67-72 vs 73-87 lower control arms

[dubdeuce80]

are they any different? i know that the crossmembers are interchangeable, but are the lca's interchangeable? i bought some lower bag brackets that were said to be made for 67-87 c10's, but when i got them, they didn't line up at all on my control arms, they were short about 1". here is the ebay link: http://cgi.ebay.com/ebaymotors/ws/eB...m=330264835054

[bagged69c10]

I would think they would work. You should find out soon cuz the guy you bought them from frequents this forum.

[hotrodhomi]

Originally Posted by dubdeuce80

are they any different? i know that the crossmembers are interchangeable, but are the lca's interchangeable? i bought some lower bag brackets that were said to be made for 67-87 c10's, but when i got them, they didn't line up at all on my control arms, they were short about 1". here is the ebay link: http://cgi.ebay.com/ebaymotors/ws/eB...m=330264835054

I'm curious as to why you would use a plate instead of a cup?

[scotts62]

Either or, they are similar concept just to keep the bag from rubbing. I would use the plate verses the cup myself, it looks cleaner and bolts to the control arm. But thats just my opinion

[jlaird]

hey dubdeuce80,

I'm who you bought those plates from. I'm also curious as why they didn't fit. You are the first I've run into this issue with. Whatever I can do to help just let me know.

josh

[bagged69c10]

There has been lots of talk about that subject. The plate wont let it go as low. So Ive heard. Other than that theres nothing wrong with it.

[jlaird]

Originally Posted by bagged69c10

There has been lots of talk about that subject. The plate wont let it go as low. So Ive heard. Other than that theres nothing wrong with it.

only a .25" difference from the lowest you can go with a cup without rubbing.

[scotts62]

Yea knew it wasnt much, depending how my truck sets i may use 8'' pipe and modify lower arm to get the stance i want

[jlaird]

Originally Posted by scotts62

Yea knew it wasnt much, depending how my truck sets i may use 8'' pipe and modify lower arm to get the stance i want

i've got some pictures in my build thread of modified lowered arms(cut pocket for bag) if you're interested

[scotts62]

Originally Posted by jlaird

i've got some pictures in my build thread of modified lowered arms(cut pocket for bag) if you're interested

Yea man definatly, Thanks

[Anthony Fremont]

Originally Posted by jlaird

only a .25" difference from the lowest you can go with a cup without rubbing.

Not to hijack, but will these plates work with a '66?

[jlaird]

Originally Posted by Anthony Fremont

Not to hijack, but will these plates work with a '66?

I'm not 100% sure. I've had people with that year range purchase them, saying if they don't work, they could return them. Never heard back...

[dubdeuce80]

Originally Posted by jlaird

hey dubdeuce80,

I'm who you bought those plates from. I'm also curious as why they didn't fit. You are the first I've run into this issue with. Whatever I can do to help just let me know.

josh

cool, thanks for the plates and awesome customer service. here are some pictures of them with the sway bar holes lined up. hopefully i don't have 3/4 ton lcas or something (yes i know they are extremely rusty, they've sat through quite a few thunderstorms, but they will be POR15'd along with new drilled/slotted rotors soon!)

this sides fine...


but not so much on this side

Originally Posted by bagged69c10

There has been lots of talk about that subject. The plate wont let it go as low. So Ive heard. Other than that theres nothing wrong with it.

i'll be doing some heavy modifications to the crossmember anyways, so i'll be raising where the upper plate mounts while i'm at it, similar to the red rocker i believe it was

[jlaird]

hmmm, somthing looks strange, but can't really tell by the angle of those pics. That indentation in the plates should be where the shock mount is. They should be positioned like this pic.

[joe231]

can you get a pic with out the plate on your lower arms?
I also noticed jlaird has a pair of lower arms and plates for sale on ebay,
maybe you guys could work out a swap if your arms won't work.
here is a LINKY

[LowSmoothCool]

the control arms are the same from 63-87 only thing that changed are the ball joints. As for plate vs cup on our standard cool ride we use a lower cup style bracket and on our tubular arms we use a flat plate....

[joe231]

Originally Posted by LowSmoothCool

the control arms are the same from 63-87 only thing that changed are the ball joints.

if you look at the pics something is different.............

[SCOTI]

Originally Posted by LowSmoothCool

the control arms are the same from 63-87 only thing that changed are the ball joints. As for plate vs cup on our standard cool ride we use a lower cup style bracket and on our tubular arms we use a flat plate....

Correction . . ..... BJ's & bushing style/mount.

[dubdeuce80]

well since we never did figure out what the problem was, i decided to pick up some '69 lcas...except it kinda came with the rest of the truck

i swapped out the suspension that was in it (6 lug) for my old one. i'm gonna clean up the lca's from this '69 and use those since the plates i bought work with them, gonna be fun

[panhandler62]

Your lower arms do look slightly different, but that could just be the pictures.

I have a set of 3/4 ton control arms off an 84. When I get home I will have a look at them and see if that clears anything up.

[dubdeuce80]

alright here are a few more pics...



lined up via sway bar holes:



lined up via the edge next to the shock mount:



lined up via the edges:



and the gap left underneath:

[aggie91]

dubdeuce80 - Do you know the exact year of the LCA's that you have??

[joe231]

love those wheels!

[rddiaz]

Whatever happened to this problem with the plates? did it ever get resolved?I got an 86 SWB and I have the same problem, plates just do not fit. I wish I would of known of this before I bought them, but it does say on ebay it will fit 67-87 LCA's? I was hoping I would get done this weekend!!!

[dubdeuce80]

like i said in the above post, i picked up a '69, and both the upper and lowers are completely different than the ones on my '80. once i get the balljoints removed (probably sometime this weekend) i will take a side by side picture of both lowers