Rear control arm measurements?

[6togo]

Anyone know what the measurements are for the rear control arms upper/lower center to center hole?
I am putting on my new adjustables and would like to set them in the stock position to begin with then tweek accordingly but i tossed the old crusty arms!!!!
Chris

 

[6togo]

Anyone?

 

[TRICKSIXPA]

I keep thinking that 19 1/4 on the lower control arm. I can check on it when there is daylight. I know when I got my HR upper adj they were already set to stock lenght. No sure what ur using.

 

[coach]

crap, if I were at the shop, I could look it up in my program. I made my arms and Paul from HR helped with the base centerline. He is at the .Com Nats, so he wont answer if you call.

 

[6togo]

I have adjustable UMI's and the ends are loose so i dont think they are set at the factory length i just wanted to be sure.
Chris

 

[FastDiesel]

i would like to know also

 

[Pronto]

How about measuring the olds ones when you take them off?

 

[6togo]

That is beacuse i dont have them like i said in the first post when i stripped the frame for coating they were taken off and thrown in the trash without thinking!
Chris

 

[Pronto]

Pulled out brand new HRs uppers looks to be 11 1/8" and lowers 19 1/4" with a quick tape measurment. That is center to center. Now if I can get them installed...

 

[6togo]

Thanks that should do the trick!
Chris

 

[TRICKSIXPA]

Confirmed the STOCK uppers are 11 1/8 and I'm pretty sure that was the lowers 19 1/4. If you don't have one go out and get a magnetic angle finder. Any hardware store sells them. After I had everything put back together I checked the angle
On the flat pat of the differential.

 

[larry33kc]

What angle is ideal?

 

[coach]

What angle is ideal?

For full race, -2 to -4 degrees depending on your launch. -2 to -1 for street use is usually ok.

Coach

 

[FastDiesel]

thanks i wanted to know also.

 

[Ramey]

UMI's lowers are 19-1/4 center to center with 2.400" bushing width. Same as factory.