msgZ28

iTrader: (1)

I keep meaning to ask this question, and since there is a sale on, I guess now is a good time to do it. My Z28 has single adjustable QA1 shocks at all four corners, and 325lb springs in front. Are these too stiff for street, and as much drag racing as I can do when I get home? Or will they be fine with some more power?

Also, what settings would be good for everyday and track. I was thinking 6 front and 4 rear. What do you think? Thanks in advance.

msgZ28

iTrader: (1)

Bump to the top before bed. Too elaborate, I went on the BMR website, and they recommended 275 for drag racing, 300 for DD and 325 for handling. 50lbs doesn't seem like much difference, so should I change them out or will they be fine to go down the track with?

camaroextra

iTrader: (10)

They will work, but you wont have as much wieght transfer as you would with 275's

msgZ28

iTrader: (1)

Thanks, I will leave them on for now then.

Killer_Bluebird

iTrader: (23)

I would keep what you got. Just for comparison the stock Z28/Firebird V8 front srping is 292# with the 1LE performace handling package it is 360#. Most Road Racers and Auto X guys run anywhere between 400-600#. As far as Drag application your better looking more at the rear spring rate, as this is what controls how quickly the weight transters to the rear wheels during hard acceleration. The Eibach drag springs run a progressive 75-135# in pre '98 cars and 80-137# in 98-02. The stock springs are 114# or 130-180# progressive if you have the 1le option. So 2 things to improve weight transfer softer springs in the back (though you have to be careful otherwise you'll be bottoming out all the time) and softer compression setting on the rear shocks.

If you haven't tried this. Take some zip ties and tools to the track and remove your Front Swaybar links and zip tie the swaybar out of the way it will allow the front end of the car to rise more on hard acceleration. Just don't drive it like that on the street it will make the car handle like a pig. My .02 hope that helps.