Quote:

the cut out on the b&m flexplate is the same as having weights on it...
the older flexplates had a weight...the newer externally balanced flexplate has a cut out..NO Weights...but the part number will tell ya what it fits...


WRONG!!!! No early flex plates had weights. OEM. Whether for small block or big block. Period!!!! There were to 2 sizes of flex plates used depending on the converter used. Either could be found on 727 transmissions. But NONE were weighted, only after market flex plates were weight compensated. OEM converters had compensating weights welded to them.