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Gen 3 Ram Cummins transmissions

Discussion in 'Ram Trucks' started by sqdqo, Jan 2, 2012.

  1. sqdqo

    sqdqo Member
    from mqt mi
    Messages: 53

    Were the transmissions supplied with the Gen 3 Rams & Cummins all the same? I am considering a Gen 3 vintage Ram with a Cummins for a plow truck and have heard from more than one Ram/Cummins owner that they have had trans problems which required either re-build or replacement. Could someone offer an experienced opinion(s) of their own? I don't want to make a decision that I will be sorry for.
  2. leepotter

    leepotter Senior Member
    Messages: 122

    I believe there were 2 different Trans. The Automatic that came in the 305 HP HO motor, and then the one that came in the 245 HP motor.
  3. WILLD420

    WILLD420 Junior Member
    Messages: 19

    Anything is possible, but it should be a 48RE if it's not the new 6 speed version.

    They are adequate if you drive them nice. Second gear is usually the one that goes out, then it's all down hill from there.

    There are tons of tricks to keep them alive longer, the best one is to lift off the throttle when it changes gears a little and take some stress off the transmission. The second best trick is to keep the programmers away from them. You add 100 hp and 300 lb/ft of torque to the engine and it's going to smoke the trans in a hurry.

    The factory toque converters are junk. The rev the engine to the moon and make a lot of heat.
  4. JDiepstra

    JDiepstra PlowSite.com Addict
    Messages: 1,780

    The early 03 trucks had the 47whatever letters and the 03.5 and up had the 48RE. Id make sure it has the 48RE
    For a few hundred bucks you can modify the valve body to increase the line pressures and it will help a lot
  5. WILLD420

    WILLD420 Junior Member
    Messages: 19

  6. dm5.9

    dm5.9 Member
    Messages: 59

    If you put a torque converter and a valve body in either the 47 or the 48re they will hold up pretty good. Just make sure you do it before the current one starts slipping
  7. oldbluehairhemi

    oldbluehairhemi Senior Member
    Messages: 254

    the 03 to 04.5 had 47re's in them. they are junk in stock form. the 04.5 to 07.5 had the 48re's which were a lot better but if you are looking for big power you just need to bite the bullet and do the trans first.
  8. GMC99

    GMC99 Senior Member
    from 60188
    Messages: 753

    I had a 2003 Cummins non HO, the truck was worked to death, pulling huge loads, and plowing its entire life.. Installed a 100 hp banks programmer, and a few other mods at 30,000 miles.. Sold the truck with almost 200,000 miles and the trans was never touched... Maintenance is the key, changed my trans fluid twice a year (in fall, and after plowing season) adjusted the bands as well
  9. edgeair

    edgeair Senior Member
    Messages: 597

    +1 to that. 04.5 here, no problems, sitting at 115K miles, maintained regularly also.
  10. sleeper1g

    sleeper1g Junior Member
    Messages: 12

    thats the only problem when you attach a cummins to a dodge transmission, it tears em up, my 06, 48re went out with 65,000 on it, put a Goerend brothers trans with all the goodies