Z pulls to right while shifting
 

My car is a 6 spd. manual transmission. I am on BC racing suspension. Recently I had an SPL rear camber kit installed, an alignment done, all new tires, and upgraded wheel size from 18" to 19".

I noticed that when I am accelerating, every time I shift and then give it gas, the car pulls to the right a little bit. It didn't used to do this before. It was still pulling to the side before the recent alignment and rear camber kit installation. It was not doing that when I was on my OEM stock wheels and lowered suspension.

I don't know what the problem might be.

Any ideas? It's kind of annoying that I have to slightly straighten the steering wheel when shifting. The pull is more noticeable when I step on it a little harder.

Note - there is no pull when I break, no vibration, and very slight (almost unnoticeable) steer wheel shake at cruising speeds (70mph+).

Stop breaking stuff!!

I'd start with the simplest stuff first. Swap the tires left/right on each axle. Assuming you're running asymmetric tires this should be fine. If the pull changes then you know it's the tires. If not, then start exploring suspension & alignment.

Edit: By tires I mean wheel/tire units, don't actually dismount the tires from the wheels, just rotate side to side on same axle.

Jsolo has the right idea - makes some changes to the car and see how the behavior changes (or not). Swapping tires is pretty easy as long as the tires will permit (not uni-directional).

The first thing that came to my mind was some play in the rear suspension - tire(s) getting out of alignment when under heavy load.

Can you tell if it's the front or the rear pulling? If you can determine that, you will eliminate a lot of possibilities.

Check the preload on the rear shocks. Specifically the right rear.

So much torque the chassis twisted off the line?

On a Z? We wish.....:bowrofl:

Check psi and ride height. Ur left rear height is a tad low probably.

Have the car corner balanced.

The height on both sides is the same. I measured both sides before getting the last alignment done.

I think this might be the issue. Thanks!

being a base model it doesn't have the LSD, could the pulling be caused by the torque of the one axle grabbing the pavement and the other side just following along,,just a wild guess.