69 c20 camber issue

[Vortec69]

Originally Posted by MACO

Some of the CPP stuff is not that great but I am happy with the disc kit, most of the parts are GM or Moog. I just don't have time to hunt down the parts plus land is so expensive here most of the wrecking yards with older vehicles disappeared many years ago.

There ain’t many in the boneyards here left either. What is around here has been picked over and what is left is junk or the stuff you don’t want. I spent a whole day driving around looking for a 71-72 gas pedal and when I found one had to walk through a **** load of black berry briars and poison ivy take it out my self and then pay $20 bucks for the crusty thing! Then the time to clean it up and paint it. For the love of these trucks I guess

[tdangle]

did you ever get this figured out. I've run into the same thing with my 70 C20

[Vortec69]

Originally Posted by tdangle

did you ever get this figured out. I've run into the same thing with my 70 C20

I have not. Finally found a some what happy spot where it didn’t wear the tires but it is not right. I can’t seem to find an answer. I bought new lower a frames which made no difference. The only thing I haven’t tried is uppers but I don’t think there’s any difference. Do u have the answer???
Posted via Mobile Device

[pjmoreland]

PerformanceOnline.com sells this thinner spacer set for the upper control arms that might improve your situation a bit. They replace the stock spacers.

https://www.performanceonline.com/19...-Control-Arms/

[Big Kev-O]

There was another thread about this issue a few months ago and it turned out the upper arms were installed on the wrong side of the truck. Make sure the upper arm is installed with the rubber bumper toward the rear of the truck.
Posted via Mobile Device

[BAD1916]

After I rebuilt the front end on my 71 2500 suburban I used the same spacers that were on there originally. I documented how many so I would be close. After getting it back together I had the same issue with positive camber. Turned out my uppers were on the wrong side. Swapped them side to side and everything was good to go. Also installed my centerlink backwards so apparently I don’t take enough pictures during disassembly.

[Vortec69]

Well I have checked my uppers and the rubber is to the rear. All the spacers have been removed and have 2 shims under 1 stud and 1 on the other. Same on both sides. Can’t get camber any closer. Not wearing the tires but you have to kinda get use to driving it because it doesn’t want to come back straight on its own. Can’t get the caster right with out messing up the camber. I’ve tried everything but different upper a arms , but I think it’s a waste of time. I did a 1/2 ton before and didn’t have 1 issue, but this one has me baffled. All diner parts came from a 72 c20. What else is there? I can’t be the only one this has happened too. I have heard a rumor of different width frames. Anyone else know anything about that?
Posted via Mobile Device

[tdangle]

I'm following as it looks like I'm going to run into the same issue. Would love someone to measure from center of ball joint to center of shaft on both upper and lower a-arms to compare with mine. I can't imagine that the frames are different. I think something is getting overlooked.

[Boog]

There are numerous threads covering alignment issues down in the Suspension forum. I feel sure you will find your answers there.
Like this one.
https://67-72chevytrucks.com/vboard/...0+camber+issue

[Caddylackn]

Maybe you have big block heavy duty coil springs in there. With a lighter small block installed, that could give you a bit of lift and a camber increase.

[Vortec69]

Originally Posted by Caddylackn

Maybe you have big block heavy duty coil springs in there. With a lighter small block installed, that could give you a bit of lift and a camber increase.

It has a vortec 454 with big block springs.
Posted via Mobile Device

[Vortec69]

I just realized that I said there was a camber issue. I need to correct that with caster. I can’t get the caster correct without messing up the camber. I’m sure I’ll get flack for saying this, but I’ve considered grinding the back side of the control arm shaft flat to get more adjustment. I’m not doing that until I know for sure the upper control arm is the same length. That’s the only thing left to try.
Posted via Mobile Device

[SCOTI]

Originally Posted by Vortec69

I just realized that I said there was a camber issue. I need to correct that with caster. I can’t get the caster correct without messing up the camber. I’m sure I’ll get flack for saying this, but I’ve considered grinding the back side of the control arm shaft flat to get more adjustment. I’m not doing that until I know for sure the upper control arm is the same length. That’s the only thing left to try.
Posted via Mobile Device

You can also do the 'Caster Mod'. It will increase the Caster w/o requiring the removal/addition of shims. By this I mean it would add Caster to the current set-up. That adjustment itself might require re-setting the alignment: http://67-72chevytrucks.com/vboard/s...ght=caster+mod

I did this on my Squarebody dually & achieved pretty decent Caster. At a later date, I then changed the lower arms for aftermarket arms (air-bag suspension) that pushed them forward an additional .250" for a final Caster yield of 6.9/7.4.

[Vortec69]

Hey thanks for that link ! That’s some good reading! I’ll definitely consider this!
Posted via Mobile Device

[SCOTI]

Originally Posted by Vortec69

Hey thanks for that link ! That’s some good reading! I’ll definitely consider this!
Posted via Mobile Device

No problem. it works too. My first attempt moved the modified stock HD lower arms forward .750" using that caster Mod. The aftermarket arms were 1" forward (as built into the arm) & utilized standard shaft spacing I believe.