Bent frame

[TurboTnZ06]

Anyone else put their car up on jacks on level concrete and only 3 of them touch the frame? The right rear of my frame must be bent upwards about 1/4 inch

 

[slow305]

Too many wheels up launches.

 

[TurboTnZ06]

Too many wheels up launches.

The only time the wheels got in the air was with a floor jack. I used to make a ton of runs back in the day on the old motor trapping 122-127mph, but all soft launches 1.6-1.7 60 foots. Enough to break an axle though. Maybe its because I pulled the rear end out it's not tied together up in the air?

 

[klrv6]

Are you 100% sure the floor is level? Take string and bubble levels at the top of each jack stand to make sure. I would put our buick up on stands trace on the floor exactly how it was sitting and then move the car and check with levels.

 

[87 Pete]

It might be that the car is twisting because it is not exactly evenly supported. If you ever just jack up a corner of your car it seems like everything bends and twists quite a bit.