Thread: Very specific vibration range

I recently had a new HD transmission installed in my '01 GP Gt from tripleedgeperformance and i've noticed that since I've been able to drive it again that the front end vibrates from 40-50 MPH, the worst is from 40-45 MPH. It seems to be regardless of the gear being used or RPM speed. To put in the supercharged transmission in my car the passenger CV axle had to be replaced and the driver side was inspected to my knowledge. Any idea as to what it could be?

I haven't actually tried that yet, oddly enough it hasn't done it today at all. I was thinking it was the tire alignment since it's off. I'll try neutral though!

It happens the worst when accelerating up hills and I can't really hit neutral doing so. But I did shift into neutral when it did it a multiple times on straighter stretches and it definitely still vibrated the same amount.