Pro Stock John

iTrader: (34)

I've seen Madman suggest no more than 4 inches of travel, and in one thread, I think he suggested 2-3 inches because the guy's car is so light up front.. Smokn95 or whatever he goes by.

Dragaholic

iTrader: (180)

Yeah, with the old setup, the car weighed 2850 WITH me in it. I can't say what it weighs now.

Dragaholic

iTrader: (180)

Ok...I just took some measurements. I had the ground on the ground, suspension settled, etc. I put a straight edge ("L" <-- Looks like that) and rested it on top of the tire and the other end flat against the sidewall. I then got a 6" ruler and took a measurement from the top of the straight edge to the fender well lip. Then jacked up the car until the tires weren't touching the ground. Took another measurement. There was a difference of 2". Is that the correct way to do it?

Dragaholic

iTrader: (180)

Ok, there has to be a different method because I took the same measurement while off the ground, then lowered it back down, now it's showing 3/4" difference. I even pushed down several times to make sure the suspension is settled.

Dragaholic

iTrader: (180)

Ok, now I took measurements of the pinion angle (flat surface on the torque arm mount) and the angle on the driveshaft.

Driveshaft - (+1)
Pinion angle (-3)

RAGENZ28

iTrader: (5)

So that's -2 total degrees, that's a good starting point.

RAGENZ28

iTrader: (5)

To measure the travel I would just measure ground to fender, then slowly jack the car until all the weight is off the tire and is like a hair off the ground, then measure fender to ground again. That should be pretty accurate.

Remember when the car is on the ground the tire is compressed, so when you take weight off of it the measurement will be different because the bottom of the tire will gain a little size, 3/4" sounds about right.

Also if you change the ride hight front or back remember to recheck your pinion angle.

Dragaholic

iTrader: (180)

Wouldn't that be a total of 4 degree difference?