sperkins

As the title says. How do the classes cross reference? More specifically, what SCCA class would a PTA/TTA C5 Corvette run in?

BuckeyeZ06

ST2 more or less T1
ST1 more or less STO

PTA would need some upgrades for T1

96solo

TTS/ ST2 is T-1 with the aero accepted in NASA (wings, front splitters, etc.)

TTA / PTA is not T-1. It is stock with a few upgrades like Dot tires, swaybars, and shocks.

gkmccready

Basically, if you have a NASA car prepared to the full extent of the rules you're looking at ITE which is the catch-all regional class. If I'm reading the STO/STU rules correctly you need a stock dash pad, etc, too, so that really does just leave ITE for most NASA cars. PT cars may be able to land in some other classes depending on their modifications... under-prepared T1 car?

Going from SCCA to NASA is easier since you're just looking to land in the right pwr/wt range...

AU N EGL

and a C5 in T1 is almost obsolete with the C6 LS3 dry sump and bigger brakes??

0Vector Vette

If you are running a more or less stock C5 in ST2 then you are close to SCCA T1 class. If you are running with ground affects, brake upgrade, etc, then you are closer to SCCA STO class. If you have more specific questions, give me a call or pm. I can guide you through it, I have run in both NASA and SCCA.

Robert Finlayson
Performance AFX Motorsports
815-254-2631

wtknght1

Nope. A C5 at 3180 (or 3230) with those big brakes and that high reving LS6 is a very formidable car!!!!!!! The jury is still out on whether or not it can contend at Road America without some extra power.

Big brakes don't necessarily make you any faster, they just make you more consistent. Bone stock brakes are perfectly fine for Roebling or Lime Rock or some other easy braking track. Bolting on 6-piston Brembos aren't going to help your lap times there - overkill! But the light 2-piece rotors will help and those big brakes will help over the entire race distance at Road America, etc.

drivinhard

Really hard to match them up. T1 allows some stuff PT doesn't, and PT allows a BUNCH more stuff T1 doesn't.

A PT car built to the letter (big checkbook) of the NASA PT/TT rule book would look like a gutted, cheating ringer T1 car. Oh wait, that IS your car!!!

Z06cool

sperkins

Where do I register...

drivinhard

send me a big fat blank check, I've already got the car

AU N EGL

Can the C5s run 18" wheels now ? if not is one limited to the Wilwood 6 ponts?

wtknght1

Yep...50# penalty for anything other than those SL6R Wilwoods though.

sperkins

Guess I should take some "before" pics.
Thanks for all your help.