I'm interested in racing when I get back from Afghanistan in a few weeks, and I'm starting to pick up some mods for when I get home. I don't know much right now on what is allowed to be modified on our cars (2007 SS/SC) to be in the "stock" class in SCCA Autocross. I'd get the SCCA manual, but I don't think it would get here in time.

So what is generally allowed in the Stock class as far as performance and suspension goes? I've already got a GMPP Touring exhaust, Ingalls Stiffy, and about to get an interceptor. Other than that, I'm looking for more mods that'll keep me legal on Autocross tracks. Like intakes, shortshifters, springs, GMPP header, Downpipe, GM Stage kits, etc.

 

o rly??

 

pretty much nothing as far as i'm aware... if you add springs, sway, or strut you're gonna get bumped... IIRC.

 

www.google.com

i have seen it b4 when i looked it up.

 

If you want to get some mods, maybe you should consider bumping up a class. You're still going to compete very well in a class above stock...

 

ok, so for the next class up, what would be the class and what mods are allowed in it?

 

I say at least get stage 1 if you are going for stock class

 

ya just add stage 2 or something and springs and you will be fine

 

I know I'm going to catch flak from the mod crowd, but in all seriousness, spend the money that you would put towards mods for entry fees to get as much seat time as you can.

As far as what's allowed for the stock classes in SCCA Solo events, here is the short list of what you can change (consult the actual rules for more specific wording; a PDF file of the current rules can be downloaded at the SCCA website):

Engine related:
Any air filter that fits the factory housing/intake box.
Any ignition wires and spark plugs.
Any road legal, commonly available fuel (hint hint: 100 octane is your friend).
Any exhaust system from the furthest most catalytic converter.
Sorry to say, but the Stage 1 or 2 upgrades are a no-no for stock.

Suspension related:
Any replacement shock absorber/damper that does not alter factory specified ride height.
Any front sway/anti-roll bar that will mount to the factory designated locations.
A wheel spacer up to 1/4" of an inch to increase track.

Wheel & Tire related:
Any wheel that meets factory dimensions for width, diameter and offset.
Any DOT approved, commonly available tire (hint #2, "R-compounds"=very sticky tires)

Interior related:
Any restraint harness.

Even within those limited areas which you're allowed to modify, nationally competitive autocrossers will exploit those rules as far as they can. If you have more questions about what is "stock" feel free to ask or PM me.

 

Thanks a lot for that info!

P.S. - I didn't think you could change the restraints in "stock" class?

 

Catback is OK, Ingalls Stiffy I believe bumps you into a different class, not too sure on which one.

Different springs are STX class I believe, stage kits will put you into Street Mod.

 

like they would know you changed to stage 2 what are they going to do take an injector out.

 

All they have to do is look at the Pulley...

 

Conemark, thanks a bunch for laying it out "barney style". I think I'll invest in a few small mods and then spend more money on seat time than mods at first. How expensive is it to attend a few SCCA events in the stock class?

So has anyone competed in a class above stock, say the Street Touring class? Granted, I'm going to start in the Stock class, but I was wondering the results from anyone with a SS/SC in a higher class?

 

You could stay in stock class in the SCCA event and still come up with some decent mods to compete quite well. No need to lower your car, Koni has adjustable strut inserts and shocks out now, you can do the airbox mod and put in a cone filter. These look to be a couple options that you could try. Good luck.

 

Solo event generally run between 25 -50

 

i think , not postive, that im in DSP....street prepared...im going to a novice school on sat to get reaquainted...I ran HS with my stock Corolla a few years back
but i noticed only one other car in our race in that cat on sunday
I am deciding on running in Ladies or TIR class

 

conemark laid down whats legal in stock class but here is a pdf download of the 2007 rule book which should answer anyones question on allowable mods for any class.

http://www.scca.org/_FileLibrary/File/2007SoloRules.pdf

 

www.autox4u.com
2007 rules and classifications "new". This may help.
A stock SS/SC is in class E, a stage 1 or 2 SS/SC is in class D. Plus there is a breakdown of points for modifications, 20 pts bumps you up 1 class.

 

http://www.scca.com/_Filelibrary/Fil...ionsbymake.pdf

SCCA dot org

 

???

I'm not sure what you're referring to. I've not seen that listed in any SCCA rulebook.

Sotck SS/SC ( and the NA SS from what I've been told ) is in D-stock. If you change anything related to your boost on that car, it's gonna throw you striaght to SM ( Street Mod ) and then you better just go nuts and get as much good brakes, suspension and blah blah blah.

One thing that I didn't notice anyone talking about is BRAKES.... you CAN change your stock rotors as long as they are the same size and style as the OEM rotors. No slottted, Cross-drilled, etc... no BIGGER rotors... No Braided brake lines running to the calipers...No changes to better calipers, but you CAN change the pads to whatever you want, and you CAN change the fluid to a better fluid... I'm going to DOT4 fluid.


If you do any change to the ECU... you're in SM. If you put the CAI on and a strut tower brace and such, then you're in STX with the SS/SC... STS is the SS and base cobalts.

You CAN go to DSP ( As alleycat58 does ) and have fun there.

SM, STS & STX are SUPER competitve classes depending where you run. Nat's are uber tough. Check your local club out and see what is running and what's not.

Here, the Cobalt is semi-competitive in DS and alleycat does good in DSP.

Soo... if you're new to autocrossing and running in SCCA regions.. maybe try out Street Tire SHootout class. You can run a modded car with no worries as long as you run street tires. Downside is you run against all different cars.

Hope this helps. Conemark is a great source of Autocross info as is Alleycat58. I'm still a bit new, but I'm a sponge iwth this stuff, so feel free to ask me as well.

GOOD LUCK!