84 trans am
suspension specs in sig

I was wondering if it is possible to set a small amount of negative camber on my front wheels.

 

Negative Chamber is when the top of the wheel is closer to the center of the car than the bottom of the wheel. Factory settings had several degrees of negative chamber already. Road racers most of the time will move the top of the strut as far in as it will go and go race. If you're talking about going the other way, positive chamber has an adverse effect on handling as it makes the car not want to drive straight. Not only does negative chamber help to corner, but it also creates a steering torque which makes the car go straight.

 

Just specify the specs you want to the alignment tech and they can do it. The max I can usually get is around -.75 camber. FYI, stock specs have positive camber.

 

The specs vary with the OEM tire and wheel. 84 specs with a 15x7 and a 215/65 are quite abit different than the IROC's with the 16x8's and 245/50's

 

Im having ROH Snypers (17x9) and Kumho Ecsta Supra 712's in 275/40/17 installed on all 4 corners.

the car definatly has either 0 camber or positive camber with the tires and rims that are on it (15x7 and 235/60/15)

 

i would refer to guldstrand or ground control for reccomendations. with a wide stiff tire you would probably want less camber but still with the tires tilted in at the top

 

No sht? That's ridiculous. I always just assumed that it would have around 1 degree negative. Do you suppose the stock spec is to make the car more pushy? You know, insurance reasons and all that.

 

probably, i'm at about .8 or so thats the most they could get. I think i could use 1-1.2

 

right now I have about -1.5 camber...although thats also caused by the fact that I have a 3" drop. I really hope I have some free cash soon so I can pick up the GC units. I wanna probably make it around -3 or so

 

No, they did not. I have yet to see a factory spec sheet for a thirdgen that specifies negative camber. Negative caster, yes, but not negative camber.

Edit:

(whoops, never mind, I goofed, I forgot which direction was negative for caster--factory specs are positive camber, positive caster, and positive toe)

Anyhow, stock specs are 1*+/- 0.5* positive camber, 3* +/- 0.5* positive caster, and .15" +/- 0.05" positive toe (the FAQ says degrees but toe isn't measured in degrees the last time I checked).

More than 1* negative camber is excessive on a street driven car and IMO will cause excess tire wear. A good setting is probably about half a degree of negative camber, unless you drive agressively, then you could go for a full one degree.

Keep in mind the factory rubber bushings in the strut mount deflect quite a bit as they age. In fact, my car had a problem with wearing the outside edges of the tires with the factory specs and worn stut mounts. This is because on a hard turn, the worn mount will allow the outisde tire to "roll over" a little.