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**passthebuck** · 02-06-2012, 08:09 AM

Dan, where did you get the flex plate that currently is on the 454? The 454 is externally balanced & requires an externally balanced flex plate (or flywheel in the case of its previous life in the 83 1 ton). The lack of that wee little balance weight on the flex plate will give you a bunch of weird vibes for sure...

02-06-2012, 08:09 AM	#18
passthebuck Sisyphus was my mentor! Join Date: Sep 2002 Location: Carleton Place, Ontario CANADA Posts: 984	Re: Engine Upgrade on my 71 ! Dan, where did you get the flex plate that currently is on the 454? The 454 is externally balanced & requires an externally balanced flex plate (or flywheel in the case of its previous life in the 83 1 ton). The lack of that wee little balance weight on the flex plate will give you a bunch of weird vibes for sure... __________________ passthebuck #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car