just for future searchers;

I've always contended that the 4G63T springs were a great "inexpensive" upgrade to our stocker springs but I never posted specs so I thought I would post them up here (info courtesy of BogusSVO on dsmtuners);

420a

41 @ 1.600 closed
105 @ 1.250 open

4G63T
66 @ 1.575 closed
160 @ 1.240 open

While the measurements aren't exactly at the same point, you can see that its obvious that the 4G63T spring is a much stronger spring.

For those that don't know, these springs are used as a direct replacement for our springs.

Captain Caveman

96 RS Turbo 11.414 @ 119.62 MSNS, Crower 2 NA cams, BW366, 10.5 comp, UDP, 60mm TB, W/A intercooler, 3.55 tranny 567.9whp 430tq
97 RS NA 13.188 @ 103.87 MSnS powered 12.5 comp, Crower 3's and 219.4whp with 175tq
98 RS DD 12.5 comp on stock ECU, LTH, Crower 2's, Koni, GC, Hypercoil, DG hats
99 OZ 5sp Stocker 15.856 @ 85.97
99 GS stocker auto 17.7@77mph!

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