Camaro/Firebird Torque arm design notes

[SSDiv6]

Originally Posted by Dragsinger

I am beginning construction of a 1990 Firebird in IHRA Crate Motor Stock. Looking at the bolt on suspension parts, I see that most torque arms use a "energy poly bushing" at the torque arm front. My question, since this is a dedicated drag race combination, why the poly bushing? Why not some type of rod end or solid bushing? Or, is the poly so hard deflection is not an issue? I have the same question about the lower control arms, why not solid bushings?

Thanks
Larry Woodfin - owner
Woodfin Automotive
Kilgore TX
903-985-1162 [cell]

Under NHRA rules, you are not allowed to have heim joints, just bushed. I would assume that IHRA rules are the same.