Four Wheel alignment 2gen Camaro

[Shotaro]

I drive a 1970 Camaro. I also participate in autocross, so please tell me about wheel alignment.
・I think the front suspension is Wayne Due Frame C4 Corvette Upper or lower and spindle.
・I am installing a QA1 coilover.
・Rear suspension is Speedtech torque arm
・tire size　275/35-18 335/30-18

[streetk14]

I’m not sure if there is any rear axle adjustment with the Speedtech setup. With my ridetech 4 link I did a 4 wheel alignment and zero’d out the thrust angle by adjusting the rear links. Thrust angle is setting the rearend where it’s perpendicular to the vehicle centerline, but again I’m not sure you can do anything like that with the torque arm setup. Your Wayne Due front setup will align just like a stock car. You need to decide where you want the camber, caster, and toe.

[David Pozzi]

You are going to have understeer because your front tires are too narrow. I would like to see a 315 front tire on your car. To help get the car balanced with your current tires you need to add a lot of rear sway bar rate to compensate and maximize the front tire grip by using the best alignment and geometry.
You need caster to be 7 to 8 degrees positive.
Camber at -2.5 degrees
Toe should be set at toe-out 1/8" to 1/4"

The most important thing about the rear suspension is the thrust angle, it means the rear wheels are pointed straight ahead. If it is off, the rear of the car will move to one side during acceleration.

[Shotaro]

I’m not sure if there is any rear axle adjustment with the Speedtech setup. With my ridetech 4 link I did a 4 wheel alignment and zero’d out the thrust angle by adjusting the rear links. Thrust angle is setting the rearend where it’s perpendicular to the vehicle centerline, but again I’m not sure you can do anything like that with the torque arm setup. Your Wayne Due front setup will align just like a stock car. You need to decide where you want the camber, caster, and toe.

The Wayne Due is a C4 Corvette spindle, so I adjusted the alignment based on the C4 Corvette. It looked good on the street.

Thank you so much