Flexplate exchange rebalancing

I have a question Iàm gonna change flexplate to an SFI approved one do I need to rebalance the rotaing assemble once again if not which brand or kind of flexplate will I look for int, ext. one any suggestion appreciate. Thanks Melvin

Look at the sawblade that you have. IF there is a weight on the front(engine side) of it...it's EXternal balanced. IF there is no weight...it's INternal balanced. If internal, just bolt in an un weighted flexplate. If it's external...buy one with the weight and have your balance guy "match balance" it to your old one. Done Deal.

Iàm sorry that it got confused the rotating assy is internal balanced and the flex plate that have in it now had to be drilled when I balanced but that is the stock one but now I want to exchange to a SFI approved one (regulations say so )so if I understand this right I can bolt in an intenal flexplate and then good to go . Thanks Melvin

Your balance guy can "match balance" the new to the old.

Well thats make it very clear thanks for the reply chuck. Melvin