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904/727 Trans with metal fluid line (not cooler lines) #3214681 02/19/24 04:47 PM 02/19/24 04:47 PM
Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington V VITC_GTX OP master
VITC_GTX OP master V Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington	So, I have an AMC 904 and it has a small metal fluid line coming out of the rear of the casing heading up towards the engine compartment. I plan on picking up an AMC 727 tomorrow from a guy two towns over and the pictures show it has the same metal line. These lines are not the typical cooling lines so what the heck is it??? I'm hoping I can block it off and ignore it. I posted this question on the AMC forum and gotten a few ideas but nothing solid so let's see if the Mopart forum is smarted than the AMC forum https://theamcforum.com/forum/904-transmission-question_topic122793_page1.html

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: VITC_GTX] #3214746 02/19/24 08:36 PM 02/19/24 08:36 PM
Joined: Aug 2003 Posts: 43,157 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,157 Bend,OR USA	Vent? Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: Cab_Burge] #3214752 02/19/24 08:56 PM 02/19/24 08:56 PM
Joined: Mar 2011 Posts: 3,073 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,073 Michigan	Looks like cooler lines - just routed to the passenger side. Post a pic from the driver side. I never saw a AMC installation before but thats my guess.

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: Cab_Burge] #3214762 02/19/24 09:33 PM 02/19/24 09:33 PM
Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington V VITC_GTX OP master
VITC_GTX OP master V Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington	Originally Posted by Cab_Burge Vent? I wouldn't think a vent would come from the bottom of the trans (below fluid level). Last edited by VITC_GTX; 02/19/24 09:33 PM.

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: A727Tflite] #3214763 02/19/24 09:34 PM 02/19/24 09:34 PM
Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington V VITC_GTX OP master
VITC_GTX OP master V Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington	Originally Posted by A727Tflite Looks like cooler lines - just routed to the passenger side. Post a pic from the driver side. I never saw a AMC installation before but thats my guess. Not one of the two cooler lines. They are present on the left side of both transmissions.

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: VITC_GTX] #3214773 02/19/24 10:15 PM 02/19/24 10:15 PM
Joined: Jan 2003 Posts: 6,350 Aurora, Oh. M max_maniac master
max_maniac master M Joined: Jan 2003 Posts: 6,350 Aurora, Oh.	Maybe to a pressure or temperature gauge????

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: VITC_GTX] #3214777 02/19/24 10:24 PM 02/19/24 10:24 PM
Joined: Mar 2011 Posts: 3,073 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,073 Michigan	Originally Posted by VITC_GTX Originally Posted by A727Tflite Looks like cooler lines - just routed to the passenger side. Post a pic from the driver side. I never saw a AMC installation before but thats my guess. Not one of the two cooler lines. They are present on the left side of both transmissions. Maybe a closeup to the line fitting under the extension. Only thing in the extension is the governor port - not sure why there would be a line to it.

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: A727Tflite] #3214789 02/19/24 11:23 PM 02/19/24 11:23 PM
Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington V VITC_GTX OP master
VITC_GTX OP master V Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington	Originally Posted by A727Tflite Originally Posted by VITC_GTX Originally Posted by A727Tflite Looks like cooler lines - just routed to the passenger side. Post a pic from the driver side. I never saw a AMC installation before but thats my guess. Not one of the two cooler lines. They are present on the left side of both transmissions. Maybe a closeup to the line fitting under the extension. Only thing in the extension is the governor port - not sure why there would be a line to it. Ask and ye shall receive...

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: VITC_GTX] #3214799 02/20/24 12:49 AM 02/20/24 12:49 AM
Joined: Mar 2011 Posts: 3,073 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,073 Michigan	I saw that pic earlier - was hoping for one a little closer and a better angle. But, it looks like something attached to the governor pressure tap. Never seen anything like it before. Last edited by A727Tflite; 02/20/24 12:52 AM.

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: A727Tflite] #3214845 02/20/24 10:06 AM 02/20/24 10:06 AM
Joined: Aug 2009 Posts: 1,317 Ohio J jlatessa pro stock
jlatessa pro stock J Joined: Aug 2009 Posts: 1,317 Ohio	Unless it's been damaged, the formed bend on the line does not look like any factory radius?? Joe

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: A727Tflite] #3215000 02/20/24 07:38 PM 02/20/24 07:38 PM
Joined: Feb 2005 Posts: 528 SW CO HemiSportFury mopar
HemiSportFury mopar Joined: Feb 2005 Posts: 528 SW CO	Originally Posted by A727Tflite But, it looks like something attached to the governor pressure tap. Never seen anything like it before. Definitely looks like governor pressure line but what could they be using that for? Somehow tied in to cruise control or the speed governor on a truck? '64 Sport Fury, 528 Hemi, FiTech EFI, 4-speed, 4.10 Dana 60 '57 Belvedere 2dr sedan, current project in process '19 Cherokee Trail Hawk Elite '03 Ram 2500 CTD HO, 6-speed 214,000 miles and still going strong

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: HemiSportFury] #3215026 02/20/24 10:10 PM 02/20/24 10:10 PM
Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington V VITC_GTX OP master
VITC_GTX OP master V Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington	Originally Posted by HemiSportFury Originally Posted by A727Tflite But, it looks like something attached to the governor pressure tap. Never seen anything like it before. Definitely looks like governor pressure line but what could they be using that for? Somehow tied in to cruise control or the speed governor on a truck? The best guess over at the AMC forum is that it's part of the TCS (transmission Controlled Spark). That line goes up to a switch/solenoid that electrically controls something to do with spark advance I believe. I'm just trying to understand if I can remove the line and plug for my use. Kunkel, where are you at?

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: VITC_GTX] #3215037 02/20/24 11:18 PM 02/20/24 11:18 PM
Joined: Jan 2003 Posts: 15,343 Omaha Ne T TJP I Live Here
TJP I Live Here T Joined: Jan 2003 Posts: 15,343 Omaha Ne	I'll agree with the otherss and you on possible uses. PLUG IT www.tandmautomotive-omaha.com

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: VITC_GTX] #3215038 02/20/24 11:18 PM 02/20/24 11:18 PM
Joined: Mar 2011 Posts: 3,073 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,073 Michigan	If it’s attached to the governor port just plug it.

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: VITC_GTX] #3215048 02/21/24 12:38 AM 02/21/24 12:38 AM
Joined: Jan 2003 Posts: 1,043 Slidell, La. D doctor_mopar super stock
doctor_mopar super stock D Joined: Jan 2003 Posts: 1,043 Slidell, La.	I spoke with my Mopar Transmission builder . He had knowledge of this line . He said it ran up to something that had to do with retarding timing momentarily coordinating the shift with governor pressure for a smoother shift . He said it only came on a couple models like a Matador . He was a lot more detailed on his explanation , but I could only get a grasp of the basics , as it was a quick phone conversation . He said to put plug/cap at the transmission and Forget about it ! Last edited by doctor_mopar; 02/21/24 01:26 AM. ------------------------ It doesn't matter what you do.........As long as you look good doing it !

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: doctor_mopar] #3215058 02/21/24 03:35 AM 02/21/24 03:35 AM
Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington V VITC_GTX OP master
VITC_GTX OP master V Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington	Originally Posted by doctor_mopar I spoke with my Mopar Transmission builder . He had knowledge of this line . He said it ran up to something that had to do with retarding timing momentarily coordinating the shift with governor pressure for a smoother shift . He said it only came on a couple models like a Matador . He was a lot more detailed on his explanation , but I could only get a grasp of the basics , as it was a quick phone conversation . He said to put plug/cap at the transmission and Forget about it ! Thank you to you and your friend!!! I'm officially done worrying about it

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: VITC_GTX] #3215091 02/21/24 10:16 AM 02/21/24 10:16 AM
Joined: Apr 2021 Posts: 143 Canada E EW1BH27 member
EW1BH27 member E Joined: Apr 2021 Posts: 143 Canada	Perhaps share that information/discovery over on your AMC forum - if you haven't done so already.

Re: 904/727 Trans with metal fluid line (not cooler lines) [Re: EW1BH27] #3215119 02/21/24 12:15 PM 02/21/24 12:15 PM
Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington V VITC_GTX OP master
VITC_GTX OP master V Joined: Mar 2003 Posts: 4,929 Tri-Cities, Washington	Originally Posted by EW1BH27 Perhaps share that information/discovery over on your AMC forum - if you haven't done so already.

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