Depends on what you are looking to do, be it street or drag. Regardless the coilover spanner sets the ride height not the spring rate. I'm running 175# lbs with my team-z's and had the same with my upr's.

 

I have a 05 6.0 lq4 and 4l80e. with 200 lb racecraft springs

 

I'm with Mikey.....the 200lb springs should be about perfect.

 

I should have asked "6.0" iron or aluminum? I assumed aluminum my bad. I should add I have a lot of weight off the nose with an aluminum block..I.e.my 175# springs.

 

Ended up using upr drag springs, cut one coil in front sits perfect i didnt realize someone cut the #### out of the stock ones

Sent from AutoGuide.com Free App

 

Sorry I'm late, I called Dave @ Team-Z
He said with tubular exerything for the street 200#'s
For the track 175#'s
With an iron block and/or turbo I would lean toward the 200lb-ers.

 

Yea I'm going 200 when i go coil over. And yes its a iron block 6.0l i will get some more resent pics up asap. Ended up going drag springs in front cut 1 coil and 1 1/2 coil cut stocks in rear with umi lift bars with urethane insulators top and bottom


Sent from AutoGuide.com Free App

 

i'm using 175's in mine

 

Do you have a lot of wieght transfer with 175? And are they 12s or 14"


Sent from AutoGuide.com Free App

 

I believe mine are 14's and I have good weight transfer but I also have double adjustable Afco struts and Strange rear adj shocks. I now also have Team Z anti roll bar. Tomorrow I'm trying some new tires so it will take a few pases to see how it all works now.

 

What I have seen on some cars that guys will complain of excess noise in the front struts when using shorter springs. When the car comes way up on the launch the spring loses its tension and is now under no load so its loose for a few seconds.

 

Ok so 14 200 might be a good starting point. I just put these on and removed swap bar and front end doesnt lift at all

stock struts with eibach front drag springs dont work with this setup lol


Sent from AutoGuide.com Free App

 

Ok so 14 200 might be a good starting point. I just put these on and removed swap bar and front end doesnt lift at all View attachment 370873 stock struts with eibach front drag springs dont work with this setup lol


Sent from AutoGuide.com Free App

Stock struts and it shouldn't work. Do you mean when moving? Your rear suspension needs to be set up also. The lower rear arms are like leverage trying to lift. If it's off then no matter what you have up front you will not have any good travel.

 

It has stock struts. If i bounce front end it tightens up. Ditching umi lift bars and going with trz double adjustable uppers and solid lowers. Should work a lot better


Sent from AutoGuide.com Free App

 

12x150 on the front of mine. Cam only, intake and carb. Heads milled .020. stock otherwise. 1.300 60ft 6.24 et

 

What rear suspension and front strut


Sent from AutoGuide.com Free App

 

Anti roll is upr, home made lower relocation brackets, upr double adj uppers, strange 10 ways front and rear. 4.30 gear. Gonna try a little stiffer on rear struts to see if it will help keep them planted on gear changes. Having problems spinning down track