what is the threshold for flipping upper control arms?

[boostmg]

I just bought a 97x. The previous owner has z71 rear springs, and bilstein 5100s with front springs at the top perch. He flipped the UCA and is running 275/65/18 tires with 1.5 spacers.

I want to remove the spacers. I plan on installing Trailblazer EXT rear springs. I want to get smaller tires. I want to level the front to match whatever the TB EXT spring ride height is.

How do i know if i should flip my UCA back to stock or keep them reversed?

 

[Matt]

If you're going back to stock height, just reverse them.

 

[boostmg]

If you're going back to stock height, just reverse them.

Thanks. And to know if I’m at stock heigh i would just measure from the ground to the fender around 32” right? Accounting for any bigger tire size i have as well

 

[Matt]

Thanks. And to know if I’m at stock heigh i would just measure from the ground to the fender around 32” right? Accounting for any bigger tire size i have as well

Should be about 32" front and 33" rear.

BTW, trailvoy forum is a dead space. All the knowledgeable guys came over here.