The Levy Racing shocks are (or at least they were when I bought them) always the same length front and rear, pin drive or regular IRS. Due to the different geometry of the pin drive suspension parts, this will not allow sufficient travel at the shock when the ride height is correct. With pin drive you should therefore either use longer shock than regular IRS, or relocate the upper mount.
The short and easy answer, ditch the levy shocks, they were never designed properly for pin drive IRS. Contact FFR to see if they still have some KONI shocks. It's zero degrees and snow, my car is under wraps, and I don't remember what the shock length was.
I do know the IRS shocks are different lengths for standard and pin drive.
Long story. Short version. Last week replaced 16" shocks w 18". World of difference. The shocks and springs now actually work as the suspension is freed up to operate as it should. Went 50 miles or so Saturday; Shirley even noticed the (radical) improvemnt in ride.:yes: "Old 3850" Setup...
A forum community dedicated to Factory Five owners and enthusiasts. Come join the discussion about performance, racing, conversions, modifications, troubleshooting and drivetrain. We discuss MK4, GTM, 818, Type 65 coupe, roadsters, and more!