Since I am redoing my wishbones and mounting points I though I would check out weather or not any chassis height difference 5 or 5.5 inches front 6- 6.5 inches rear makes a differnece. I have never seen mention of it but I guess the pickup refernece points are measured from the bottom of the chassis rails and not parallel to the ground.
Dale

my wishbone pick up points are different , they stick the wheel out further and also have better geometry for bigger wheels , and i have based that round 5 inch ride height

Will it make a difference? Yes. Will you like it? No one can answer that except you.

There's another aspect of it though. It's not a problem, *IF* you have determined that by moving them you haven't messed up the suspension geometry. For example, will bumpsteer be different? And where is the roll center now versus before.

Will it make the car undrivable? No, but you're messing with the very essence of what gives a car its "feel" and if you just move things, it's likely to be much different, in a bad way.

Or perhaps I don't understand your question. If you are asking can you move the pickups, and will it matter, it all depends if you are moving the points differently relative to each other. OTOH if you're asking, can you shift all of them by the same amount, then yes, it'll be fine.

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Originally posted by Dale
Since I am redoing my wishbones and mounting points I though I would check out weather or not any chassis height difference 5 or 5.5 inches front 6- 6.5 inches rear makes a differnece. I have never seen mention of it but I guess the pickup refernece points are measured from the bottom of the chassis rails and not parallel to the ground.
Dale

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I have recalcuated the locations and am happy with what is suposed to happen, camber adustment roll height ect. Bump steer will be minimal with the rack in the correct spot.
The real question is my calculations are based on the car siting level, but I want the car to sit about an inch or so lower at the front than the back so the chassis is going to be at a very small angle to the ground.

My lower wishbone will be bracketed ontop of the lower chassis rail , parallel to it. In doing this with the lower chassis rail actually sloping up towards the rear of the car so the wishbone will be actually slightly higher at the back than the front- this will give a bit of anit dive-I would guess less than one degree.
I am wonderng if I should lower the back of the upper wishbone pickup the same amount as the chassis inclination or another degree or so that it does not produce dive.
I want to run fairly soft springs with a swaybar so a couple of degrees of antidive may be a good thing- but I dont want have it binding up- espeacially since I am using bronze bushings.
Dale