SLP IROC-Z

iTrader: (14)

Rear suspension is bottoming out on the launch, my lcas are level at ride but but surely going negative when the back end goes down. my rear springs and shocks are stiffer than stock, i run no front sway bar. to me it looks like the car needs more anti squat.

http://youtu.be/92v-yf_foZU

02sleeperz28

iTrader: (26)

What rear shock do you have? Also, what rear sway bar?

Doug G

Looks like you need stiffer shocks....or better yet, adjustable ones.

SLP IROC-Z

iTrader: (14)

KYB gas adjusts and intrax 2" rear lowering springs (very stiff) needed the lowering springs to make up for the added height from the 9". i also have air bags but the car launchs better with them empty.

subhumanzz

iTrader: (46)

Lca angle should be as close to -2 * down from the body to the rear as possible.

Slowhawk

iTrader: (12)

Track bar will fix that. When set up right it will lift the rear,not squat.

SLP IROC-Z

iTrader: (14)

do you mean drag bar don or a trak pak?

ty_ty13

iTrader: (42)

put a race shock on it... like some AFCO's with the radial valving.

Slowhawk

iTrader: (12)

Drag bar like BMR. You seen my car launch hitting consistant 1.4's on stock 100k mile shocks/springs.