upgrading JUST sway bars...

[V6Bob]

The stiffer end of the car slides first, because controlling the roll unavoidably transfers more weight to the outside tire.

It's one reason why you can actually have too much roll stiffness, overall.

In no way is it "my" theory :D

[FirebirdGT]

<blockquote>quote:</font><hr>Originally posted by Seppo Kaitainen:
In the recent yrs the actual 1LE sways have been 35/21. Thats the set up I plan on running on my TA.<hr></blockquote>


Sorry, no.

GM never offered a 35mm front sway bar, and the 21mm rear ONLY came on the 93 1LE which had stock V8 springs.

[Seppo Kaitainen]

<blockquote>quote:</font><hr>Originally posted by FirebirdGT:
Sorry, no.
GM never offered a 35mm front sway bar, and the 21mm rear ONLY came on the 93 1LE which had stock V8 springs.<hr></blockquote>

My mistake, your right. The SLP 1LE was 35/21.

[FirebirdGT]

<blockquote>quote:</font><hr>Originally posted by Seppo Kaitainen:


My mistake, your right. The SLP 1LE was 35/21.<hr></blockquote>


Sort of - the 35mm was used on the SLP suspension package RPO Y2Y, which came with Bilsteins and custom SLP springs.

http://www.slpeng.com/2002firehawk/index.html

[ September 20, 2002: Message edited by: FirebirdGT ]</p>

[Seppo Kaitainen]

<blockquote>quote:</font><hr>Originally posted by FirebirdGT:
Sort of - the 35mm was used on the SLP suspension package RPO Y2Y, which came with Bilsteins and custom SLP springs.
http://www.slpeng.com/2002firehawk/index.html
[ September 20, 2002: Message edited by: FirebirdGT ]<hr></blockquote>

The 35/21 came on both level one and level two suspensions(aka "1LE") on the SLP cars. It would be interesting to find out why the SLP 1LE was different than GM's.

[V6Bob]

"It would be interesting to find out why the SLP 1LE was different than GM's."

35/21 (1.66) and 32/19 (1.68) are pretty close. In order to understand what the difference is you're going to need the inner diameters of the hollow bars and the spring rates.

The SLP bars are probably stiffer (the inner diameter thing could create a surprise, but it's not likely), so would work a bit better on dry pavement or at high speeds while a softer setup would be better in rain or at slower speeds.

[FirebirdGT]

<blockquote>quote:</font><hr>Originally posted by Seppo Kaitainen:


The 35/21 came on both level one and level two suspensions(aka "1LE") on the SLP cars. It would be interesting to find out why the SLP 1LE was different than GM's.<hr></blockquote>


I don't know where you are getting your info, but the Y2Y suspension is NOT aka 1LE.

Although the SLP 1LE and Y2Y use the 35/21 they differ in spring rate and shocks. BTW the 35mm is not a GM part, but SLP.


http://www.hoodscoop.com/suspchart.htm

[Seppo Kaitainen]

SLP Y2Y -&gt; level one -&gt; Bilstein package
SLP 1LE -&gt; level two -&gt; 1LE package

My point was just that SLP's 1LE is not the same as GM's 1LE. Maybe b/c a differnce in wheel/tire size?

[F1GT]

<blockquote>quote:</font><hr>Originally posted by V6Bob:
"It would be interesting to find out why the SLP 1LE was different than GM's."

35/21 (1.66) and 32/19 (1.68) are pretty close. In order to understand what the difference is you're going to need the inner diameters of the hollow bars and the spring rates.

The SLP bars are probably stiffer (the inner diameter thing could create a surprise, but it's not likely), so would work a bit better on dry pavement or at high speeds while a softer setup would be better in rain or at slower speeds.<hr></blockquote>

So, going back to the original post's question: Wouldn't 35/19(1.84) be the best choice if you have 28/15(1.87) and stock springs/shocks from the factory??
[img]graemlins/burnout.gif[/img]

[Guardsman]

<blockquote>quote:</font><hr>Originally posted by F1GT:


So, going back to the original post's question: Wouldn't 35/19(1.84) be the best choice if you have 28/15(1.87) and stock springs/shocks from the factory??
[img]graemlins/burnout.gif[/img] <hr></blockquote>

Yes, 35/19, or 32/19 would probably be about the same, as long as the 35mm bar is a hollow bar, not solid. If the 35mm bar is solid (I'm not sure if SLP's is), then it's a whole different ball game.