Finally got my first third gen 87 firebird 6cyl needs a bit of work but its all mine .

its got a brand new motor in it new tranny exaust and a new rad

its got a bad vibration when i dirve it whole car shakes likes a b$#@% but i'm not to worried.

anyways thought i'd share my recent buy will all you guys

 

Car shakes? Driveline needing balancing, perhaps?

Does it shake only when moving, or even when parked, and idling?

 

only when i'm driving it and it gets a bit better the faster i go

 

Try doing this.

When driving down the road and when its safe to do so put your car in Netural, completely let off of the gas pedal and just coast.

Is your car still vibrating? If it isnt then your Drive shaft is probally out of balance or you might have a rear end problem.

If it is vibrating when coasting then you could have a wheel out of balance or a possible rear end problem.
You can go to any tire shop and have them balance your rims. Shouldnt cost more than 10.00 to do that. Depends on the though.
Its also possible that one of your tires has a knot in it. Nothing but a replacement tire can fix that. A knot in a tire will make any vehicle shake and shimmy like crazy depending on how sever the knot is.

Welcome to the boards

 

i actually never thought of that as far as rear end goes the car moves pretty damn well it just shakes pretty bad it had a new engine and a new tranny put in it it seems to be drivetrain is the most probable cause as it goes away after a while

 

just saying high and welcome to boards.

Everyone else seems to be pointing you in right direction on problems, and at this point have nothing to add.

 

i appreciate the welcome and yeah the guys on this site are great (and the chicks out there) i've always been a big third gen fan