No new control arms

[Jayo73]

New guy here and have been searching high and low for new lower control arms for an 83 c10. Can anybody tell me a part # or where to look anything will be better than what I'm coming up with. Autozone has them for something like 300 a peice and well sorry not happening. If I have to rebuild mine I guess thats ok I do have new ball joint for them but... Also when I search r10 lca it says they won't fit.

[tucsonjwt]

A word of caution: I got a Raybestos lower control arm and it did not have the cut out for the brake hose bracket, so one had to be hacked in.

I would try the OEM vendors like:

www.oehq.com
www.oewarehouse.com
www.gmpartsdirect.com
www.davesdiscountautoparts.com
www.rockauto.com

[Jayo73]

Thank you I will try them. Rockauto only has uppers.

[keystoneGerm]

The only company that offers lower is LMC. It's an exclusive parts according to them.

[Jayo73]

Another question I have is that all the uppers and lowers are interchagable between half, 3/4, 1 tons with the 73-87 squares right? Certainly other years included and excluded but the ball joint is the difference? I have found new lca for 3/4, 1tons so all I would need would be to change the ball joints which I already have.

[MalibuSSwagon]

Can't be too bad to rebuild the arms? New Moog bushings and ball joint is pretty cheap, just some labor to install.

I actually had a rotted out upper arm on mine and had to get a new one.

[edward61]

MOOG Lower Control Arms
Left : RK621645
Right : RK621646

[MalibuSSwagon]

http://www.moog-suspension-parts.com/moog-rk621645

Discontinued. Maybe you can find old stock somewheres

[Jayo73]

Just had a chat with moog and those are discontinued and no replacments. The reason I'm asking about the c20 arms is that rock auto has them for 57 apeice. I would b hard pressed to rebuild mine for that and alot less labor because this bushing can be a pain.

[MalibuSSwagon]

I believe the only difference is that the C20 bushings are solid steel, not rubber. Might be a little harsher ride?

[Jayo73]

Will the c20 arms bolt in if I just change out the balljoint?

[keystoneGerm]

I wish they did for $57 each, I think it'd be worth it. I just did lower ball joints, control arm bushings and sand blasted and painted. Major pain in the ass. I had to burn out the bushings. Took probably 30 minute an arm. Lots of gas.

[SCOTI]

Originally Posted by Jayo73

Another question I have is that all the uppers and lowers are interchagable between half, 3/4, 1 tons with the 73-87 squares right? Certainly other years included and excluded but the ball joint is the difference? I have found new lca for 3/4, 1tons so all I would need would be to change the ball joints which I already have.

1/2 ton a-arms are different vs 3/4 & 1-ton a-arms. Different bushings (upper/lower) & different lower BJ's (larger). You can't just swap in a 1/2 ton BJ on the lower arms as the hole is physically larger.

[Jayo73]

Thanks scoti and everybody who responded. I'm almost temped to bore the taper on the spindle to make a c20 ball joint to fit. The c20 arm will bolt up to a 1/2 ton frame?

[SCOTI]

Originally Posted by Jayo73

Thanks scoti and everybody who responded. I'm almost temped to bore the taper on the spindle to make a c20 ball joint to fit. The c20 arm will bolt up to a 1/2 ton frame?

Correct. The difference I know of is the lower BJ's being a diff size for 1/2 ton vs 3/4 & 1-ton spec arms. The lowers require the different arms (or diff approach like reaming the spindle). The upper arms will allow swapping BJ's (1/2, 3/4, 1-ton BJ's all have the same mounting bolt pattern).

3/4 & 1-ton upper arm mounting shafts are different too vs 1/2 tons (1/2" a-arm shaft studs = 1/2 ton; 9/16" studs/shafts = 3/4 & 1-ton).
*Disclaimer: I believe the larger studs are 9/16" but it's been a while since I've swapped stuff so it could be a different size.*

[Jayo73]

Sounds good thanks for your input.

[FB85C10]

so if i get a c20 lower control and ream the spindle out to receive a c20 balljoint and it will bolt in onto the stock crossmember, is that all the mods i have to do to get it to work with my truck? i have an 85 c10 and cant find lowers to replace mine.

[SCOTI]

Correct.

I have bolted 3/4 & 1-ton arms to a 1/2 ton crossmember. My dually has a 1/2 ton crossmember, 1/2 ton 67-72 upper a-arms (w/1-ton BJ's), & 1-ton lower arms.