SFI Flexplate Ext Balance '71-On Chrysler 383-440 w/ A-727 Trans

B&M SFI FLEXPLATE EXT BALANCE '71-ON CHRYSLER 383-440 WITH A-727 TRANS BM10237B&M's new Radial Tension Technology puts a new spin on flexplate technology. As engine performance levels increase, stronger flexplates become necessary. Until this point, stronger flexplates meant thicker flexplates. This works, but it adds unwanted weight and prohibited the flexplates from working as it was designed. Flexplates are designed to provide a protection against converter/transmission run-out or OEM misalignment, which will cause transmission and/or converter failure. A rigid flexplate gives no protection. The ultimate design for a flexplate is extreme strength, flexibility and minimal weight. B&M's new RTT performance flexplate accomplishes this goal. B&M's design allows for the removal of unnecessary material from non-critical stress areas. Less material means less weight - giving you the benefits of a lightweight, flexible design with thicker material for maximum strength!

• Chrysler '71 & later externally balanced 383-400-440 with cast crank and A-727 (These special Chrysler Flexplates must be used when changing converters on an externally balanced engine.)
• Has dual bolt pattern (10" & 11-1/8").
• SFI 29.1 approved, NHRA/IHRA legal for all classes.
• SFI certification sticker included (recertification required every 3 yrs.).
• Ideal for street applications to extreme duty racing and high (above 6,000) rpm use.

Specs:Application: Chrysler Mopar big block B/RB 383-440 C.I.D with Torqueflite 727 Transmission.