Spring Rate Suggestions for '68 Camaro

[David Pozzi]

I entered the measurements from my Morrison sub into the Ride Tech calculator. The Morrison sub is nearly the same as the 21'st century using the same lower control arm and nearly the same shock angle.

Ride Tech Calculator:
Cruiser/daily = 375
Perf driving = 425
Racing =450

Mary has been running the 350 rate since last fall.
James has 425 on OLC and it's doing very well. With the Ride Tech shocks set at mid-range, the car rides great on the street.

We had some indication of hitting the bump stops on Mary's car when she tried lower shock settings. So we will be trying some stiffer front coils. I think if you have a more streetable ride height, the 350's will work fine, but I'd turn the shocks up for an autocross.
FYI, Morrison runs/ recommends a 450 front coil on their 69 Camaro.