GAS

I want to find a way for a C5 corvette prepared to the max for each class with an equal driver to be on a level playing field. I think an ST2 C5 vette should have an advantage over a T1 C5 vette as things currently stand. The aero and brakes should give ST2 the upperhand?? Is that the consensus here? If so, do you think allowing a T1 C5 with the same 8.7:1 hp/weight to run the HOOSIER slick versus the ST2 car on the HOOSIER A6/R6 would tend to even the playing field? There has to be a way for ST2 and T1 to play together!!

wallyman424

Well Geff, if you have a magical top tier C5 T1 car that can get down to 3180lbs, and it makes a reasonable 380whp, then you're at 8.36 which is higher than the ST2 number.

I think it'd be easier to maybe give the T1 cars a little bit of a weight/hp break rather than giving them a better tire.

On the other hand, the T1 guys have no problem going fast, so no concessions should be given in my opinion.

mrc24x

It's easier to make that car a PTA runner.... Just sayin'

rasrboy

Matt just just wants more cars in his class so he has a chance to hord more Hoosier's.

Seriously though, I run my T1 car in ST2 and the only thing I do is tape over my SCCA sticker and run my NASA sticker. Yes, the areo,bushings,bigger tires and the big brakes do help the ST2 guys, but you can still run close and have good racing. Not to mention a hell of a good time with this group.

If you go full tilt ST2 you can't run in T1 but if you go full tilt T1 you can run both groups. YOUR CALL!

Welcome aboard mate!

Aaron Quine

AU N EGL

C5 T1 car, can do both, bot not the other way around.

Not sure about the C6( LS3) T1

clubracer6

To me this is a big issue as I try to step out of GT1 and into the Corvette racing community.

I have been so torn about which class and group to run with because neither one really has a big following right now - at least here in the Midwest.

STO in SCCA and NASA's ST1/ST2 are the most appealing because I would like to run brakes I don't have to worry about every session and I can also change the roof so I can have the cage built the way I want. Problem is an STO car is too much for ST2 and too little for ST1.

I believe that 3rd reason after cost and class parity is that Spec Miata is so succesful is that you have endless options of places to run any given weekend. You will also always find at least 10 cars out - bare min.

ST2 should appeal to more folks at it is a relatively affordable way to go racing in something fast. But again if you build a good ST2 car, you are limited to ITE at SCCA or I suppose STO if you don't mind getting smoked.

I do think the much argued point of slowing down ST1 down to STO specs would be good and leave STU for those that want to run big HP.

I personally haven't found the exact answer yet - but am trying to sort it all out and quickly.

In ideal world, we could get all the Corvette and Viper guys together to sort all this out and all get on the same page and push our clubs to do what needs to be done.

L98Terror

Geff being that you are from Wisconsin is seems like a no brainer to set the car up for T1, you guys have a lot of cheese to go with the whine

BuckeyeZ06

L98Terror

Sorry you were too fast for me to go back and delete that post, but the drama over in the SCCA forums is quite amusing

AU N EGL

Jason

96CollectorSport

Really all you would have to do to make the T1 car legal for PTA would be to put 275's on and run a single adjustable shock less than $2400 a set or a non adjustable/revalved shock.

Because most guys who run a TTA car run 295's and sway bars.
So if you get 4 points back for running the 275's then you can run an aftermarket set of shocks.
But I just want to be sure I'm reading it right.

1) Non-OEM shocks/struts/dampers with an external reservoir or more than two ranges of adjustment +10
(example: compression (bump) and both high & low rebound adjustments)(must still take points for springs below).
2) Non-OEM shocks/struts/dampers with a retail price of greater than $600 per unit ($2400 total) or $750 each if sold only
as a coilover with spring included ($3000 total). Also “Piggyback” external reservoir shocks/coilovers/dampers with a
retail price of less than $1050 per unit ($4200 total)—must still take additional points for the springs below +7
3) Non-OEM or modified/re-valved shocks/struts/dampers +3 (all others)(springs not included)

If that's the case Geff all we would have to do is run the smaller tires and we're fine for PTA/TTA and that would be pretty easy to do, or you could put a set of 04Z shocks on and run with 295's all around. We are already at 8.7 to 1.

Edit - Forgot about the exhaust (which is really dumb in my opinion since you already have the 8.7 to 1 rule)
Since we don't have cats we would have to take a point for that and we would have to install a set of Ti mufflers. -

drivinhard

A T1 car would have to run "heavy" in TTA/PTA, any healthy T1 car will make far more than the 8.7:1 @ 3118. Heck even my wimpy 01 cam'd LS6 is exceeding that with just a CAI. (and the weight thing probably isn't as big a deal in PTA, as it is in TTA, where folks go out with 4 gallons in the tank and actually take advantage of it)

Also (often overlooked) is with 275's, you get an adjusted .4 hp/weight adjustment back. very nice.

I'm not sure anybody has ever taken a C5Z to the limit of the rules of TTA/PTA, (the allowable "free" mods NASA allows), IMHO, you could build a faster TTA/PTA car than you could with T1. Somebody send me about $20k and I'll prove it

A T1 car couldn't run the T1 springs/shocks, etc. maybe shocks like you mention if you go to 275, but it would have to run C5Z springs at least.

ryan0

Whos T1 car have you seen at 3118?

Most of us cant get under 3218.

drivinhard

that was my point. pretty hard for a T1 car to get to 3118.

easier for a PTA car to do it, and REAL easy for a TTA car to do it.

L98Terror

Are you sure about that? I believe you only get the .4 back in TTS/U not A

drivinhard

good catch on that. that's a 6.2.x section and 6.2 is for TTS/TTU/TTR

so I assume the adjusted weight classification (sub 3200 or + 3299) don't apply to A/B/C, etc either...

*edit* now I'm not sure? lol. seems to include all classes...

Each class has been assigned a minimum “Adjusted” weight/power ratio. Regardless of
how many points a car has, or which base class it begins in, it may not exceed the minimum
“Adjusted” weight/power ratio for its competition class. Any vehicle found competing with
an “Adjusted” weight/power ratio less than the minimum level assigned below will be
disqualified, and additional penalties may be assessed.
TTA 8.70:1
TTB 10.25:1
TTC 12.00:1
TTD 14.25:1
TTE 16.50:1
TTF 19.50:1
The “Adjusted” weight/power ratio is calculated using the actual chassis dynamometer
maximum horsepower of the vehicle, the minimum competition weight (with driver), and other
factors such as body type, transmission type, and tire type and size. The method used to
calculate the “Adjusted” weight/power ratio is fully described in 6.2.4 and 6.2.5 (as well as in the
Super Touring Rules).

96CollectorSport

I forgot about the springs, so really we could run the car if we replaced the shocks with 04Z shocks, we would use 2 points for the springs and 2 points for the exhaust. This could go on forever on how to use the available points but I would think that depending on what tires you run a T1 car could fit well into PTA/TTA and do quite well.

L98Terror

Man I would love to run that car in PTA

ryan0

i thought the math said that a C5 Z had to be stock suspended and run 275 hoosiers to make PTA.