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Old 06-02-2013, 03:43 PM
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1969 Firebird, how much sway bar is too much?

I had a 79 Trans Am. It ruled. My 69 bird drives like a boat. I am making plans to beef up the the suspension and steering to somewhere in the range of where my 79 was at. I was thinking 1 1/8 for the front sway bar and 7/8 for the rear. However I found some 1 1/4 bars on summit. I know that a small increase in diameter really increases stiffness. Is 1 1/4 too much?

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Old 06-02-2013, 04:06 PM
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herb adams tuning style was big anti roll bars and softer( than all out stiff) springs

if you are into firebirds/t/as you know whom herb is.
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Old 06-02-2013, 05:24 PM
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I don't know how much different the suspension is between a 69 and a 75 f-body, but I thought I'd mention that a set of polyurethane bushings for the rear leaf spirngs made a tremendous difference for the better.
They were some real low cost parts from JC Whitney back in the mid 1980s. I don't recomend them for anything but leaf springs and sway bars though, as they will bind and potentially cause severe damage to suspention mounting points on the body in a 4-link rear end.
I also added a 1-1/4" front sway bar to the front end that I pulled from a salvage yard off of a mid seventies TA for $15. I don't know(doubt) if it will fit on a 69. It felt as if I could make the car do whatever I wanted it to after that. Hardly any body roll and you could tell the only side to side sway came from the tire sidewalls.
FWIW,
ssmonty

Last edited by ssmonty; 06-02-2013 at 05:33 PM.
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Old 06-03-2013, 02:50 PM
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killer, thanks man
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Old 06-03-2013, 04:41 PM
kso kso is offline
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Herb Adams used sway bars that were so thick, the subframe wound up doing much of the twisting instead of the bar. He also did things like, tie the front of the frame tight to the firewall, so that it would crack to pieces after a season. No issue w/ Herb but his solutions tended to be simplistic.

A first-gen will never handle like a 2nd gen using easy parts, but you can come close w/ the standard methods.
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