The swaying is typical of bias ply slicks, regardless of the type of tire is on the front. The only time mine has swayed bad on bias plies was when the pressure was too low.
On a heavy car, you'll probably be around 14-15 psi for them to be happy.
So your car only picks up 15 mph on the back half N/A? And then only gained 6 mph at the 1/8 on a 350 hit???? You have some issues going on here.
I agree as I do remember my low 12 high 11 car from the 70's walking some in the traps and I had bias slicks and bias up front. But I have seen mixing radial and bias make it seem even worse as I know it did on my car. Course radial slicks also run more pressure then bias also which can help. I know my 63 is much better with the radial slicks then the bias were and I do run radials up front. But I think you are right as even if I had bias tires up front I believe it would still have walked some in the traps. Because as you stated it is typical some of the bias slick from what I have seen and heard. Ron
