comparing suspension set-ups

I own a 98 Z-28 as well as a 87 camaro that has a decked out suspension from Spohn, anyway, when it comes to handling the 87 does extremely well but it has problems sticking to pavement in a corner, it always breaks the tires even under light acceleration. My 98 does not do this at all, it dead hooks and launches, why? Is it the Mcpherson strut front suspension that holds me back or do I need to lower the car some more and run stickier tires? As ya'll know I'm building this car for road racing so explain to me what I need to do in order to be better than the 98, thanks


list of mods:

Spohn sway bars
Eibach springs
Moog tie rod ends, center link, pitman arm
koni shocks and struts
Edelbrock 3 point strut tower brace
Spohn LCA's
Spohn T-56 torque arm - not yet attained, doing t-56 conversion
Spohn panhard bar - adjustable
aluminum driveshaft
Spohn wonder bar
Spohn SFC's

WTB: third gen parts

Need both front spindles off of a 82-92 f-body for the C4 brake mod, also, if it's worth the trouble I'm considering doing an LS1 rear disc brake conversion as well, if you have those parts and want them gone let me know, thanks

Michael

New here

I own a 1987 camaro which I am currently building to run on the road course circuit and autocross. It has a full spohn suspension, eibach springs, koni shocks and struts, edelbrock strut tower brace, etc.. and is in the process of getting a T-56 installed along with other engine and drivetrain mods. My daily driver is a 1998 Z-28 camaro with just a few bolt-ons but will soon be under the knife as well getting a complete suspension build-up. I am from the Knoxville, TN area, if you want to know anything else just holler, thanks,


Michael