As performance levels increase, an O.E. style flexplate just won't cut it and a stronger option is a necessity to prevent transmission and/or converter failure. B&M has you covered with our high performance flexplate designed for 1971-up Chrysler, Dodge and Plymouth 383, 400 and 440ci (externally balanced cast crankshaft) V8 engines with A727 transmission. Features include high tensile strength steel construction to resist elongation and cracking, 10.00 and 11.125 in. bolt patterns and comes with SFI 29.1 safety certification insuring the ultimate in safety and performance. The assembly is then Zinc plated and treated with a Chromate Conversion Coating for added corrosion resistance and durability. B&M SFI approved flexplates are ideal for extreme duty race applications as well as street cars, tow vehicles or other vehicles needing the added protection and toughness that B&M has been delivering since 1953.