TRANS AND CONVERTER SHOULD HAVE NO BEARING ON STARTING,THERE WERE 2 FLYWHEELS THAT COULD HAVE BEN USED .YOURS SHOULD BE THE LARGER ONE ,CANTELL BY THE WAY STARTER BOLTS TO THE BLOCK BOLTS ARE NOT STRAIGHT ACROSS .THE INSIDE ONE SHOULD BE TOWARDS THE FRONT OF ENGINE.HAVE SEEN ALOT OF UNDERSIZED CABLES ,ALSO GROUNDS FROM FRAME TO ENGINE AND ENGINE TO BODY BAD OR MISSING. AREAL PROBLEM IS PEOPLE BUY LOW PRICED BATTERYS THAT ARE LOW AMPAGE THE BATTERY FOR A 350 /400 CID ENGINE SHOULD BE AT LEAST 650 CC AMPS WITH A 850 CC AMPS PREFERRED .TIMING ADVANCED TO FAR AND CARBON BUILDUP ON PISTONS ARE OTHER POSIBILITYS.A CHECK ON AMPS DRAWN BY STARTER CAN BE DONE BY A MECHANIC WITH RITE TOOLS.