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WVZR-1 · 02-25-2014

I checked two springs I have here, a '91 removed at 16K from a ZR-1 with the "green ink" and a code of FHA with the molded pad as in Mike's image. I have another from a '93 that is assembled with the riveted on metal reinforcement and the 1 1/4" square pedestal cushion like I believe all '92+ cars are assembled with and they both have the same FHA code. That tells me the spring rate is the same and if there are differences in any of the publicized specifications then the assembly procedure at the control arm ends is responsible for that variance.

Mike - What are the actual codes stamped/molded/branded in your two springs?

The code can be checked from underneath easily, it should be maybe 2 - 4" inboard of the control arm contact area.

02-25-2014	#22
WVZR-1 Join Date: Oct 2004 Posts: 1,884	Re: Transverse leaf spring question I checked two springs I have here, a '91 removed at 16K from a ZR-1 with the "green ink" and a code of FHA with the molded pad as in Mike's image. I have another from a '93 that is assembled with the riveted on metal reinforcement and the 1 1/4" square pedestal cushion like I believe all '92+ cars are assembled with and they both have the same FHA code. That tells me the spring rate is the same and if there are differences in any of the publicized specifications then the assembly procedure at the control arm ends is responsible for that variance. Mike - What are the actual codes stamped/molded/branded in your two springs? The code can be checked from underneath easily, it should be maybe 2 - 4" inboard of the control arm contact area.