\That's how I managed it. I had the flywheel match balanced to the flexplate. Engine runs smooth as silk. The other problem you may encounter here is that a 343 flywheel will not match up to a 72 or newer crankshaft. AMC changed the configuration of the crank flange in 72. I-6 engines are internal balance but some of the flywheels fit V-8s. Some one here knows more about this than me. It took me two years to find a flywheel that fit my 70 304. Armand ----- Original Message ----- From: <Wrambler242@xxxxxxxxxxx> To: "AMC/Rambler owners, drivers and fans." <amc-list@xxxxxxxxxxxx> Sent: Friday, June 08, 2007 7:35 PM Subject: Re: [Amc-list] t10 4spd differences > That's always the best way. > Lacking the apartness of the subject engine having the flywheel match balanced to the existing flexplate or flywheel is second best. > > -- > Mark Price > Morgantown, WV > 1969 AMC Rambler, 4.0L, EFI, T-5 > " I was different before people dared to be different" > > -------------- Original message ---------------------- > From: David Crooks <david.crooks@xxxxxxxxxxxx> > > Hi Bryan, > > > > I would expect you will have vibration on a 290 or 304, due to the > > different weight of the pistons. As for a 360, I'm less certain... > > The bore is the same, just the stroke is different. If the 360 pistons > > are the same weight as the 343, you might get away with it. > > > > That being said, I'm a strong believer it taking the whole mess into a > > decent machine shop and getting them to balance it. Then you know for > > sure, BEFORE you've got the engine in the car! > > > > Cheers, > > > > Dave > > > > Message: 2 > > From: teamamc <teamamc@xxxxxxxxxxx> > > > > I am buying a 1968 T10 4speed. From a javelin. > > > > What are the differences between the 1968 and the 1973 4speed. > > > > Comes with a 343 fly wheel. > > > > Will I run into vibration problems with if I install on a 290 or a 360 > > > > Thanks > > > > Bryan > > > > _______________________________________________ > > Amc-list mailing list > > Amc-list@xxxxxxxxxxxx > > http://www.amc-list.com/mailman/listinfo/amc-list > > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://www.amc-list.com/mailman/listinfo/amc-list > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.472 / Virus Database: 269.8.11/838 - Release Date: 6/7/07 2:21 PM > > _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list