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I'm curious to know the spring rates for the stock C/S/M, and I would assume that the rear springs on the sedan model have a higher rate due to the trunk. Does anyone know what the rates are? I'm trying to decide on my GC spring rates and would like to make an educated decision. I have read all the info I could find on the GC springs here (Berserko and Jmauld thank you!) and have pretty much decided on the 275-300 fronts (although I do drive this car year round, I would just swap in some stock AWD springs in front and the stock colt ones in back for the winter), but am unsure what to use in the back. I am a drag racer at heart, but would like this car to handle better than the wet bag of understeer that it currently is .

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Early 2000's: 1992 Summit sedan - 14.1 @ 100.9mph w/ 155/80 13s
2012: 1989 Dodge Colt GT Turbo - 14.9 @ 100mph, 10psi/s16G

I heard C/M/S I heard is about 90-100lbs/inch T/E/L are like 120lbs/inch now i could be wrong but I remember reading something like this here once before.

FOr the turbo's, it's 104 in the front and 106 in the rear. Or maybe the other way around. I don't know what the sedans or the n/t's are. I can check when I get back home.

Just fyi, I'm getting ready to swap my 275lb rear springs for some 400lb springs. I have 340lb springs in the front.

Well Jason....
That mean you'll have the 275's for sale? Let me know and we may ship them with the LSD if that goes off as planned!

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Member #533
1989 Colt GT (4G63 and a Lil 16G)Silver, 89Sonata tranny
1974 Fiat 124 Spider (Piece of S*it but I love it)
1995 Windstar (Wife's Child-bearer)

Why so stiff Jason Are you trying to control body roll or squat and dive? And what about the ride(ouch)?

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'89 Plymouth 200GT 4g61t , evo316g, fmic, 1g cams, cyclone intake, 1g throttle body, 2.5 hard pipes, 190 walboro, 650's, 2g o2, 2g ex mani,3" mandrel, ACT 2100, Fidenza flywheel, Unorthodox underdrive pulley, SBR lsd, , AEM wideband, tuned by maf-t, 2" drop, gr-2's, brembo
cross-drilled, metal masters, 205-50 Falken Azenis, etc., 280 whp @ 256 tq

I removed my rear swaybar, and I'm trying compensate for that with stiffer springs. The stiffer rear springs should also give me more traction in a straight line.

I haven't decided what I'm going to do with the 275's yet. They may go on the front of the car.

The ride actually isn't "that" bad. It's about as bumpy as riding in a short bed truck.