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Technical Early Hemi Information Thread

Discussion in 'The Hokey Ass Message Board' started by ekimneirbo, Mar 15, 2020.

  1. ekimneirbo
    Joined: Apr 29, 2017
    Posts: 2,098

    ekimneirbo
    Member
    from Brooks Ky

    While I always liked the looks of a Big Ole Hemi in a hotrod, I never learned anything about them. So for others whose Hemi education may be lacking and they want to buy a Hemi for a project, hopefully this information will help them.
    Hemi Info Chart 001.jpg
    Hemi Info 1 001.jpg
    Hemi Info 2 001.jpg

    Hemi Info 3 001.jpg
    Hemi Info 4 001.jpg
    Hemi Info 5 001.jpg
    Hemi Info 6 001.jpg
    Hemi Info 7 001.jpg
    Hemi Info 8 001.jpg Hemi Info 9 001.jpg Hemi Info 10 001.jpg Hemi Info 11 001.jpg Hemi Info 12 001.jpg
    So if you found this information helpful to you, get a subscription to Hot Rod Magazine or their online website. The old magazines are a treasure trove on hard to find technical information. Get some of your old magazines out and park them next to your toilet.....like in the old days.:D:D:D
     
    j hansen, Hnstray, Deuces and 7 others like this.
  2. Kan Kustom
    Joined: Jul 20, 2009
    Posts: 2,680

    Kan Kustom
    Member

    Nice contribution. Thanks for sharing this information.
     
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  3. DOCTOR SATAN
    Joined: Mar 21, 2014
    Posts: 711

    DOCTOR SATAN
    Member
    from okc

    Yeah, been a long time since I read early Hemi white pages.....
     
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  4. Lil'Alb
    Joined: Sep 22, 2013
    Posts: 238

    Lil'Alb
    Member
    from brier, wa

    Thanks ma brotha
     
    Deuces and loudbang like this.

  5. yep...thanks....will add to my collection......
     
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  6. loudbang
    Joined: Jul 23, 2013
    Posts: 38,655

    loudbang
    Member

  7. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 344

    402BOSSMAN
    Member

  8. 392
    Joined: Feb 27, 2007
    Posts: 1,206

    392
    Member

    Good stuff. There were some good mills back in the day, but once you have a hemi you wont regret it and wont go back.
     
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  9. loudbang
    Joined: Jul 23, 2013
    Posts: 38,655

    loudbang
    Member

  10. George
    Joined: Jan 1, 2005
    Posts: 7,460

    George
    Member

    Probably should have added to the Hemi tech Index......
     
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  11. continentaljohn
    Joined: Jul 24, 2002
    Posts: 5,014

    continentaljohn
    Member

    Thank you love the hemis and never have enough info
     
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  12. KoolKat-57
    Joined: Feb 22, 2010
    Posts: 3,035

    KoolKat-57
    Member
    from Dublin, OH

    Great information, thanks for posting!
    KK
     
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  13. Deuces
    Joined: Nov 3, 2009
    Posts: 21,280

    Deuces
    Member
    from Michigan

    This one needs a bump.....'....
     
  14. GMC BUBBA
    Joined: Jun 15, 2006
    Posts: 3,385

    GMC BUBBA
    Member

    GUYS I HAVE A EARLY CAST IRON LAYING ON MY DESK AND CANT FIND THE CORRECT SHAFT LENGTH ......FROM MOUNTING TO END OF PUMP DRIVE FOR A 331 HEMI ?? ANY ONE GOT THAT OFF THE TOP OF THEIR HEAD , I GOT IT HERE SOMEWHERE ...ITS A PAR NUMBER IBB4103B DUAL POINT ??
     
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  15. sliceddeuce
    Joined: Aug 15, 2017
    Posts: 2,982

    sliceddeuce
    Member

  16. George
    Joined: Jan 1, 2005
    Posts: 7,460

    George
    Member

    Um, what? Int. shaft? if so the 331/354 is 5.25" with OEM dizzy & O/P.
     
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  17. GMC BUBBA
    Joined: Jun 15, 2006
    Posts: 3,385

    GMC BUBBA
    Member

    From top of dist hold down to bottom of shaft in oil pump. 4to5inches ???
     
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  18. 270dodge
    Joined: Feb 11, 2012
    Posts: 742

    270dodge
    Member
    from Ohio

    MOPAR Distributor shaft lengths
    Chrysler 331/354 Hemi – 4.25″
    Chrysler 392 Hemi – 4.5″
    Dodge 241/260/270 Hemi – 3.875”
    Dodge 315/325 Hemi – 4.25″
    Desoto 276/291 Hemi – 4.00″
     
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  19. George
    Joined: Jan 1, 2005
    Posts: 7,460

    George
    Member

    From the top of the dizzy hole to O/P shaft would be 9 3/4"
     
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  20. GMC BUBBA
    Joined: Jun 15, 2006
    Posts: 3,385

    GMC BUBBA
    Member

    thats it , exactly what i needed ......... thank you thank you !!!!!!
     
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  21. GMC BUBBA
    Joined: Jun 15, 2006
    Posts: 3,385

    GMC BUBBA
    Member

    HERES THE WAY I SEE USING THE SPECS THE UNIT MY CUSTOMER SENT ME FOR REBUILD IS FOR A DODGE 241/260/270 AT 3.875 SHAFT LENGTH ( HE NEEDS A 4.25 SHAFT ......) NICE UNIT , CAST IRON WITH NO VAC FROM FACTORY DUAL POINT ...... HE HAS A 331 CHRYSLER ENGINE
    IMG_3540.JPG
     
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  22. George
    Joined: Jan 1, 2005
    Posts: 7,460

    George
    Member

    IBB4103B is for the 55-56 259 Poly. where it doesn't have vacuum advance there's probably better choices. Shaft could be replaced with a 331 one, I believe, or cut and extended with a collar. It's a 259, 260 is a Ford...
     
    Last edited: Apr 2, 2020
    loudbang likes this.
  23. Late model Chrysler electronic distributors adapt easily to early hemis. For 331/354 engines weld about 1/4" bar to the tip of the shaft which is what I did. 392s need a longer adaptor available from Hot Heads and others. Rest is just bolt on.
    Hemi2.jpg
     
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  24. GMC BUBBA
    Joined: Jun 15, 2006
    Posts: 3,385

    GMC BUBBA
    Member

    Ok after talking to the engine builder dude we agree it would make a really nice distributor , rebuilt with new cap , rotor and contacts . Fit the engine ( firewall clearance is small with a Model T ) well with a good coil set up (proper resistance etc ) ... Note this project car has been all over (maybe a wife or two etc) for the last 10 years or so . Its back at my friends fab shop to start engine and finish the project ( for a different owner ) . So just for the hell of it heres "some hemi tech" These old cast distributors are a great unit and very seldong need bushings etc like the later mopars did . So i pick one out of the box with no vacuum advance from the factory ! Hard to tune vac on a dual quad cammed up hemi engine . Like the idea of points as theres little to do but wire it up and run it .. No need for the MSD star trek tuning box and low resistance coil (its a old hemi for gods sake , it wont turn 8,000 and make a million horsepower , so fake it and run a MSD decal or two no one will know).
    Lets start with a trip to the blaster and glass bead what we can, then take out the upper dual point plate , just happen to have a carton of the old prestolite contact points. Remove the hir clip ( hardest part of job so far , dont lose it and be carefull using the correct pliers . Then remove cam , weights etc , note there are two springs and the posts are adjustable by bending . ( more later ) . Now all this stuff needs glass beaded, polished on a wheel etc . maybe some black paint etc . More as time permits . Questions anyone ??? IMG_3546.JPG IMG_3548.JPG IMG_3549.JPG IMG_3550.JPG IMG_3552.JPG
     
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  25. Lol,,,,no questions.
    I’m pretty sure you know your stuff already !

    Tommy
     
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  26. George
    Joined: Jan 1, 2005
    Posts: 7,460

    George
    Member

    This really should be posted to the proper section of the Board's "Hemi Tech Index".
     
  27. GMC BUBBA
    Joined: Jun 15, 2006
    Posts: 3,385

    GMC BUBBA
    Member

    Ok
     
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  28. manyolcars
    Joined: Mar 30, 2001
    Posts: 8,510

    manyolcars

    Great Idea!
     
  29. GMC BUBBA
    Joined: Jun 15, 2006
    Posts: 3,385

    GMC BUBBA
    Member

    How we do that
     
  30. manyolcars
    Joined: Mar 30, 2001
    Posts: 8,510

    manyolcars

    Post on the hemi thread
     

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