At what point does the general SS/SC community think an upgrade in this area is necessary ? So Far I have gotten fatter/wider tires,stage 2 upgrade from GMPP,Iridium plugs,Grounding kit,Injen CAI with wet shield(AKA little more resistance in the air flow dept)B&M shifter, free flowing exhaust. I figure , an honest 225-235 at the wheels- but I need no proof, just satisfaction in my ride. The reason I ask this is because the Chevrolet dealer put it right on my reciept when I had the stage 2 put on that I turned down this steering knuckle and some lower arm upgrade---Like I was making a mistake . Anyone have problem with or without this set up ? I play quite a bit - but do not , by any means beat on my car. I have 21K and never has anything but the sunroof button thing given me any problem. Thanks for any input.

 

you really dont need it unless your doing some serious auto-x

 

I talked with CED about this. The best we could come up with is that these are strictly a GM Racing part, not a GMPP part (there is a difference). None of us are 100% sure, but they may be the same steering knuckles off of the Time Attack Cobalt. This means they are ready to accept the Grand Am hubs that they used. I don't think they are needed for a daily driver. Now as far as I know there are no lower arm upgrades available. The SS/SC already has the aluminum control arms, that itself is the upgrade for the other model lines (the SS 2.4l has them too).

I think you just got a case of the dealer suffering from "head-up-ass" syndrome. Unfortunately, it is a common sickness and is very prevalent in service writers and few technicians. The only known cure is a heavy dose of "hands-on experience" and can be found in any real performance shop (sold in small quantities).

 

I'd vote the same, if you were doing serious auto-x. You cant run stock class caus of your mods so that puts you in a street class, whitch you have to run a 140 and up treadwear (harder less sticky) tire.

Unless you were going into a full mod class with all those upgrades you have now, to be able to run a Hoosier Slick. ( 40 treadwear ) To really be compeditive youd be doing things like KW Virant 2 Coilovers and all kinds of suspension work.

Regular roads no matter how good the pavement on street tires shouldn't have enough grip to exert those kinds of forces.

 

Great info, Thanks for the response. This is what makes me turn to the forum when in need of answers and opinions. Thanks