Anyone use Global West S-39 or S-40 rear lowering springs? Opinions?

 

when i was designing my suspension i considered the global west rear springs. GW tech recommended the S40 190# linear springs for use with a stock length torque arm and the S67 100# linear springs for use with a short torque arm. I ended up going with Ground Control Weight Jacks for the adjustable ride height and cause i could choose my spring rates much higher than all other options. To try and avoid spending the money for weight jacks, I almost used Eibach pro kit fronts and GW S40 rears because they were the highest, linear rates i could find besides weight jacks.

Although I can't speak for ride height or the S39 springs you mentioned I know I would buy GW rear springs especially for the linear rates. They were my #2 choice to weight jacks. If they are too tall you can always cut them as long as you do it right.

 

I'm still reading about suspension set up and wasn't sure if 190# was too much or not. Front will probably around 800# or a bit under and I'd read somewhere a ratio of 5:1 is about right that's why I thought the S40 might be too much but can't find what the S39 rate is.

 

Thats what i did. Read read read. slicktrackgod, big mods, pablo, and dbl_tke are few of my favorite people to read. lots of other good advice on here. FRRAX.com is really good too.

i called global west to get all my information on their products. I've heard of the 5:1 ratio too. Not 100% sure how important that is. Ground control gave me 850 fronts and 250 rears. i questioned the higher rear rate but they insisted because of the added weight of my stereo equipment and dynamat. I haven't installed any of the rear suspension yet so i can't comment on that combo yet.

I really believe the 190# rears would be good. A lot of the weight jack guys run 200-225# rears on their street cars.