Seems to be few folks using these, but it's what I have. So I'll ask away...

Mods include Bilsteins, poly bush f control arms and trailing arms, VBP radius rods, EBC Greenstuff pads, stock L48 (intake, carb, exhaust changes including headers), TH400. Stock aging springs and front sway bar only. Been fairly reliable. Just added 93 Sawblades with Hoosiers. Now it's somewhat competitive at the local AX level. However it ROLLS a bit and sits too high IMOP.

Haven't been to a track in 8-9 years and then it was with FWD VW purpose built for these situations.

I am thinking of doing COM in the Northeast. So that means NHMS, Mont Tremblant, etc.

Was thinking 360# rear composite spring. Stiffer fronts (though not sure of rating--500 maybe?) and sway bars front and rear.

Want to install a roll bar (not a full cage)to stiffen chassis and provide anchors for harness. I was thinking a main hoop with two rears bars and two door/side bars.

Brake upgrades have me confused/intimidated/unsettled. Stock is pretty good with the EBC pads for autocross and street, but have the dreaded soft pedal after a while. Most likely due to rotor run-out pulsing pistons. Would sleeved and o-ringed calipers be adequate for the occasional track day? Wilwoods would be dandy but pricey. Seen a few upgraded to C5s, but wonder about master cylinder capacity and ability.

Power steering is stock mostly new (save for the pump and box). Has the factory "free play" built in! Am looking at Grand Prix rack conversion for feel and price.

Can't do all things at once. Am thinking the brakes should be my first consideration, then steering.

Any thoughts on the TH400 for the occasional track day? Has aftermarket trans cooler in front of radiator. Shifts firm at the autocross.

As an aside, I do have a 95 Lt1 in pieces in need of rebuilding on the bench and the 4L60e that goes with it for future considerations.

Any suggestions? Thinking next year mostly. I'd like to do at least one track day.

Thanks,

George

 

Might want to try the tech section for this, you'll get more responds

 

You will definitely get more responses in C3 tech than here, which should give you specific info relative to sharks you're unlikely to find in the Auto-X & RR forum either.

That said, for starters I'd read the following if you haven't already...

http://www.corvettefaq.com/c3/ChevyPower.pdf
http://www.corvettefaq.com/c3/vip.pdf

...tho poly is fine for anti-roll bar and front control arm bushings if you wish to keep a little compliance for the street. Sorry, I just don't have anything positive to say about automatic transmissions for auto-x'ing or road racing. Anyway, IMHO digesting the above should help you ask the best questions over in tech.


TSW

 

I've been a member of COM for over 10 years.

I suggest you just bring the car and drive it. You start making mods and you're going to be pushed in the prepared class and then you'll be required to have a roll bar, 5pt belt and fire suit. These guys are very strict about this. You need to tell them its stock unless you have something blatantly obvious.

 

I used to autocross from 1972 to 1982 and i used to add shems to my front supension and that would change the camber also has adjustiable strut rods to change the rear camber. The tires i ran were Housier street tds which was a street legal gum ball tire. My car ran in a stock class and i took it to the track on a car trailer.