Coupe ride height

[rj35pj]

I'm sure this has been asked before....I probably have my ride heighth at a minimum. When I assembled the car I tightened the retainer ring on the coil-overs up just enough so that there was no play or movement in the spring. Tonight I was traveling on a highway at about 60 MPH and ran across two small patches where the pavement had been ground off I apparently hit the bottom of the radiator aluminum :mad: so I need to raise my ride heighth.
I would like to know what others have done to make this car a little more dependable with regards to road conditions. What kind of measurement do others recommend and are you measuring off the bottom of the large round cross tube.
Thanks,
Bob

PS Is ride heighth raised only by compressing the spring on the coil over more. :confused:

[68GT500MAN]

Yes, the ride height is adjusted by compressing the spring with the retaining ring. I had the coupe at 4" front and rear with no problems if that helps.
Doug

[kiki231]

I am running at 4 5/8" front and back. Since my tires are 15" bias ply, I need the ride height to get the wheel well clearance. I have not had a problem yet. Remember to keep an eye on your pinion angle with height changes.

[rj35pj]

I am running at 4 5/8" front and back. Since my tires are 15" bias ply, I need the ride height to get the wheel well clearance. I have not had a problem yet. Remember to keep an eye on your pinion angle with height changes.

Thanks I had forgotten about the possible change in pinion angle!

[STLMARSHALL]

I run 3 3/4 front and 3 1/4 rear. Mostly for looks as mine looks like a dragster any higher. I have not hit anything yet on the road and have only bottomed out on my trailer when it was at the wrong angle. I run standard 17" tires.

[rj35pj]

I run 3 3/4 front and 3 1/4 rear. Mostly for looks as mine looks like a dragster any higher. I have not hit anything yet on the road and have only bottomed out on my trailer when it was at the wrong angle. I run standard 17" tires.

After looking at my problem more I don't think I bottomed out. I tied the two lower pieces of aluminum that are under the radiator together with another piece of aluminunum to strengthen them and hopefully reduce vibration. I believe I created such a wind pocket that at speed I was pulling down on those two lower pieces and I actually tore the front aluminum panel right in the corner on the driver's side. After it tore any time I was over 40 MPH it would "blow" down enough to scrape the road creating the terrible noise I had last night on the 4 lane. Under 40 MPH no noise ....I have repaired the aluminum and left the two pieces tied together but I drilled 7 2 and 3/8 inch holes in the panel that is located under and just to the rear of the radiator, the very lowest portion of the one piece aluminum that forms the whole back of the scope that directs the air out ahead of the engine. I haven't tried it yet but I feel this will take care of the airdam that I created.....time will tell. I do also plan to raise the front of the car slightly, it currently measures 3 and 3/4 inches with 17 inch tires.
Thanks to all for ideas and input.
Bob

[xlr8or]

I set mine at 4" in the front and 4.25" in the rear (measured at the end of the 4" main frame rails) and then began adjusting corner weights. It stayed pretty close to that when done.

[rj35pj]

I set mine at 4" in the front and 4.25" in the rear (measured at the end of the 4" main frame rails) and then began adjusting corner weights. It stayed pretty close to that when done.

Thank you, I'm going to do the same.