Edelbrock Pro- Touring Suspension Kit

[MYFINE79]

I completed the installation of the Edelbrock Pro touring Suspension kit. It put Eibach lowering springs front & rear, new Edelbrock shocks front & rear, new rear upper & lower trailing arms, & new sway bars front & rear. This is all installed on my 1979 Pontiac GrandPrix SJ.
I now have a problem that was not there before. The left rear of the car sits 3/4 inch lower than the right. Has anyone seen this before? Everything on the car frame etc. looks good. Anyone got any ideas as to what would cause this and how do I fix it?

Willie

 

[pontiacgp]

body mount bushings and frame....I had the same problem with my GP even new eibach springs and afco shocks and still it sat lower on the left rear. I replaced the frame with a boxed and upgraded frame and new body mount bushings and it sits even now

 

[MYFINE79]

I disassembled everything, and reinspected the frame, upper spring perches, & everything looks good. I don't think I have a problem with the frame. Also checked the body mount bushings & they also look in good shape. I put everything back together & did some detailed ride height measurements. I found that both the left front & rear of the car sits 1/2 inch low.
I have now installed a spring spacer 1/2 inch. at the left rear & it's almost level. Waiting for 2 spring shims for the front. Once there in the ride height should be equal, front and back.

 

[pontiacgp]

when you measured did you check the tire pressures and measure the frame from a level surface?