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727 expert help needed #2365071 09/04/17 11:41 AM 09/04/17 11:41 AM
Joined: Jan 2003 Posts: 6,435 Abilene, Texas F fastmark OP master
fastmark OP master F Joined: Jan 2003 Posts: 6,435 Abilene, Texas	I have an 84 model 727 from a one ton with a 360. It is the short tail shaft. Is that a lock up model or not? I need to put something together for a 340 a body combo and he wants a 727. I have plenty of early BB cores to rob internals and a tail shaft. Also. How do you ID a lock up besides the numbers on the case? Last edited by fastmark; 09/04/17 11:44 AM.

Re: 727 expert help needed [Re: fastmark] #2365073 09/04/17 11:50 AM 09/04/17 11:50 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	I think the LU has a machined smooth tip on the end of the input shaft as opposed to it being splined all the way out to the end. live every 24 hour block of time like it's your last day on earth

Re: 727 expert help needed [Re: fastmark] #2365165 09/04/17 01:36 PM 09/04/17 01:36 PM
Joined: Jan 2003 Posts: 6,435 Abilene, Texas F fastmark OP master
fastmark OP master F Joined: Jan 2003 Posts: 6,435 Abilene, Texas	That won't help. It's still hooked up the the motor. I thought there might be a wire in the case to make it lock up. Auto trans are not my in my area.

Re: 727 expert help needed [Re: fastmark] #2365177 09/04/17 02:02 PM 09/04/17 02:02 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	it would. if there is another electrical plugin terminal there other than the across the board 3 pin reverse lights/NSS ground plug in terminal that they all have then yes it is a LU. live every 24 hour block of time like it's your last day on earth

Re: 727 expert help needed [Re: RapidRobert] #2365179 09/04/17 02:10 PM 09/04/17 02:10 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Originally Posted By RapidRobert it would. if there is another electrical plugin terminal there other than the across the board 3 pin reverse lights/NSS ground plug in terminal that they all have then yes it is a LU. Plenty of lockup 727 that do NOT have the electric unlock provision. Pull the pan and see if the lock up plumbing in there or run the part number, only guaranteed way to tell. Picture one Lock up plumbing (NOTE, NO ELECTRONICS) Picture two - no extra connector, note input shaft They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: 727 expert help needed [Re: RapidRobert] #2365180 09/04/17 02:11 PM 09/04/17 02:11 PM
Joined: Jan 2007 Posts: 1,444 NEW JERSEY D dynamite pro stock
dynamite pro stock D Joined: Jan 2007 Posts: 1,444 NEW JERSEY	The 84 converter will not have a drain plug if it is a lock up as the verter from a non lock up will..

Re: 727 expert help needed [Re: dynamite] #2365188 09/04/17 02:23 PM 09/04/17 02:23 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	I stand corrected! live every 24 hour block of time like it's your last day on earth

Re: 727 expert help needed [Re: RapidRobert] #2366366 09/06/17 01:15 PM 09/06/17 01:15 PM
Joined: Jan 2003 Posts: 6,435 Abilene, Texas F fastmark OP master
fastmark OP master F Joined: Jan 2003 Posts: 6,435 Abilene, Texas	Thanks guys. Lots of good info and pictures here. There are no extra wires on either case I have so they are not electronic. I can pull the converter off of the 81 truck easily. I guess running numbers from the 84 is the best way to tell on that one. The motor is locked up on that one. My plans are if it is a lock up are to take all the internals out of an 68 BB core and put them in the small block case. I was told that would work. Thanks again.

Re: 727 expert help needed [Re: dynamite] #2366521 09/06/17 06:03 PM 09/06/17 06:03 PM
Joined: Jan 2003 Posts: 26,000 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 26,000 Rio Linda, CA	Originally Posted By dynamite The 84 converter will not have a drain plug if it is a lock up as the verter from a non lock up will.. The converter drain plug disappeared on January 10, 1977 and was never used again....lockup or not. The INTERNET, the MISinformation superhighway

Re: 727 expert help needed [Re: fastmark] #2367114 09/07/17 06:50 PM 09/07/17 06:50 PM
Joined: Jun 2003 Posts: 21,508 It's a dry heat gtx6970 Too Many Posts
gtx6970 Too Many Posts Joined: Jun 2003 Posts: 21,508 It's a dry heat	If the end of the input shaft is hollow, Its lockup

Re: 727 expert help needed [Re: fastmark] #2367133 09/07/17 07:15 PM 09/07/17 07:15 PM
Joined: Jan 2003 Posts: 26,000 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 26,000 Rio Linda, CA	Originally Posted By fastmark That won't help. It's still hooked up the the motor. The INTERNET, the MISinformation superhighway

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