View Full Version : 392 Flywheel on a 331 Hemi
laverda
10-21-2003, 05:55 PM
Does anyone out there know if a 392 flywheel will work on a 331 hemi (extended bell)? I currently have a PowerFlite setup & would really like a third pedal in the cdan's future. Thanks.
eBay link to hemi flywheel (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&category=46098&item=24 38011722)
cadlights
10-21-2003, 06:10 PM
CHECK THE BOLT PATTERN ON THE CRANK, DOESN'T LOOK THE SAME TO ME.
cadlights
10-21-2003, 06:11 PM
Oops, sorry didn't mean to yell.
cadlights
10-21-2003, 10:27 PM
This is the bolt pattern on a 331 and I think 392 also.
check the offset on the two holes at the bottom of photo.
SKR8PN
10-21-2003, 11:33 PM
I think it is the same bolt pattern that MOPAR has used on EVERYTHING since the creation of DIRT.........
laverda
10-22-2003, 12:21 AM
I have been looking through Ceridono's book & the only passage I can find is ' ... stock hemi flywheels from '51-'58 mounted to the crankshaft with eight bolts & registered on the outside diameter of the crankshaft flange ... ' A 426 flywheel needs mods as it registers differently on the crank. Unfortunately I cannot get access to the crank any time soon ... distant storage & another tranny (Powerflite) is hooked on the end http://www.jalopyjournal.com/ubbthreads/images/graemlins/crazy.gif
Then again HotHeads lists the following flywheels ..
Chrysler Flywheel - Aluminum - 13# '51 - '56
Chrysler Flywheel - Aluminum _ 13# '57 - '59
Thanks again for the responses.
Later,
papa al
laverda
10-22-2003, 12:25 AM
While looking for crank info I came across this gem for inspiration ... 331 a runnin' (http://www.classichemi.com/fred3.wav)
later,
papa al
cadlights
10-22-2003, 12:43 AM
This be a 331 bored out 20 thousands. Its a 55 and that crank adapter was made for it. That is what your crank looks like.
Rocky
10-22-2003, 08:11 AM
if you still can't get a look at your 331 crank and still need to know the bolt pattern, I can take a rubbing off the back of mine, [53 with extended block] scan it and e-mail it to ya..Let me know via e-mail.
Gotta love electronic technology.
Rocky
10-22-2003, 08:21 AM
BTW, every hemi book I have says chrysler/dodge never put a manual tranny behind a 392 Hemi. May I assume you're working with an automatic?
I'm using a poly-head dodge truck stick flywheel [thanks again, Silent Rick] behind my 331. Seems to work ok but I don't have everything assembled yet.
laverda
10-22-2003, 11:28 AM
Interesting point ... the closest manual trans might be the Fluidmatic auto/manual trans that everyone dislikes.
Further fuel ...
eBay listings for flywheels (caveat emptor)
331
http://photo.starblvd.net/~laverda_jota/2-2-3.jpg
392
http://photo.starblvd.net/~laverda_jota/2-2-4.jpg
... and they do look different (bolt pattern).
Nice hemi 'cadlights' http://www.jalopyjournal.com/ubbthreads/images/graemlins/smile.gif
later,
papa al
My experiece is that every thing interchanges. I have used the 6 hole and the 8 hole flywheels. I think the 6 hole ones came from the FH 6's. I have used them on the Dodges and the Chryslers. I prefer the 6 hole ones due to their lighter weight. Some of the 6 hole ones came with odd ring geares but the ring gears from the Powerflight auto's can be removed and substituted onto the flywheel. http://www.jalopyjournal.com/ubbthreads/images/graemlins/smile.gif
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