Torque Arm vs 4-Link

[cpd004]

For what it's worth, I have 225lb in the rear in my '71 Firebird. I have the older design 4 link and just recently added the R Joint links. I started out with 275lb based on someone other than RT's suggestion and though it was too harsh. I went down to 250 worrying about the 50lb drop being too much and the ride was much better-speaking strictly street car at the moment. Much better, but still thought they were a touch much. Finally down to 225 and these seem right on ride wise. I no longer the pop pop pop going over cracks in the roadway. This is what worked on my car with 275/40/18 sized tire. Taller than most probably run. An expensive journey to get to the right rates back and front. This reminds me-I need to update a for sale post!