CAN ANYONE TELL ME IF I NEED A 28OZ FLEXPLATE OR 50OZ ITS A 302 BASED 331 WITH A C-4 TRANS ITS GOT AN EAGLE ROTAITING ASSEMBALLY IF THAT HELPS ANY?

 

You need to match the flexplate to the balance of the engine with Eagle FORGED CRANK it should be internal balance and therefore neither. It would use a neutral balance Flexplate. IF you have the cast steel crank it would be 28oz. You need to check with your engine builder, he should have balanced the rotating assembly with the Flexplate you intended to use.

 

who built your engine??? you should ask them

 

to many possibilities but the most likely is 28 oz and possibly nuetral, so find out who built it and ask them