I had a similar caster problem on my 72 Demon avatar car. Cam bolts maxed out and was still 0 to 1 deg in the wrong direction on caster. The car would randomly become very dangerous at the track swerving side to side on its own with the only recourse being to lift and hang on.
Got the Gen1 SPC arms from Peter Bergman. Good guy to deal with and would go to him again. Installed them and put an alignment on the car in my garage. Dialed in about 3 deg of caster on each side. Car has been to the track 4 times since and goes DEAD straight. ZERO of the old swerving issues. Problem solved! These arms make it quite simple to dial in the caster and camber you want. If I could do it, ANYONE could do ir!!
