adding lead and where?

[7uptruckracer]

Lead should be bolted roughly 16-20" on the race car from the ground. There is a formula for finding CG on your car I block mine up 24 inches but I've heard 14" too, the camshaft in the V8 is a used rough in sometimes but not precise. Low weight for Heavy and Tacky Tracks, A higher Position for slick. You want the weight in a common grouping never in front of the front hubs and never behind the rear axle. Try to get your polar moment in a tight central grouping but still maintain the correct percentages and minimize your weight being at far counteracting ends.

[powerslide]

I think you two are discussing different things. One person is concerned w/ the CGH(Center Gravity Height) and the other the CG(Center of Gravity).

Again posting the longacre link

http://www.longacreracing.com/articles/art.asp?ARTID=22

[DaveBauerSS6]

The CG of a 3 dimensional object like a race car includes the height, the link you provided again doesnt tell you how to find CG as if its different from the CG Height.

Ill erase my post so you guys can move on sorry for pointing out the obvious. My bad.

You are right about the CG being 3d. Moving lead until it has no effect on the %s is the 2 dimensional position. The vertical is a function of how much roll you want. The link was for finding the vertical height.

[7uptruckracer]

I agree with stock car finding your CG includes lateral and height. If you could suspend your car in a single wire from the side and the top there is one central location that would work to balance both

[speedbuggy]

I need to add 40 pounds to car the drive was 260 and now 220 so where is the best place to place this weight to keep the %s the same. Under driver seat or high on left side where do i need to place this?

So, bluemod....

in the midst of all this, did you get an answer that you can use?