Lower ball joint help??

[jarede525]

I need to replace all my balljoints. (with moog)

I got the uppers from Oreilly's no problem. But there are apparently two options for the lowers?? Different sizes.

They didn't know how to tell the difference... go figure ... But I know someone on here will!!

How do I tell which size lower ball joints I need?

 

[Horns]

I would just take the old one in and show them which one you need.

Sent from my busted Desire using Tapatalk.

 

[Swims350]

never knew they had 2 sizes, I was thinking ones press fit and the other bolts in.

regardless have them pull both and look/compare, I don't think anybody can tell you what you have, you'd have to pull one and match it up.

 

[91Bluestreak]

Theres pressed in and bolt in, then theres two depending on if its a 1500 or a 2500-3500. 95 seems to be when they went to press and bolt in 94 and older.

 

[dcZ71]

I need to replace all my balljoints. (with moog)

I got the uppers from Oreilly's no problem. But there are apparently two options for the lowers?? Different sizes.

They didn't know how to tell the difference... go figure ... But I know someone on here will!!

How do I tell which size lower ball joints I need?

It just depends on if you have a stamped or forged steel lower control arm.

Forged you need the 47.89 mm.
and stamped you need the 45.79 mm.

Most ive seen are stamped.

This is a stamped steel control arm...

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This is Forged steel Control arm...

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[jarede525]

It just depends on if you have a stamped or forged steel lower control arm.

Forged you need the 47.89 mm.
and stamped you need the 45.79 mm.

Most ive seen are stamped.

Thank you!! I have a stamped. My dad's 3500 has a forged

 

[Horns]

Did any of the half tons come with forged LCA's? I don't think I've ever seen one.

 

[dcZ71]

Did any of the half tons come with forged LCA's? I don't think I've ever seen one.

Never seen one either but the part stores always list another for it so it confuses the hell out of people. who knows maybe it exists,

 

[Bdaly89]

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I seem to have the same issue I've gotten two that are about an 1/8 to large for the hole and I double checked with calipers with the old one. so i guess i need the 45 mm ones mine looks like stamped steel with a forged end the ball joint was pressed into

 

[Schurkey]

There are three lower control arm styles for the 4WD GMT400 trucks.

1. Fully-stamped control arm, bolt-in ball joint. Original joints are riveted, gotta cut the rivets to get the originals out.
Photo shows arm with ball joint removed.

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2. Partially-stamped, partially-forged arm. Ball joint presses into forged section. I've never actually seen one of these, but I've seen photos. Looks to me like you've got this style.

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3. Fully-forged control arm. Ball joint of a different size than #2 presses into the arm.

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No matter what style arm you have...you probably want to install fresh control arm bushing in the other end.