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IRON CASE 4 speed ID HELP

Discussion in 'U-shift em' started by wheelz, Jul 13, 2008.

  1. wheelz

    wheelz 'B' is for Buick.

    Hi Guys! I must've bought this trany perhaps a hundred years ago? :Dou: I normally 'tag" with a note or two so I know what it came from?? But NOT this time. :blast: I looked up Muncie recyslcer site and I didnt find much info on old 'iron case tranny units" :Do No: So...PLEASE..PLEASE, help ID this tranny for me...TIA! :beers2: Wheelz, Tampa Bay
     
    Last edited: Jan 9, 2009
  2. flynbuick

    flynbuick Guest

    1972 Saginaw


    3925656 is the main case number for 70-72 Sag 4 speeds while the pad VIN number 2A XXXXXXXX under the GM convention for partial VINs indicates 2 for 1972 models.

    Maybe a smaller horsepower engine application in a Nova or someting like that is a guess.
     
  3. wheelz

    wheelz 'B' is for Buick.

    Jim.....DOES YOUR brain ever rest? I mean,..goodgolly dood, you must get awful headaches from all that knowledge you got crammed in twixt your ears...:TU: :Brow: :laugh: ...all kidding aside, THANQ for the info! Wheelz, Tampa Bay
     
  4. poison heart

    poison heart Well-Known Member

    How about this one?

    Saginaw

    GM1

    8826866


    and this looks to be a VIN

    18K185259

    and what appears to be a date code. This one is really hard to read

    B208
    or 8298
    or a combo of those 2

    the 8 is the year. '58? '68? maybe even '78?
     
  5. carbineone

    carbineone Well-Known Member

    Definitley Saginaw,I am not aware of any Iron case Muncie 4 speed car transmissions,trucks used the iron Muncies,totally differant trans though in the pickups and trucks, but all 4 speed ones made for cars were Aluminum case that I have ever seen...I know this doesnt help but I am bored.......
     
  6. 66gsconv

    66gsconv nailhead apprentice

    Is the iron case stronger??
     
  7. Gold65GS

    Gold65GS Well-Known Member

    Much heavier. :laugh:
     
  8. carbineone

    carbineone Well-Known Member

    I think the General thinking is the Saginaw is not as strong as the Muncie..I do not think the Saginaw was ever put behind a Big Block GM car at all...I have used the Saginaws myself behind engines under 300 HP and never had a probelem with them..I have heard guys claim they have run them behind Big Blocks with no problems but I have to wonder how hard they run them behind the Big Blocks though.....
     
  9. poison heart

    poison heart Well-Known Member

    The saginaw 4 speed I posted above is what I plan to run behind my 430. If it works it work, if it doesn't then I'll buy a Muncie. But this is a ways away.
     
  10. poison heart

    poison heart Well-Known Member

    Also, I'm pretty sure all Muncies were Aluminum. My 1970 Muncie weighs about 80 lbs and my stock 1959 Hydramatic weighs about a ton.
     

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