Swift Spring rates
#1
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Hi, I'm tying to get rid of some of the harshness in the rear of my 68 Chevelle convertible. I have Vari shock coilovers at all 4 corners 12" spring w 5.25" travel. 450 lbs fronts 200 lbs rear. I'm ok with the front of the car it's the rear end that I'd like to soften.
So my question is which spring rate. I'm going with Swift 12" progressive springs, my choice is either 150/400 lbs or 200/500 lbs. About a 3500 lbs car.
Any imput would be great. Thanks, Tony
So my question is which spring rate. I'm going with Swift 12" progressive springs, my choice is either 150/400 lbs or 200/500 lbs. About a 3500 lbs car.
Any imput would be great. Thanks, Tony
#2
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I have a 3,600’ish poud car with 200-300 inch lb progressives on the rear and I dig it. The fronts are 425/530 fwiw.
Maybe go with the softer of the two.
Maybe go with the softer of the two.
Last edited by Y2K_Frenzy; 06-18-2024 at 12:37 PM.
#4
#5
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Y2K thanks for the input. I went with the 150/400 Swift Springs and they solve the harshness in rear suspension. Manhole covers, small potholes and expansion joints are no longer a traumatic jaw jarring experience. Car does feel a bit bouncier in the rear so I stiffened up the damping in my single stage shocks.We will see !
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Y2K_Frenzy (07-04-2024)
#6
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Y2K thanks for the input. I went with the 150/400 Swift Springs and they solve the harshness in rear suspension. Manhole covers, small potholes and expansion joints are no longer a traumatic jaw jarring experience. Car does feel a bit bouncier in the rear so I stiffened up the damping in my single stage shocks.We will see !
#8
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Real cool