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My long ago restored '69, sometimes steers weird.
'69 BB manual, with large front sway bar, no rear bar, Bilsteins, VB&B rear fiberglass spring, 360lb??? front springs, all new bushings (25k miles ago), etc. Rides a little rough in town, but great in the mountains.
Sometimes on harder turnes, or at speed, it steers smoothly to a point, then abruptly increases the turn. Kinda like bump steering, but on a smooth road/turn.
Everything appears to be tight and working correctly.
My best guess is that something is binding up, and then lets go.
Everything lubed where possible.
Any guesses??
Is the absence of a rear sway bar contributing to this. BB's with that 650 pounds of cast iron in the nose, need rear sway bars. I wonder if in a sharp turn, the front end is plowing and the rear end is getting light and loose,, making the rear end slide sideways? Comments from someone who is not a suspension expert.
The car originally did have front and rear bars. Smaller than what I have now. OEM 7/8"??? front and 9/16"??? rear. When I reworked/upgraded the suspension, It had a lot of oversteer. With help from the forum and a little swapping of bars, I got to mostly neutral steering.