev, model 1143
Re: Rearend ID
40_chevy #1426793 Thu Oct 14 2021 02:14 AM
Joined: Jun 2011
Posts: 4,241
E
'Bolter
40 Chevy,

So your rear is 5 lug also, that would work if they are on 7.25” circle, might have to find 19.5” wheels, slightly smaller than 20’s, but might look OK on your year truck.

The 3500 series axle has to have the tie rod behind the axle. This may be too much effort and $ for your truck, unless you are going to drive with loads extensively.

If you get that rear axle, unless you find 10 lug wheels, if you can find one 10 lug wheel, only need the bolt pattern in the center, you could lay it over your existing wheel, making sure the bolts line up perfectly or make a dummy hub to center the wheels, and drill new holes in your 5 lug wheels using a drill bushing, you could make or have made since the wheels are hubcentric.

Good luck,

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Rearend ID
40_chevy #1426853 Thu Oct 14 2021 04:39 PM
Joined: Mar 2004
Posts: 68
4
'Bolter
Ed,

I think the 19.5 will work, which would get me out of multi piece rims and bias ply tires. I don't see too many huge loads in the future either. This truck is the one my Son is interested in, so we're just getting into it. In all my time with the truck, it hasn't had any brakes. (Which was fine on the farm, in the prairies but I'm in the mountains now) Grandpa told me they were there once, but even at peak, braking was poor, and getting difficult to get parts for. I have to go thru an Inspection for this one to get plates on it again, so new tires, shocks and brakes are a must. Might as well use the opportunity to get a little more modern with it. That being said I'm hoping to keep the big GMC 6 & trans.


1940 Chev, model 14-24
1952 GMC, model 9783
1953 Chev, model 1143
Re: Rearend ID
40_chevy #1426875 Thu Oct 14 2021 08:35 PM
Joined: Mar 2004
Posts: 68
4
'Bolter
Had another look out in the rain. Could be a GM H110? Appeared to have 4.88 gears.


1940 Chev, model 14-24
1952 GMC, model 9783
1953 Chev, model 1143
Re: Rearend ID
40_chevy #1426895 Fri Oct 15 2021 01:19 AM
Joined: Jun 2011
Posts: 4,241
E
'Bolter
40 Chevy, what engine do you have now, it could be a Chevy, which GM used in most GMC trucks sold to Canada. If a GMC engine, the SN behind the starter stamped on a m@chined surface would start with the displacement, I. e. 228xxxx. If not thus, then a Chevy engine; post numbers and or pictures here and some Chevy guys will give the info.

There is a place somewhere in BC I got some P3500HD steering arms from, they might have spindles and brakes, etc., don’t need axle. Let me know if need contact info.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Rearend ID
40_chevy #1427001 Sat Oct 16 2021 05:31 AM
Joined: Mar 2004
Posts: 68
4
'Bolter
Ed,

I'll try to grab #'s tomorrow, but pretty sure this one came with a 248. If you did have contact info, I would give them a call, thanks,

Matt


1940 Chev, model 14-24
1952 GMC, model 9783
1953 Chev, model 1143

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