Upper a arm length I'm lost?????

[jsf74]

How in the world do I figure out what upper a arms to order. Is there a way to measure or a formula to use to get my lengths. I had some around the shop to get me on the track but my front is so out of wack I'm pushing like a truck. Sorry if this is a dumb question but theirs about a million options. I have a metric impressive mod with pinto spindles and nova lowers.

[jsf74]

Right now here's what I got.

Lf camber 5.75. Rf camber -3.25
Lf caster 6.5+. Rf caster 10.5 +

[washeduptoo]

Have you been able to contact Don about it? What lengths tubes do you have now?

[jsf74]

I called awile back but not related to this issue.they dont build much metric stuff and this car was originally designed with metric spindles but im now running pintos so I'm kind of in the dark here. There not the adj ones, there solid with the cross shaft. The lf is 10 and the rf is 8.5. Neither are offset.

[washeduptoo]

I would give Jumper a call, he can probably tell you what you need. You running spacers or washers on the cross shaft?

[not clamped up]

Right now here's what I got.

Lf camber 5.75. Rf camber -3.25
Lf caster 6.5+. Rf caster 10.5 +

the length of you a frames are close,LF is a little to much but looking at your caster numbers I think it will take 1 1/4 offsets if my wore out memory serves me right...and that wasn't on a impressive so I could be wrong.

[jsf74]

I'm running a couple of washer on the lf just because the style of shaft hits my mounts on the chassis. I tried to mount everything straight up just to see what I had. I'm gonna call jumper in a few and see if I can tap his brain a bit. Thanks everyone so far.

[jsf74]

Talked to jumper and I got some insight. I guess with my caster being so far off it's not wanting to turn. That explains my tight condition. He suggested the adj a arms with the cross shaft 9.25 lf and 7.75 rf. No offset straight up. Anyone have a used set laying around or any other suggestions?

[rg59]

I'd call Brian Worley Racecars, if I'm not mistaken this is his old car. He used Pole Position adjustable uppers on it i think. Here is his number. 573-543-5030 home / 573-883-6768 cell and cell dont work at home
(the speedway one's you have a link to in your other post are weak. the cross shafts break super easy out where the heim bolts to the cross shaft. We had those on a jet mod and if you touched wheels at all, they folded up. I believe the pole positions have 3/4" heims and are twice as strong)
Good Luck

[jsf74]

Ive been in contact with Brian and he's been very helpful. The issue is the car was originally built with metric spindles and it now has pinto stuff and the pick up points are different. I've worked this morning on the lf and it looks like my arm is a bit too short. My caster is better now at +2 but my camber is at -2 so I'm a little off. Not sure what affect this will have on the car. The rf is going to take more than shims to fix. Going to order something this weekend. I could use a 9.25 lf a arm with .5+ offset if someone has one.