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Open Diffy racing.... any tips?

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Old Jan 4, 2004 | 12:24 AM
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Talking Open Diffy racing.... any tips?

Basicaly jsut competed in my first autcorss in about 9 months, missed it a bit, I forgot what it was like to race with an open diffy, my old camaro had LSD, and my current car does not and I am thinking I might try to stay in Stock classification.



What tips do you guys have for a bit of LSD racing?


Today in my driving, I noticed hard rights, were the hard turns, the inside right rear woudl lose traction, but the car woudl not rotate...

On my last run I came up with an idea, and ran high pressure in the left rear 35psi, and the car rotated a little better on hard rights...


Think I should aim to overinflate it some more?

Left turns are not so bad but not ideal.


Thanks for your your guys help!
Old Jan 4, 2004 | 08:27 AM
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V6 Camaros were available with an LSD, so you could get one and still run stock.
Old Jan 4, 2004 | 12:11 PM
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Stock doesn't allow update/backdate, though, so to use it you'll have to convert entirely to the model/package that used it.

In other words, if the LSD was only available in a "performance package" that also included different springs, brakes, "ground effects" or whatever, you need to install everything, not just the LSD. That isn't necessarily bad, just more time and money.

I don't remember what the V6 options were, so this is just a heads up. You need to research the available options before you buy.

Also, you can only upgrade to an LSD that was available in your model and year (or the model yopu convert to), so you can't use a T2R. You also can't use a T2 if the Auburn was the only available option for your year.
Old Jan 4, 2004 | 10:06 PM
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Originally posted by t.renz
V6 Camaros were available with an LSD, so you could get one and still run stock.
Basically what the guy above me mentioned...


The optin you are talking about is Y87

It offers
-4 wheel disc(doesn't apply to 98+ since they all had 4 wheel disc)
-3.42 for autos over 3.08s
-Lsd
-dual outlet muffler, I think its the same design as a Z28 muffler(I wouldn't mind putting one of these on
-and the one part I don't really feel like changing just yet, is the steering rack it has a tighter turning radius steering rack


Stuff I might do one day but not right away...
Old Jan 5, 2004 | 12:13 AM
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"The option you are talking about is Y87

It offers
-3.42 for autos over 3.08s
-Lsd
-dual outlet muffler, I think its the same design as a Z28 muffler(I wouldn't mind putting one of these on"

Is there an autocross club that cares what muffler you use?

"-and the one part I don't really feel like changing just yet, is the steering rack it has a tighter turning radius steering rack"

The rack just changes the steering ratio, not the turning radius. It means you have to turn the wheel less, which should be an advantage. I don't blame you for not wanting to change it, tho.

If it were me I'd be worrying more about accelerating off the corner than rotating the car. I'd run a soft rear for traction and live with the understeer by entering the corners a bit slower.
Old Jan 5, 2004 | 12:25 AM
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Well the plan is to stay in a "stock" class

rules in this club say must be factory stock or oem repalcemtn stock.

I don't really care about changing the muffler, but few hp would be nice...

But to be in stock, I have to do the entire upgrade package, which is still 3.23s for my 5-speed, but has lsd, better muffler, and the steering rack. like I said I could care less about the muffler, relatively easy, but the steering rack, bit of a bitch, but I woudl have to do it to stay stock. I might just stay stock for a bit then later move up ot prepared...

And accelerating out of corners is sort of the problem... I have a hard time doing it on hard rights... I am running stock rear sway with a 17mm, so the rear is pretty soft, I even kept jack and spare in hoping it will help weigh it down, but the right rear kept losing traction, I tired to compensate a little with featehring the clutch, and letting up on the gas.

left turns are not really a problem...


Maybe I should run NASCAR... and do all left turns
Old Jan 5, 2004 | 09:10 AM
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Eric,

I would try to get a 35mm front bar if I were you. Watching your car go around the course it looked like it had a ton of body roll. So much so I bet the bigger bar would help traction coming out of corners by keeping the inside rear planted better.

According to Chuck the front bar won't knock you out of stock either.
Old Jan 5, 2004 | 10:35 AM
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i thought the lsd was an option all by itself later on
can't remember but g80 or something sounds right as the rpo for just lsd
so couldnt you throw that in and still remain in stock class?
Old Jan 5, 2004 | 10:59 AM
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I fit was available on that year and model car and was an option all by itself, yes.

If you just run local events I'm sure no one is going to complain. I know with the SCCA the V6 F-Body's run G-Stock and are generally not too competitive in that class anyway. So it's not not like you're going to add the diff and run off and leave everyone. No offense intended,
Old Jan 5, 2004 | 11:03 AM
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I went back and looked, there was a V6 '99 Camaro that finished 6th at the nationals in 2002 abut none ran in 2003.
Old Jan 5, 2004 | 02:12 PM
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Originally posted by Soma07
Eric,

I would try to get a 35mm front bar if I were you. Watching your car go around the course it looked like it had a ton of body roll. So much so I bet the bigger bar would help traction coming out of corners by keeping the inside rear planted better.

According to Chuck the front bar won't knock you out of stock either.
I still find it odd going to a 355mm front woudl still be st0ock but I couldn't even remove my paper air filter... I woudl want ot look into it further...

And yeah I know body roll is bad on this car... I coudl feel it defineitly waaay over my old 94 with 1LEs, and bad shocks

hehe don't worry I know v6 f-bodies are not ideal for autocrossing But they are still manual RWD cars... shich helps a little...


The option code is G80 but I ma not sure if it coudl be a stand alone option in itself, I know 3.42s, coudl be and it was usually associated with the Y87 package but it was not on some y87 cars..
Old Jan 5, 2004 | 02:15 PM
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In the SCCA you can change the front bar and the air filter. You can even put a CAI on. AND you can change any part of the exhaust past the cat and still be stock. Oh yea, you can also run Hoosier's or Kumho's too!
Old Jan 5, 2004 | 02:51 PM
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Originally posted by bruecksteve
In the SCCA you can change the front bar and the air filter. You can even put a CAI on. AND you can change any part of the exhaust past the cat and still be stock. Oh yea, you can also run Hoosier's or Kumho's too!
Er, you can do the front bar, and a different filter, but you can't change the airbox, install a CAI or a lid. Sorry.
Old Jan 5, 2004 | 02:53 PM
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Originally posted by bruecksteve
I went back and looked, there was a V6 '99 Camaro that finished 6th at the nationals in 2002 abut none ran in 2003.
He also led a day @ Nationals, I think the year before...
I helped with setup work on that car.

FWIW, this is one car when prepped for stock that I would not use a 35mm bar on. Because you can't change the rear bar out, you end up with too much of a disparity. I use(d) solid 32's on the V-6 cars for GS, and that's what we had on Edwin's car (the one mentioned above).
Old Jan 5, 2004 | 02:57 PM
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I don't know every detail for the Y87 vs. the stock one. All the ones you listed are mostly correct, but there maybe some other small things that Y87's had that normal cars didn't, like maybe different springs. You have to convert the whole car to Y87 specs for it to remain SCCA stock-class legal. The exhaust doesn't matter, as mufflers are free. As far as I know the Y87's had 3.42's with the 5-speed and the diff. Diff's are cheap, if the car has 3.42's that's a done deal. You need only install a LSD, and check your springs and bushings are legal (I think they are). At that point you slap some good shocks on, a bigger front bar, race tires and you have yourself a Nationally competitive car.



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