Differences in Caster

[Albertcado]

What is an acceptable difference in the front casters between left and right sides (stock suspension) ?
Example, if left side caster is 6.7 what is the biggest difference the right side can have without being an issue?

My dealership had to remove the front subframe to swap out the shortblock and when I got the car back I noticed the front driver side wheel is now slightly more towards the front of the wheel well (front bumper) and the passenger side wheel is still perfectly centered (even gap all the way around the fender)
The steering wheel is also off center so to go straight it needs to be turned to the left a bit. PITA is that I just had a great alignment before my new shortblock delivery showed up.

I'm getting a reading at my performance alignment shop soon and he said he'll know based on the reading if the subframe is way off or not.
From what I've heard, there isn't much tolerance (maybe millimeters) in the front subframe bolts so any manual nudging or moving will just be by eye and probably not worth the trouble?

I know there are lots of mustang owners with strange uneven wheel well gaps who just accepted it and drove it.
Either one wheel will be too forward the front fender or too back.

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[Avispa]

About 1/4 degree cross-caster is a good upper limit. If the driver side wheel is shifted forward, that should give higher positive caster than with the wheel centered, given that the upper strut mount position doesn't move with the subframe.

 

[Albertcado]

About 1/4 degree cross-caster is a good upper limit. If the driver side wheel is shifted forward, that should give higher positive caster than with the wheel centered, given that the upper strut mount position doesn't move with the subframe.

Is it possible that the subframe that was moved and put back caused it to get off center? Is there an easy way to correct the wheel back to the center of the well?

 

[Albertcado]

Is it possible that the subframe that was moved and put back caused it to get off center? Is there an easy way to correct the wheel back to the center of the well?

Maybe loosen the front subframe bolts and nudge the side little by little until both wheels are centered in the wheel well?

 

[Avispa]

Not sure on an S550, last one I pulled was on a New Edge, and on those you could adjust them a bit. It would be worth a trip back to the dealer to show the wheel location mismatch and make them adjust it in their body shop. The body shop should have the equipment to put the subframe back where it belongs.

 

[mustangpegasus51]

@Albertcado if you end up finding a body shop willing to do this let me know! I'll be looking to this possibly as well.

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