What can be causing this vibration?

[ricksmol]

Finally finished installing the T5. Big vibration problems. In neutral and with the clutch depressed, I hit the gas and a very strong vibration shakes the whole car. This makes me think either the flywheel or the pressure plate out of balance. Now the pressure plate is brand new RAM unit. The flywheel I had resurfaced but never thought of checking if it was in balance.

The flywheel I have is a 9 inch flat face. Bolted it according to specs. Used locktite on the bolts.

I remember reading somewhere about 6 cyl and 8 cyl flywheels having to perform different balancing functions because of the natural harmonics of the engine.

so...
#1 Does anybody have any ideas as to the source of the vibration?
#2 Where can I get a brand new 9 inch flywheel with guaranteed balancing?

Besides the shaking, the car has an amazing performance and the clutch mechanism works good.

Rick

 

[ricksmol]

Good news! Found out that the shifter box was jammed tight against the tunnel. Cut out a piece of the tunnel to free the trans et voila! no more shaking. Seems the trans was not true because of the jam up. She runs sweet now! More news later.
One silly question... my oil pressure has gone up from 40 lbs to close to 60lbs at 2500 RPM. Never touched the gage,or the sensor what gives? I am ecstatic about this.Can the change from C4 to T5 have this effect?
Rick