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However I could use two measurements from the IRS that I do not have access to:
#1" I have already lowered my car/frame by using the VanSteel aluminum diff mount kit. It supposedly lowers the car 3/4" Could anyone supply me with a measurement from a rubber mounted diff crossmember to confirm these dimensions? Basically I do not have stock dimensions available. TIA Either measurement will do. My crossmember has the Van Steel Delrin/Aluminum lowering bushing kit.
#2 I need to get the ride height "just right" for the program, and my car is heavily dissassembled. Could someone take these two measurements for me please? TIA
These should be easier to obtain. Car should be on the ground, loaded and settled. I would like it to be from a pretty correct car with a pretty correct rear ride height. I need both numbers. And please add your rear fender lip height.
Thanks in advance! And thank you for your assistance in helping us further our knowledge of these old classics.
The center of the hub to ground is going to be completely dependent on the tire size
(Coker says "Firestone Wide Oval bias ply tire features classic 3/8-inch redline and F70-15 sizing. This is the authentic size for 1968 through 1972 Chevrolet Corvette is 26.9" tall)
M
Yes. It's that axle hub height I want to compare to the trailing arm mounting bolt height. I am not sure if the trailing arm is absolutely flat or not, but it is very close.
Going to be hard to verify on the car, 1/2 tank of fuel will change the dim to the front bolt. Seems to me I was getting about 1/2" difference at the wheel lip depending on my fuel level and then another change when a person was in the seat (maybe I just need to skip a few snacks)
IIRC, the arm stampings were identical until they welded the brake brackets and bump-stop pad on to make them L/R but hopefully someone has one off the car to verify that
M
You are correct Mooser, a lot of items could affect this number. Fuel, tires, and especially which spring. The axle hub height I requested would allow me to compensate for a varying tire height. My car also has the Van Steel Delrin crossmember kit throwing another uncertainty in the mix. I can extrapolate but I would like to have at least one real measurement to compare with so as to verify my calculations. The geometry in the rear is very tricky, and changes very quickly in 3D as the IRS moves.
So if anyone can provide a height measurement maybe you could also mention fender ride height, which spring and how much fuel.
Thanks in advance.
Two Rear IRS Measurements Requested
