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904 to a 727 Transmission swap #1107677 11/05/11 07:39 PM 11/05/11 07:39 PM
Joined: Apr 2005 Posts: 29 Wichita Falls Tx my73beepbeep OP member
my73beepbeep OP member Joined: Apr 2005 Posts: 29 Wichita Falls Tx	Wanting to swap out a 904 trans on a 1973 Satellite to a 727.Other than the driveshaft being different is there anything else i will need to change.

Re: 903 to a 727 Transmission swap [Re: my73beepbeep] #1107678 11/05/11 08:40 PM 11/05/11 08:40 PM
Joined: Jan 2011 Posts: 15,839 Central Florida larrymopar360 Stud Muffin
larrymopar360 Stud Muffin Joined: Jan 2011 Posts: 15,839 Central Florida	Shorter shift linkage bracket needed for 727, along with the shorter driveshaft. Different dust cover too. Need donor bracket from 727 vehicle. The mount is the same. Facts are stubborn things.

Re: 903 to a 727 Transmission swap [Re: larrymopar360] #1107679 11/05/11 11:06 PM 11/05/11 11:06 PM
Joined: Jan 2003 Posts: 9,826 las vegas 70AARcuda master
70AARcuda master Joined: Jan 2003 Posts: 9,826 las vegas	converter...and check flexplate too.. flexplate might have different bolt circle for larger 727 converter... Tony 70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)

Re: 903 to a 727 Transmission swap [Re: 70AARcuda] #1107680 11/05/11 11:19 PM 11/05/11 11:19 PM
Joined: Sep 2006 Posts: 4,628 Columbus, Ohio wheelsup68dart master
wheelsup68dart master Joined: Sep 2006 Posts: 4,628 Columbus, Ohio	flexplate is the same, if you are switching from 904 behind a 360 then the converter will be weighted for external balance and you will need to get appropriate weighted converter for 727. Driveshaft is approx 7" shorter on 727. Dipstick is different. Linkages are probably different unless using aftermarket shifter.

Re: 903 to a 727 Transmission swap [Re: wheelsup68dart] #1107681 11/05/11 11:48 PM 11/05/11 11:48 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	727 converter is different transmission input sizing. You will need a weighted converter for if going to a 360 (compensating B&M flex plate) or a non weighted converter if going to a 318.You will need a different front yoke for the drive shaft and the drive shaft is approximately 4 inches shorter for the 727 rather than 7 inches as stated above. Been down this road many times.

Re: 903 to a 727 Transmission swap [Re: MoparforLife] #1107682 11/06/11 05:54 AM 11/06/11 05:54 AM
Joined: Jan 2003 Posts: 4,142 Canada -- Posts: 4034 -Registe... 5 5thAve Doesn't care what this says anyway
5thAve Doesn't care what this says anyway 5 Joined: Jan 2003 Posts: 4,142 Canada -- Posts: 4034 -Registe...	There's a difference in the kickdown linkage but sometimes 904 one can be made to work. Dipstick is the same, dipstick tube is different.

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