90 Corvette Engine Internal or External Balanced?
Thread Starter
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
90 Corvette Engine Internal or External Balanced?
Maybe someone up here can help. I work on the old ones mostly, so I dont usually get into these, but here is the deal. I am changing out and engine for a customer. (90 Corvette) It had already been replaced with an engine out of a 90s Suburban. The flex has a weight like an externally balanced engine. I dont know if that is the Corvette flex or the Suburban. It had a little shake before, so it got me thinking. Maybe they used the wrong flexplate. I wouldnt have thought that they would be different, but maybe. There is no part number on the flexplate.
Pro
Joined: May 2007
Posts: 638
Likes: 1
From: Robesonia Pa
I made the mistake of putting an externally balanced flywheel on an internally balanced motor once. It did not shake a little - more like the whole vehicle shook very bad. A little vibration IMO is from another source . just my .02
Thread Starter
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Race Director
Joined: Jan 2008
Posts: 16,028
Likes: 170
From: oregon
so what happens when people change to the LT1 camaro flywheel on a stock motor? i know this motor had that done with the rotating assembly balance but how about stockers that just go single mass?
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
New flywheel needs to be balanced the same as the one being removed
