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Technical 318 poly manual trans

Discussion in 'The Hokey Ass Message Board' started by magoo, Nov 29, 2024.

  1. magoo
    Joined: Jun 6, 2002
    Posts: 214

    magoo
    Member

    I have a 1960 dodge wagon with a 318 poly. At some time it has been fitted with a 4 speed box from a dodge truck . Is there another manual box that is an easy swap
     
  2. earlymopar
    Joined: Feb 26, 2007
    Posts: 1,677

    earlymopar
    Member

    I'm not sure what bell housing you have but any of the 3 & 4 speeds from that era and beyond that were used behind an LA series small block will work with the appropriate bell housing. You'll also be faced with a change to your driveshaft (length and yoke).
     
  3. gene-koning
    Joined: Oct 28, 2016
    Posts: 4,729

    gene-koning
    Member

    Its likely that the bell you have only has the truck transmission bolt pattern on it, if it has a 2nd pattern, you should be able to see a few of the bolt holes around your existing trans. The clutch disc hub will match the transmission input shaft, so that too will be different.

    The bell housing bolt pattern on the back of the poly motor is the same as any small block Mopar motor. The truck flywheel (and bell) may be a larger diameter then one from a car (depending on which truck the trans came out of) simply because it is a truck trans. The flywheel is a neutral balanced that will come from any small block Mopar except a 360/5.9, they have a different balance. I suggest you get the flywheel (and clutch) that matches the bell and the transmission you get.

    The truck trans should have the shifter coming out of the top of the trans, unless you go with one of the modern 5 speeds OD transmissions (which also have the shifter coming out of the top of the trans), you may have to alter the hole in your floor pan, and you may need to modify the trans tunnel to clear the shifter and its linkage that bolts onto the driver side of the transmission.
     
    vtx1800 likes this.
  4. lemondana
    Joined: Feb 21, 2009
    Posts: 279

    lemondana
    Member
    from Lincoln NE

    But I think your 1960 318 had the extended crankshaft, meaning you would have to swap in a newer crank to use the newer stick stuff.
     
    57Fury440 likes this.
  5. HEATHEN
    Joined: Nov 22, 2005
    Posts: 8,873

    HEATHEN
    Member
    from SIDNEY, NY

    Yes, I think that 318 poly engines changed in that respect after 1962.
     
    lemondana likes this.
  6. earlymopar
    Joined: Feb 26, 2007
    Posts: 1,677

    earlymopar
    Member

    You're correct. I did not pay attention to the year of the OPs engine....
     
  7. gene-koning
    Joined: Oct 28, 2016
    Posts: 4,729

    gene-koning
    Member

    Correct concerning the extended crank, things we forget about.

    But, at the same time, we have no idea what year anything on the car was built in. All we know it that the car is a 1960 Dodge wagon and that the motor is a 318 poly.

    As a case in point, I had a 66 Dodge 3/4 ton pickup with a 318 poly and the truck 4 speed, would have been a pretty easy swap into a 60 Dodge wagon.
     
  8. sunbeam
    Joined: Oct 22, 2010
    Posts: 6,336

    sunbeam
    Member

    I put a 1994 Dakota 5 speed behind a early dodge hemi Using a Torque flite adapter and changing the ring gear to a dakota ring gear on the stock flywheel. You will lose the E brake.
     
  9. George
    Joined: Jan 1, 2005
    Posts: 7,844

    George
    Member

    All Hemi, hemi based Polys & "A" Polys through '61 have the same bell & crankflange and the trannys interchange, or..get a 392 to '62 & up adaptor & put a modern sb 727 or stick tranny behind it.
     
    340HilbornDuster and Packrat like this.
  10. 73RR
    Joined: Jan 29, 2007
    Posts: 7,327

    73RR
    Member

    ^^^^^^what George said.
    If you want a 4-spd then it will be an A-833. Match the trans, bellhousing and flywheel. The 3+1 OD uses the 143 tooth flywheel and it does not fit in a 130T bell.
    If you want a 5-spd then it will be the AX15. This will use the 143 tooth flywheel.
    There is also the Getrag 6-speed....
    Details on my website.
     
    340HilbornDuster likes this.

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