My thoughts on d300's

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  • malodin
    304 AMC
    • Sep 03, 2004
    • 1527

    My thoughts on d300's

    with last few d300's vs the world posts it got me to thinking why would jeep put the d300's and not into the 1/2-1 ton trucks

    1. AMC's bought everything from everyone else.
    2. by the time d300s came out amc/jeep was already fasing the fsj out(yes it lasted until 1990, and the d300 didnt)
    3. the d300 didnt last because they switched to drivers side drop and wanted a "more car like ride"
    4. by the time the d300 came out amc/jeep had switched the full size rig to a drivers side drop and the 300 is passenger side(that is imho the main reason they didnt put the 300 in the fsj

    NOT BECAUSE IT IS A LIGHT DUTY RIG BUT BECAUSE THEY HAD ALREADY "RE-DESIGNED" THE FSJ FOR DRIVERS DROP AXLE.(not yelling imphasizing)

    on this same note lots of people say it only came in a light duty non 3/4 1 ton rig but it did come in the 1980 scouts and they are HEAVY big beasts
    and i know of at least one person wheeling the piss out of it.
    Last edited by malodin; 10-15-2007, 06:46 PM.
    1977 CHEROKEE CHIEF, 401, SOA FRONT SITTING ON HD44 4.10'S, TH400/D300 COMBO, 14BFF REAR WITH TT'S FAB'S REAR SHAKLE FLIP KIT, RB'S BRONCO TANK MOD. 35'S
  • jeeping1974
    360 AMC
    • Jun 17, 2007
    • 3066

    #2
    i wish that the FSJs came with dana 300s in them. it would make the swap easier.
    03 GMC 2500HD - DD/toy hauler
    06 Street Glide - Cruiser

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    • Desert Beast
      360 AMC
      • Oct 05, 2002
      • 3237

      #3


      If it aint broke, fix it 'till it is.

      Comment

      • jeeping1974
        360 AMC
        • Jun 17, 2007
        • 3066

        #4
        mmmmmmmmm chocolate chip cookies mmmmmmmm
        03 GMC 2500HD - DD/toy hauler
        06 Street Glide - Cruiser

        Comment

        • -Bluegill-
          258 I6
          • Oct 09, 2007
          • 494

          #5
          Scouts weren't the only Binders that had D300's......my old Travelall did too, and that tank was the same size as a Suburban.
          -Rob
          www.TNFSJ.org
          www.4x4Grace.com

          1979 Cherokee W/T "Blue"
          2001 TJ Sport "Rudy"

          Comment

          • blt2krl
            AMC 4 OH! 1
            • Apr 03, 2001
            • 3730

            #6
            This thread could have some good info come out of it. So I will sticky to the top. Dana 300's rule. I'm putting one in my next rig.
            Paul Hartman
            79 waggoneer
            AMC360/TH-400/203/205
            DANA 60/14 BOLT 5.13'S AND DETROITS
            39.5 IROKS C.B.I OFF ROAD TUBING GALORE
            www.cbioffroadfab.com
            WWW.PLANET4X4.NET

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            • FSJeeper
              King of Unfinished Projects
              • May 20, 2000
              • 5270

              #7
              Originally posted by blt2krl
              This thread could have some good info come out of it. So I will sticky to the top. Dana 300's rule. I'm putting one in my next rig.
              Me too! With such a big aftermarket for upgrade parts for the Dana 300, one might think it has flaws that need to be upgraded, but it is really because they are so popular and cool.

              And hey, everyone lets throw some 4 to 1 gears in the D300 to make it more reliable. Wheeeeeee!
              In Process: 91 Wagoneer, D61/71 axles with 3.07 gearing, NV4500, NP205. Cummins 6BT.

              Back burner project: Crew cab M715, Cummins/Allison/Rockwell Tcase/Dana 61/Dana 71.

              Comment

              • malodin
                304 AMC
                • Sep 03, 2004
                • 1527

                #8
                Originally posted by blt2krl
                This thread could have some good info come out of it. So I will sticky to the top. Dana 300's rule. I'm putting one in my next rig.
                your absolutely correct this could have some good info come out of it.
                Last edited by malodin; 10-16-2007, 09:51 AM.
                1977 CHEROKEE CHIEF, 401, SOA FRONT SITTING ON HD44 4.10'S, TH400/D300 COMBO, 14BFF REAR WITH TT'S FAB'S REAR SHAKLE FLIP KIT, RB'S BRONCO TANK MOD. 35'S

                Comment

                • jeeping1974
                  360 AMC
                  • Jun 17, 2007
                  • 3066

                  #9
                  for bolting one up to a TH400 you will need a TH400/208 adaptor housing and the output shaft out of the same TH400. get the 32 spline input gear and the clocking ring from JB Conversions. their input shafts fit perfectly onto my TH400. plus the clocking ring will help you to lay the dana 300 almost perfectly flat between the fram rails.

                  you can run a 2.5" exhaust on the passenger side but the inner side of the exhuast pipe should be flatened a little to give a little more space between the dana 300 and the pipe.

                  i have mine installed in a 74 j10 with dana 44s front and rear. the driveshafts will bolt right up. the rear shaft will work fine if your running a 4" lift. the front will work fine if you are stock height. a little difference in height, the drive shafts will probably still work but you could run into something breaking if the suspension is fully compressed (rear) or fully extended (front) take the time to do some measuring.

                  i'll be installing a set of j20 axles in my j10 in the next week or two so i'll post up about the driveshafts then. i have yet to run mine so i have no feed back on that, yet.
                  03 GMC 2500HD - DD/toy hauler
                  06 Street Glide - Cruiser

                  Comment

                  • AdamG
                    232 I6
                    • Sep 05, 2006
                    • 47

                    #10
                    I have been kicking myself in the butt over selling my drivetrain from my xj that was going into my CJ that got scrapped. I-6 4.0 HO, to AX-15, to Novak adapter, to Dana 300 clocked flat. Even just the tranny and TC would have been nice in Caspar.
                    Oh well live and learn, sometimes you have to sell the parts to buy the rig to put the parts in...
                    Adam G
                    1980 Cherokee
                    v-8 AT PW PL AC Tilt Cruise flux capacitor.
                    37X1350R15 baja Claw Radials
                    Soon to come:
                    Lift, Armor, tow points, Lockers, more comfortable seats, Bead locks, and a credit card payment.

                    Comment

                    • jeeping1974
                      360 AMC
                      • Jun 17, 2007
                      • 3066

                      #11
                      i'll be posting up a small thing about the dana 300 with a set of 79 j20 axles after it with driveshafts later on this week.
                      03 GMC 2500HD - DD/toy hauler
                      06 Street Glide - Cruiser

                      Comment

                      • JERSEY JOE
                        304 AMC
                        • Jan 15, 2004
                        • 1588

                        #12
                        D300

                        The D300 absolutely needs the 32 spline output shaft update in a heavy truck. Heck most of the serious CJ guys run them.
                        1977 CJ 7 360 T-18 IHC D300 FARM TRUCK NY
                        1985 CJ 7 AMC 401, CLARK 285SV 5 SPEED, DANA 60, DANA 44, RUBICON 4.5 LIFT. 37 KRAWLERS
                        1987 J-20 401 90% COMPLETED.
                        1985 J-20 360 6 inch lift, 37's plow truck
                        1986 J-20 360 stock well rusted plow truck
                        1970 AMX CURRENT PROJECT

                        Comment

                        • SCscoutguy
                          327 Rambler
                          • Jul 25, 2005
                          • 692

                          #13
                          Originally posted by -Bluegill-
                          Scouts weren't the only Binders that had D300's......my old Travelall did too, and that tank was the same size as a Suburban.
                          No they didnt. The last year for Travelalls and pickups was 1975 and the Dana 300 wasnt even invented yet. Travelalls and pickups came with NP-205's in the 70's.
                          John

                          Comment

                          • malodin
                            304 AMC
                            • Sep 03, 2004
                            • 1527

                            #14
                            Originally posted by SCscoutguy
                            No they didnt. The last year for Travelalls and pickups was 1975 and the Dana 300 wasnt even invented yet. Travelalls and pickups came with NP-205's in the 70's.
                            is it possible that maybe someone swapped in a 80's scout drive train into the travel all?
                            1977 CHEROKEE CHIEF, 401, SOA FRONT SITTING ON HD44 4.10'S, TH400/D300 COMBO, 14BFF REAR WITH TT'S FAB'S REAR SHAKLE FLIP KIT, RB'S BRONCO TANK MOD. 35'S

                            Comment

                            • -Bluegill-
                              258 I6
                              • Oct 09, 2007
                              • 494

                              #15
                              They may have, the 345 didn't quite look as old as the truck
                              -Rob
                              www.TNFSJ.org
                              www.4x4Grace.com

                              1979 Cherokee W/T "Blue"
                              2001 TJ Sport "Rudy"

                              Comment

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