Here's a quote I found from John_Kunkel on this site
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The Hemi uses a 172 tooth flywheel while the 383/440 uses the 143 tooth flywheel; different diameters.

Also the Hemi uses a didect drive starter while the 383/440 use the gear reduction starter; different mounting pad.
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It was from a discussion on the differences in bellhousings between Hemi's and B/RB motors. Apparently, the Hemi uses a unique 8-bolt 172 tooth flywheel, a unique bellhousing and unique starter.

Here's the link:
https://board.moparts.org/ubbthreads/ubbthreads.php/ubb/showflat/Number/4817811/site_id/1

Last edited by PurpleBeeper; 03/16/17 06:09 PM.
70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"