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02-11-2004, 11:41 PM | #1 |
Registered User
Join Date: Mar 2002
Location: Baton Rouge, Louisiana
Posts: 71
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3/4 ton front end parts on a 1/2 ton?
Can't figure this one out. I'm rebuilding the front end on my '72 1/2 ton GMC Suburban. I know it's a 1/2 ton because it sayes 1500 Super Custom on the side. Anyway, I bought new parts(TRW) for a 1/2 ton from Advance Auto. When I started comparing the new parts to the old parts, most of them didn't match. So I take the parts back to Advance and the parts guy asks me if I'm sure I have a 1/2 ton. I told him yes, but we decided to take a look at some 3/4 ton parts and they matched with the old parts. I'm pretty sure all of the old parts were original. It has a little over 100,000 miles, and the upper ball joints were riveted on the control arm. Anyone else ever run into this?
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02-12-2004, 12:09 AM | #2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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How many lugs do your wheels have?
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02-12-2004, 08:29 AM | #3 |
Registered User
Join Date: Mar 2002
Location: Baton Rouge, Louisiana
Posts: 71
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5 lug discs.
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02-12-2004, 09:50 AM | #4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Well, it wouldn't be the first time Advance Auto has things wrong in there computers for these trucks....try getting U-joints for a one ton from them, you'll pull your hair out.
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02-12-2004, 10:29 AM | #5 |
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Join Date: Mar 2002
Location: Baton Rouge, Louisiana
Posts: 71
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Advance had the part #'s correct. I checked Moog parts at O'Reilly and part #'s with several of the vendors on this board, they all gave the same part #'s as Advance and O'Reilly. Anyone else have any theories? I'll try to post some pics later.
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02-12-2004, 03:18 PM | #6 |
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Join Date: Apr 2003
Location: NB
Posts: 3,367
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Keep us posted!
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1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD |
02-12-2004, 04:53 PM | #7 |
Senior Member
Join Date: Sep 2001
Location: Seattle, WA, USA
Posts: 5,817
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Sounds like someone did a 3/4 ton swap of both sets of control arms....but the ball joints shouldn't fit the 5-lug disks. They're literally too big. Wow...that' a puzzle.
Are the tie rods, pitman, drag link, idler, and lower ball joints all 3/4 ton?
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'69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA. |
02-12-2004, 05:51 PM | #8 |
Registered User
Join Date: Mar 2002
Location: Baton Rouge, Louisiana
Posts: 71
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The pitman arm and idler arm are the same for 1/2 ton and 3/4 ton trucks. The tie rods are different which means the spindles and drag link are different. I think COBALT is correct, the only way this is possible is if someone replaced all 4 control arms along with upper contorl arm shafts (lower control arm shafts are the same for 1/2 and 3/4 ton), spindles, tie rods, and drag link from a 3/4 ton. Either that or it's some kind of factory freak. One thing of interest: on the Parts America website, if you look up tie rod ends for a 1/2 ton, they list two different sets of part #'s denoted by "1st design" and "2nd design". http://www.partsamerica.com/SelectPa...river%2C+Inner
The part #'s for "2nd design" are the same as for a 3/4 ton. Maybe this is a clue. |
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