There are several OEM 6 bolt A motor internally balanced motors, 273,318,340, 130 tooth nuetral balance flywheels that will work on either the BB, 426 Hemi and B and RB internally balanced motors, same on the internally balanced motors with the larger 143 tooth flywheels up The key is internally balanced motors using a nuetral balanced flywheel, aluminum, stee, 130 or 143 tooth thumbs IHTHs

Last edited by Cab_Burge; 08/24/15 03:49 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)