Need to order the front coil springs .Car is 4 link a arm fully loaded 2650lb 50/50. Viking dual adj. 110 lb, rear. The car has 450 lb 7 1nch now but they require a lot of spring compression to achieve proper ride height,plus they are junk.I know what the manufactures recommend.Those that have experience ,would you use 475/500 7 inch or a 400425/ 8inch spring .This will be a box car maybe ss/super gas, This will not be a very fast car,i am not concerned with travel, mostly consistency. Its a small block 580ish hp,glide,as big a tire as I want ,currently 14x32 with 4.88 dana . What are you guys using,hoping Dave Hall or Al or Keith Richards will chime in. Car is a 71 cuda with 113 wheelbase

Weigh the front end.. gotta have that.. I have
a coil over front but the car is much less weight

The car is 2650 50/50 .rf 670 lf 680, rr676 lr674 . cross weight is also 50/50 and I have many ways to adjust weight.I will race this car in no box gas classes ,and super pro with box, may try 10.90 ss stuff.This car will be set up not to wheestand, just another boring kill the tree and run the number stuff. So my question is what has worked best for heads up racing,a stiffer spring,. This will be my first four link car so I will be in a learning curve, hopefully out within a month. Any advise you can offer will be appreciated ,thanks Mike

Are your struts 3" travel

450 sounds like a lot for that car on a typical Mustang II style A arm. On the front, you usually want to use a lighter spring compressed some and use the shock to control it. On a deal like yours, I've tried tying them down to get a light and it made the car junk. You need some front movement to get some pitch rotation and an aggressive 4 link set up to make it go red.

Who's shocks are on the front? What is the installed C-C on the front shock? Is that 2650 with driver? Not all A arm setups are the same. Take two measurements - lower control arm pivot to lower shock mount and lower control arm pivot to center of lower ball joint.

What gear set is in the trans?

Front shocks are Vikings double adj.,total travel 2.62 inches (recommended ctc around 10 inches. lower control arm is 11 1/2 from center on ball joint to inner pivot point. Shock is 2 1/2 inches from center of ball joint. Shock angle is 10 degrees. Its based on a mustang 2 similar to chassiswork. Viking recommends the 8inch spring with as much as 60% compression on the spring to accomplished the correct installed height. The car has adj. shock mounts so ride height wont be an issue.2.90 low , not too concerned with et ,want to be able to go red on a .400 tree

Your car sounds just about identical to one I'm working on right now, except for the 4 link and this one is a few percentage points lighter on the nose. That and it has a 900 horse SB2 in it. We're putting Strange DAs with 8" 350# springs on the front and 125# springs on the rear to try to calm the ladder bar suspension down. I'd like to have the front shocks in at about 9.75" with the spring compressed 2.5" or so. Front spring rates aren't as critical as rears, but I like to have them compressed a bit to make the front end a little more "lively" and control it with the shock. I'm going to put this thing together and on scales in the morning to see if my results match my arithmetic.

That 8" spring is compressed 1/2" when it's on that short shock with the spring seat all the way down. Then compress it another 1 1/2" to get the shock in at the correct length. My arithmetic says a 400 spring will be compressed ~2" at ride height. A 350 spring will need to be compressed ~2.5".

You mean a 1.90 in a Glide?

Yes a 1.90 low in the glide,looks like I will start out with a 375 8 inch with the extra compression should be close enough,thanks for your input ,will report results hopefully soos.

Keith Richards..... not sure if he’s even racing anymore. Sure doesn’t come around here anymore
Dave Hall.... been on here lately, but maybe he’s running at Sac this weekend
Al.... traveling meandering his way back to Las Vegas as of now

Spent part of the day setting up a car very close to yours weight and front suspension wise using 8" 350 springs. I expect the 375s will be way heavy for your situation. 350s are compressed very little at the shock length we are using, but should be fine on this car at the power level he has.

Sergio! Just saw this post and unfortunately I'm no help. I have no idea what's on the front of my car as they were Strange struts from Alston that came with the kit. Right now they are adjusted pretty much to max as I needed every inch of ride height for the 22" tires. My car is so low that I have never been able to make the front end do much of anything with the limited power that it has. I tried it all, believe me... IMO, depending on ride height, I would get a spring that is somewhere towards the lighter side if you have DA struts. Lamb will set them up ($$$) and are great on the phone as well!

I agree ,I just ordered 8 inch 350s. Hi Dave I was pretty sure you had struts but wasn't sure. Are you taking a break or broken? I hope to be out again by the end of the month.

I use 300# springs on my HDK coilover setup that has the shock in pretty much the stock location.

I'm actually working for a guy racing Div. 4. Kind of a nitemare but fun as well. My car is not broke. Taking this year off as my house has a lot of needs that come before racing. Get out to Sac. and test. You don't have to run it all out to quench all those short numbers into something consistent. Let me know if you go and I will come down and help if I can!

I doubt you can get the shock closed up to 10" with a 350# at your front corner weight. Maybe, but you won't have them compressed to store any energy to help rotate the car.