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Hot Rods 392 Hemi to 3 speed info needed

Discussion in 'The Hokey Ass Message Board' started by Mark It Zero, Aug 30, 2025 at 8:26 AM.

  1. Mark It Zero
    Joined: Dec 20, 2010
    Posts: 9

    Mark It Zero
    Member

    Hi All,
    I'm looking for some much needed help, having spent hours trawling the internet for information I've pretty much drawn a blank!

    I have an Offy 0400 and 0401 2 piece adapters to fit an early Ford 3 speed to a 392Hemi.

    I'm really struggling to find first hand information on which flywheel, starter and pressure plate was used.

    Anyone out there actually done this recently? or in the distant past who have a fantastic memory.

    Thanks.
    upload_2025-8-30_14-26-18.jpeg
     
    leon bee likes this.
  2. tubman
    Joined: May 16, 2007
    Posts: 8,005

    tubman
    ALLIANCE MEMBER

    I have the same adapter in my dirt modified (Avatar) against a CAE in-out box (same pattern as early Ford). I put a clutch in it for tuning purposes and so I could have the ability to move around the pits. This was in the mid-nineties, but I believe the clutch was out of a '56 Dodge truck. I used an aftermarket aluminum flywheel (eBay purchase - I don't remember the brand) and a stock starter. The engine was originally out of a 54 New Yorker.
     
    Last edited: Aug 30, 2025 at 10:49 AM
    rod1, leon bee and jet996 like this.
  3. Well, done this yes. Recent, no. It's been 40 plus years, and my good memory is long gone. However, I still have some parts, see photo.
    20250830_105759.jpg I hope this helps some. I know this P.P. and disc were in the package and sorta worked. I can't tell you year and make but know these 2 items are Chrysler. I believe Truck. That is a 12 inch Clutch and disc. I know they were bolted to a Stock 8 bolt Chrysler flywheel. I also remember the Starter motor was from the same vehicle. I know the T.O. bearing was stock early Ford. That's where things get Gray. I had a release issue in the beginning and ended up switching to a Ford Big Truck disc. At the same time, I sorta remember then needing a Ford Big Truck front bearing retainer for some added length so the T.O. bearing would travel a little further for full release. This was all in a 46 Ford 1/2 ton truck and when I sold it after 2 years of driving fun everything was still working fine.
    Being most of the time I can't remember what I had for dinner last night pulling this much up from the past was fun. Taking that photo today is shocking and remembering that old Truck was priceless.
    Just an Old Guy still doing Time and trying to help when I can.
     
    Budget36, patsurf, rod1 and 2 others like this.
  4. Mark It Zero
    Joined: Dec 20, 2010
    Posts: 9

    Mark It Zero
    Member

    Tubman, Pist-n-broke
    Thank you for taking the time to post, any information is helpful in piecing together what I need
     
  5. Tdesoto276
    Joined: Mar 22, 2006
    Posts: 219

    Tdesoto276
    Member
    from Des Moines

    I’m pretty confident the Offy and Cragar adapters were identical and used the same 400 series part numbers. They were engineered to use the Mopar stock flywheel and starter (the early Hemi adapter moved the starter to the passenger side). The Cragar unit I purchased used drilled the stock flywheel to accept the Ford clutch and pressure plate to match up to the early Ford transmission and clutch lever. Hope this helps.
     
    Pist-n-Broke likes this.
  6. Tdesoto276
    Joined: Mar 22, 2006
    Posts: 219

    Tdesoto276
    Member
    from Des Moines

    I should add that you can use any aftermarket or stock replacement flywheel, but you need to match your starter and ring gear. The early Hemis that used a 6v starter had 146 tooth ring gear. When they switched to 12v the ring gear had 172 teeth.
     
    Pist-n-Broke likes this.
  7. I will add to this that my adapter also moved the 6-V Chrysler starter to the Passenger side. I also know I used a stock Ford TOB against the Chrysler PP. I verified that prior to first post. The bearing OD fits the 4 finger Chrysler as it does on the Ford 3 finger PP's. After initial post and thinking more about that project I believe the reason for going the Ford disc was the splined hub in the Chrysler disc protruded towards the Trans too far and stopped the Ford bearing from traveling inboard enough for total release. I don't remember what brought on the bearing retainer change and I may in fact be confused a bit between different projects. I did several Mix-n-Match between Ford, G.M. and Chrysler before Will-Cap and my wallet started mixing things together. I have a fair amount of loose parts on the shelf I could set things up and do a little measuring for you if that would help out.
     
    Tdesoto276 likes this.
  8. mickeyc
    Joined: Jul 8, 2008
    Posts: 1,436

    mickeyc
    ALLIANCE MEMBER

    I obtained a very nice as well as very complete set up for 392 Chrysler from
    The Wilcap Company. Oceano California. I was in the area at the time. The folks there
    manufacture much of their product line in house. They build flywheels and do combine features as needed.
    Wilcap supplied a fixture to guide in drilling and tapping a Hemi crank shaft to receive flywheel bolts, which
    eliminates the need for nuts on bolts as original hemis utilized. Check them out.
     
    Pist-n-Broke likes this.

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