NickBatman

I have a 2002 z28, when I take off from a dead stop quickly there is a knocking/Rattling noise coming from under the drivers seat. I can feel it right under my feet. Not sure what it is. If I drive normally it's fine, but if I take it off from a stop hard it will knock under my feet.

Cpt.Derrek

iTrader: (13)

check the clearance of the exhaust pipe. sometimes if the pipe has been bent it could hit the floor board.

BMR Sales2

iTrader: (40)

I agree that it sounds like the exhaust is hitting the floorboard. It could possibly be from the motor mounts being wore out but you will have to get under the car and see what is going on.

NickBatman

Will do, guys. Thanks. I figured it might have been a motor mount, but the exhaust does look really close to the floor. If there's any other ideas I'd love to know though.

FirstYrLS1Z

iTrader: (4)

as the motor/trans rotates/shifts in a clockwise(viewed from rear),it'll raise the driver's side and lower the passenger's side exhaust components.

HumanNipple

iTrader: (2)

You're not cool until you have an exhaust piece bang on the bottom of your F-body, welcome to the club.