How are you guys getting instant center are you using a Weight jacker style lower to adjust, And will a Weight jacker control arm work with the relocated uppers property. Because both companies that offer relocated uppers donít offer a Weight jacker style lower arm
You change Instant center with an adjustment to either the upper control arm mounting point, either at the body or at the rear differential, or by changing the rear lower control arm mounting point at the differential. Changing the angles of the control arm mounting point changes the instant center. Also changing the front and rear ride heights can also change instant center as it changes the angles of the control arms in the rear of the car. If you drew an imaginary line through the control arms, the point that that line from the upper control arm intercepts the lower control arm would be your instant center point. Here is an instant center calculator courtesy of Baseline Suspensions.
1989 Saleen 414 358cid SBF 2.8L Kenne Bell S/C
26 X 8.5 Hoosier
Best 1/4 mile time 8.623 @ 159.82 mph with a 1.34 60' (5.57 1/8th at 128)
Best 1/8 mile time 5.339 @ 133.46 mph with a 1.29 60'
08' Bullitt #4097 N/A 340ish RWHP <<<<<FOR SALE!