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'05 Chevy TB EXT
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5,156 Posts
Typically for an '06, '07, '08 TB

Camber= -0.50° ± 0.60°
Cross Camber= 0.00° ± 0.60°
Left Caster= 4.25° ± 0.60°
Right Caster= 4.25° ± 0.60°
Cross Caster= 0.00° ± 0.60°
Thrust Angle= 0.00° ± 0.40°
Toe (Total)= +0.20° ± 0.20°
Steering Wheel Angle= -0.50° ± 3.50°
 

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2003 TB LTZ
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51 Posts
Typically for an '06, '07, '08 TB

Camber= -0.50° ± 0.60°
Cross Camber= 0.00° ± 0.60°
Left Caster= 4.25° ± 0.60°
Right Caster= 4.25° ± 0.60°
Cross Caster= 0.00° ± 0.60°
Thrust Angle= 0.00° ± 0.40°
Toe (Total)= +0.20° ± 0.20°
Steering Wheel Angle= -0.50° ± 3.50°
What's the differences for earlier models? Mine is an '03 but I didn't realize there were suspension differences in the later models
 

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Premium Member
'05 Chevy TB EXT
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5,156 Posts
I've been running an ongoing research project concerning our TBs and their cousin cars ... 'cause I own one of them now for better or worse.

So far --- I've noticed that there is no difference in the SETTINGS of both 2WD and 4WD vehicles --- nor, for that matter, in the EXTs v standard wheelbases.

Now --- I see that last line as a problematic thing in that if the steering geometry is set for a short wheelbase and those numbers are no different than the longer EXT wheelbases --- then either: one will plow or the other will understeer.

OK -- that aside --- we know there is a difference in 4WD v 2WD suspension parts and pieces --- but the alignment numbers are set in the physical laws of steering geometry, not the physically evidentiary aspects of that system.

It's no big mystery because tire wear and handling are all in the geometry and tire rubber compounds and the last time you gave her a wax job ........
 

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Premium Member
'05 Chevy TB EXT
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5,156 Posts
Ummmmmmmmmm...

Camber= -0.50° ± 0.60°
Cross Camber= 0.00° ± 0.60°
Left Caster= 4.25° ± 0.60°
Right Caster= 4.25° ± 0.60°
Cross Caster= 0.00° ± 0.60°
Thrust Angle= 0.00° ± 0.40°
Toe (Total)= +0.20° ± 0.20°
Steering Wheel Angle= -0.50° ± 3.50°

.... would be wonderful on most vehicles unless there's a serious weight shift in fore-aft ratios and that's only to prevent over- or understeer.

Cross camber is likely one of the only differences and that's for that weight bias --- but since you're on the same basic frame --- I'd do it in a heartbeat if I didn't have the exact specs.

The positive toe {Toe (Total)= +0.20° ± 0.20°} is for the steering linkage being BEHIND the wheels, so there's that too.
 
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