SCCA Prepared C FABO Build

Found the blog, if you're interested. Scroll down to the second post on the 21st in the link (November 2010), about half way down. He talks about why early camaro's are slow on the autocross, starting with the nut behind the wheel and then talking about the problems with the OEM suspension.

Seems he settled on a 500# wheel rate, and to get that he needed 1582# springs. Because of the spring location, it makes it really hard to get the rates he needs, and makes shock tuning a real bear.

Not really related to your project. Sorry about the rabbit trail.

I did notice the the motion ratio of the camaro lowers is really bad and it makes sense that he would have to run so much spring rate. It really doesn't allow the shock to work, like he said in his blog. I guess guys are compensating with 12" slicks.



Here are the lowers that I am running. I have not measured the motion ratio with these, but should be really good because the base of the spring almost contacts the spindle. I will check that and post the results. On the front I am most likely going to start at a 500 lb spring and limit the amount of droop with longer bump stops. I won't need 7" of wheel travel and the bump steer that would come with it. One thing that I like and hate about the early cars is how far the sway bar come out towards the end of the arm. This should allow me to run a smaller bar, but will also limit my turning radius. I plan to put my sway bar in my tubing bender and do a couple of custom bends to allow more turning radius.

The steering will be a factory power box with a 2:1 steering quickener in the column, so it will end up being about 1.5 turns lock to lock. Can you say go cart steering. Bump steer is really the only thing that I am concerned about, but once I get everything aligned I will be checking that and posting the results.