Upper A-Arm Question

[Keith B.]

Is it possible to switch the upper A arms of the front suspension. If this would happen would the spindle line up or what would it do to the front end.

Thanks

Keith

[Dick W.]

Re: Upper A-Arm Question

It will be very obvious if they are switched.

[Chuck S.]

Re: Upper A-Arm Question

What happened, Keith, did you get your control arms mixed up?

Actually, no, they should not be interchanged...there are two different part numbers; one left hand, one right hand. If they could be interchanged, GM wouldn't have been stocking two part numbers all those years.

As to what happens to the spindle if the wrong control arm is used, I don't know. But, if you want to know how to identify the control arms without obvious stamped part numbers, it appears that the front edge of the control arm has a slightly greater angle (to the rear) than the rear of the control arm has to the front. The front edge of the control arm also has a slight "re-curve" right at the ball joint that is not evident at the rear edge of the control arm.

Clear as mud?...Probably right.