I noticed this ebay auction and am wondering if you should box the upper control arms...

I think I read somewhere that is is bad but I dont remember....

http://cgi.ebay.com/ebaymotors/GM-UPPER-LOWER-REAR-CONTROL-ARMS-BOXED-CHEVELLE-NR_W0QQcmdZViewItemQQcategoryZ34200QQihZ025QQitemZ 380018921026QQrdZ1QQsspagenameZWDVW

I dont think it bad,just useless.They are so short and stout they really dont bend or twist.Waste of time in my opinion.

It is bad... the way the suspension was designed, the upper arms are supposed to twist.

Making them more rigid increases bind and resistance through its travel.

thats what I thought...

I read that here like a year ago and it made allot of sense...

I wont be boxing my uppers then...just the lowers...

Do you mind if I jump on this thread? I am thinking of boxing my lowers while I have them off the car. anyone have the "how to's"?

Do you mind if I jump on this thread? I am thinking of boxing my lowers while I have them off the car. anyone have the "how to's"?


This should help.

How to Box Rear Lower Rear Control Arms (http://www.leverfamilysite.com/Boxing_Lower_Control_Arms.htm)

Sway Bar Hole Spacing (http://www.leverfamilysite.com/Sway_Bar_Hole_Spacing.htm)
Bushing hole center to center dimension (http://www.leverfamilysite.com/Rear_Control_Arm_Bushing_Dimensions.htm)

http://www.chevelles.com/techref/ftecref16.html

I boxed my lowers only.