i baught a 65 mustang(289) from a guy and the engine was sizied so i got a engine out of a 86 mustang(302) and i was going to put back together with te balencer off of the 289 so i wouldnt have to buy a new pulley. ive been told that it that it has to be 56oz or somthing like that but i looked in summit and they have all diff. weights. i was woundering if yall could advise me on this? Also im planing on using the old fly wheel but i dont know if it has to be a certain weight and will the distributar out of the 289 work in the 302?

 

You need a 50oz damper. You'll probably have to change your crank pulley to a 4-bolt as well. The dizzy will fit no problem.