'89 Camaro
Depending on which motor we have in it, our best in the 1/4 is 9.42. You're mph is better due to the rear ratio, we run mostly 1/8 stuff so have it geared up with a 5:14 in a 9" Ford. Convertor is about 6100 from TSI, Powerglide is 1.80.
The front of the car is really basic for us. We put in a set of Moroso springs 10 years ago and whacked two coils off for ride height adjustment. We still use the OEM struts - had about 85k on them when we got the car. Changed it to a Vega box and removed the sway bar.
At the rear, we have the stock rear springs, aftermarket torque arm, UMI lower control arm brackets (top hole) and a S&W rear sway bar deal to stop the twisting motion of the car. 8 point cage and frame connectors of course.
60 foot is usually in the low 1.30's - the UMI brackets and the rear sway bar made the biggest impressions on the ST.
So I think you're wasting too much time on the front end and the car sounds like it might have a lot of wasted motion in it, which of course leads to higher ST's and ET's. It also has the IC sitting too far in front of the car, ideally it should be about where the engine/trans come together. Lowering the rear of the lower control arms will move the IC closer to that spot and really help the car move on the launch.
