hey guys... I know that the gods will frown on me for posting this here... but I know a lot more people are in this section then drivetrain... and I need an answer by morning or I'm screwed... here's what I posted: (I have an LT1 ... but I just hope someone can help me!)
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Hey guys.... I'm in a total panic right now... here's the deal

I ordered my Mcleod street twin off of ebay... it came complete in the box as stated... took it to my chevy guy down the street and he installed...

Now i have the most horrible vibration almost anywhere in the power band... but really really bad above 2000 rpm

Because the kit came all together, I assumed that the flywheel and everything were balanced... was I wrong in this assumption???? I hope this is the problem, becuase I'm pulling it out again w/ him tomorrow afternoon... and I'm pretty much clueless right now... please help.. I have to have my Z back on the road by this weekend!!! (the whole car shakes... its almost violent

Thanks as always guys!

 

DO NOT DRIVE THE CAR LIKE THAT.

It's probably a pilot bearing that got ****ed up in the install or the flywheel outta balance. The same thing happened with my 396..it shook so badly that it broke the oil pump shaft that runs off the cam.

Mike

 

Pilot Bearing.