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Help ID this factory torque convertor #2698406 09/17/19 11:21 AM 09/17/19 11:21 AM
Joined: Jan 2003 Posts: 2,252 New York rarefish OP top fuel
rarefish OP top fuel Joined: Jan 2003 Posts: 2,252 New York	I don't have any of the late 70's part books as I pretty sure that it is from that era. Part No. 4057396

Re: Help ID this factory torque convertor [Re: rarefish] #2698449 09/17/19 01:28 PM 09/17/19 01:28 PM
Joined: Jan 2003 Posts: 25,726 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,726 Rio Linda, CA	Can't find that number but it's a neutral-balanced low-stall 10 3/4" (11") for a '77-later 727. The INTERNET, the MISinformation superhighway

Re: Help ID this factory torque convertor [Re: John_Kunkel] #2698470 09/17/19 02:19 PM 09/17/19 02:19 PM
Joined: Jan 2003 Posts: 2,252 New York rarefish OP top fuel
rarefish OP top fuel Joined: Jan 2003 Posts: 2,252 New York	Do you think it's a lock up converter? Last edited by rarefish; 09/17/19 02:20 PM.

Re: Help ID this factory torque convertor [Re: rarefish] #2698723 09/18/19 01:09 PM 09/18/19 01:09 PM
Joined: Jan 2003 Posts: 25,726 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,726 Rio Linda, CA	Shine a flashlight down the bore and count the splines. The INTERNET, the MISinformation superhighway

Re: Help ID this factory torque convertor [Re: John_Kunkel] #2698775 09/18/19 07:39 PM 09/18/19 07:39 PM
Joined: Mar 2011 Posts: 3,068 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,068 Michigan	My reference docs only go to -386. The -386 is a Reman 10-3/4” HP low stall, Look inside the impeller hub while holding the converter on its ring gear. Look inside and if you see a seal it is lockup. If no seal it’s non-lockup. Last edited by Transman; 09/18/19 08:03 PM.

Re: Help ID this factory torque convertor [Re: A727Tflite] #2698789 09/18/19 08:39 PM 09/18/19 08:39 PM
Joined: Apr 2006 Posts: 1,497 North East USA B BIGGERED Reasonable Title
BIGGERED Reasonable Title B Joined: Apr 2006 Posts: 1,497 North East USA	4057396 2520-01-003-9403 Torque Converter, Vehicular Special Features: Tm 9-2320-266-34P End Item Identification: M880 cargo truck JB it has an NSN! Kevin

Re: Help ID this factory torque convertor [Re: BIGGERED] #2698962 09/19/19 12:31 PM 09/19/19 12:31 PM
Joined: Apr 2006 Posts: 1,497 North East USA B BIGGERED Reasonable Title
BIGGERED Reasonable Title B Joined: Apr 2006 Posts: 1,497 North East USA	Flag on the play I may be incorrect so below may be inaccurate. Manual references your number in one section but in another references another. Below subject to review Appears that torque converter replaced 2843586 which may have been used in 69-71 440HP applications? M880 Parts LOOK AT PAGE 40-1 AT THE LINK https://www.forbbodiesonly.com/moparforum/threads/727-transmission-stock-stall-speed.97378/ Kevin Last edited by BIGGERED; 09/19/19 01:31 PM.

Re: Help ID this factory torque convertor [Re: BIGGERED] #2698970 09/19/19 12:58 PM 09/19/19 12:58 PM
Joined: Jan 2003 Posts: 25,726 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,726 Rio Linda, CA	If it's non-lockup, this converter will work with any neutral-balanced 727 (or some 518"s) installation from '67 until the end of production. The difference is this one has no drain plug so it's intended for '77-later. The INTERNET, the MISinformation superhighway

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