Do I need trailing arms on my custom IRS chassis?

[214Chevy]

Originally Posted by dave96dcm

I'm under the understanding that any "arm" that is parallel to the axle and connects the spindle to the frame above the axle centerline is a upper control arm, if it is below the axle centerline it's a lower control arm, if it is in front of or behind the axle centerline and is for controlling toe it is a tie rod "or toe link". If it is perpendicular to the axle centerline it is a trailing arm or "swing arm". That could also be upper or lower. Shape/size/number of attachment points don't matter, that's what it would be called. Or at least from my experience.

Sounds good to me Dave. Hey, no arguing from me. What you've just stated to me sounds very true and educational. All I know is my IRS will not have trailing arms. Now, I did speak to my builder yesterday and he said that they changed some things up. I doubt he may have added trailing arms in that change, but we'll see. From when I say the initial setup back in February, it didn't and wasn't getting any control arms.