flywheel help

02mustangbb

New Member
May 7, 2004
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hi guys you all have gave me good info in the past i hope you can help me out now. we took out my buddies 94 302 motor and put in my rebuilt 71 302. everything went well in the exchange. it started up and ran but once it got above 3500 rpms it has a bad vibration in it and i got to thinking we put his flywheel and clutch in and the two flywheels have differnt wieghts for balance so i need to put my flywheel and clutch to balance the motor out? and if so what do i do about them being differnt sizes and working witht the starter(starter teeth not reaching flywheel cause its smaller) any help would be much appricated