Mopar Muscle Car Owners- Transmission question

[Challenger-II]

I have a Dodge Challenger that I am in the process of restoring. It has a 727 automatic trans. Does anyone know which connection on the trans is for the line that goes to the radiator cooler and which is the return? Is the most forward (toward engine) connection the out and the rear connection the return?



Thanks!

 

[Hohn]

I am pretty sure that's right. I don't have my FSM with me, though. I would assume that the sb and bb 727s are the same in this regard.



Hohn

 

[TowPro]

I think your correct, is the front one higher then the rear one? If I recall the Front was out. or was that GM where the higher one was out?

 

[HoleshotHolset]

I'm surprised a transmission vendor hasn't chimed in here... .



They'd know for sure.



You could always crank it over and see what happens.....



On the 47RH/RE (basically a 727 with an OD housing and lots of other neat parts)... the front port (towards the engine) is the outlet to the cooler and the one back behind the pan is the inlet from the cooler.



Matt

 

[parcher]

Find a vendor called "Fine lines" and buy their pre-bent trans lines. Dead ringers for factory original and impossible to hook up wrong, about $35. 00. You should be able to get a set at Englishtown when they have the Mopar event, or go to "Chryslers at Carlisle" that's where I got mine.

 

[Udaloy]

It doesn't matter...

Unless you are looking for the original setup. The fluid goes to the radiator, gets cooled and returns. Who cares which direction it flows through the radiator? Same-a-same.

 

[lgibson]

It has been awhile but I am sure you are correct. The fluid coming from the convertor goes to the cooler first.

 

[Challenger-II]

Originally posted by parcher

Find a vendor called "Fine lines" and buy their pre-bent trans lines. Dead ringers for factory original and impossible to hook up wrong, about $35. 00. You should be able to get a set at Englishtown when they have the Mopar event, or go to "Chryslers at Carlisle" that's where I got mine.

Thanks everyone for the help! I did purchase replacement lines at Carlisle. I am hooking up an auxillary trans cooler and want the fluid to go through the radiator first and then to the x-tra cooler second. I needed to know which port on the trans it flowed out of. More work needs to be done before I can start her back up so, I wasn't able to start and check flow direction.

 

[Hohn]

You have the right approach. If you are running an aux cooler in addition to the radiator cooler, you want the aux cooler AFTER the radiator, flow-wise.



If you don't do this, the radiator can make the transmission fluid hotter than it was before.



On my Mopar, I ran a completely separate cooler for the trans, and used a manual transmission radiator. I didn't like the idea of the trans and engine coolant swapping heat. If they swap heat, then one is simply heating the other.



I wanted them BOTH to cool, not just swap heat from one to the other.



If you are running any kind of stall converter, get the BIG trans cooler (the 26K# GVWR RV model). You can't have too much trans cooler, especially with a stall converter.



The B&M supercoolers are great. Here's my favorite:

http://store.summitracing.com/partdetail.asp?part=BMM-70266



Wish I had the $$ for a sexy E-body. I'll stick with wishing I had the $$ for my clunky B-body for now.



HOHN

 

[Eric Kahn]

the transmission cooler in the radiator does 2 things, it also warms the fluid to operating temp before it starts cooling it

 

[mopars1]

The "front" cooler line close to the bell housing is the out-flow line and the "rear" line close to the extension housing is the return-flow line. Hope this helps

 

[Challenger-II]

Originally posted by Hohn

Wish I had the $$ for a sexy E-body. I'll stick with wishing I had the $$ for my clunky B-body for now.

HOHN

The "E"- body cars are ridiculous in what they are going for! I have had mine before the $$$$ went through the roof so it isn't as painful! Thanks again for all the info!