Ballypinball

I read here about adding z51 swaybars or something like that to improve handling.

Is this only for older models

AORoads

hmm, not sure (someone will chime in re the 2011). but you do have several choices that people have added to their F55-equipped cars, everything from Z51 sway bars, T1 GM bars (haven't read of any added to F55), and pfadt bars. I'm not sure but Hotchkis makes bars for C6s , too.

Wayne O

I haven't kept up on all the details about the Grand Sport but what sway bars are on the car now? If the GS mates the 'base' C6 sway bars with the F55 suspension (as they did on the non-GS, F55-equipped C6) then I'd think beefier sway bars would be an improvement. I'm acquainted with one of the lead engineer's who developed the MR suspension for Corvette...he had his F55 test car outfitted with the Z51 sway bars at Nurburgring and said it made a noticeable improvement. At that time, marketing execs ruled out using the Z51 sway bars as they didn't want the F55 seen as any sort of a performance option that could compete with the Z51 option or the Z06.

Before I changed my F55 suspension to coil-over's and with wider Z06 sized (street and track) wheels and tires I used both the Z06 sway bars and very briefly (until I installed the coil-overs) the T1 sway bars. I thought the Z06 sway bars were a good match. IMO the T1 sway bars were a bit much for the F55 suspension. With the wider stance of the GS and with its wider wheels/tires I'd think the Z06 sway bars would be a good match with the MR suspension. See what's on the car now and where those sway bars fit in on the spec sheet shown below.

vettedoogie

I think the GS F55 suspension already has the stiffer sways but I'm not sure.

2006c6keller

One possible way to check the GS for heaver sway bars is to put in "tour" mode and turn steering wheel back and forth quickly with small movement at about 40mph or less and see if fenders REALLY rock up and down. If they are firm with practically NO up or down motion, probably and most likely heaver bars. Then while doing this, turn magnetic ride to "sport"; if not much change, probably has heavier sways and not basic sways. This a way in the early C6's to test if magnetic ride was working. Try it and see what happens.

DISCLAIMER: DO AT YOUR OWN RISK!

AORoads

and try not to lose control of the car .... j/k

j_digi454

I read it here on the Forum that the 2011 GS/F55 is mated with the Z51 sway bars standard. Do a search or maybe someone like Talon90 can comment.

AFVETTE

One look under the back end should tell you all you need to know, if the rear bar is pencil thin than the current F55 has the base FE1 bars, if it's realitively thick it's most likely the Z51 bars.

Trust me any Corvette owner will be able to tell just by looking at the rear bar.

Tom

2006c6keller

Why trust you, just measure and use the chart attached in Post #3 to determine which bars you have?