Your 'Guide' to the 727/904 transmission

[66Satellite47]

A 361 is a low deck BIG BLOCK, the case will bolt up to a 440. There are many, many combinations of internal components in 727's BB & SB. The parts are generally the same but have different front servo lever ratios and servo springs, front clutch springs, number of clutch discs, band and clutch materials, valve body & governor settings depending on the OEM application. For a low perf 440 as a cruiser, most all will be fine.

 

[dagomike]

Well I pulled the trigger and I bought the 727 Cable Shift Trans. Popped the pan and took some photos. The valve body is part 2400540. Is there a way to determine if a valve body is reverse manual shift pattern with out splitting it open? I think this thing has a bolt in sprag mod and a manual reverse shift pattern valve body but I cant find any info on the part number for the valve body and to be honest I dont know what to look for. lol. Any help as always is appreciated. Photos attached. Oh and it is a big block transmission.

View attachment 1050752

 

[Dipstick]

The two tangs on the rooster comb (circled in red) means the valve body will work with a console or column shifter. Above that,

the throttle valve is in the fully automatic configuration.

 

[66Satellite47]

I don't think you can go by that. The internal mods used on a manual valve body are what makes it manual. If was a race trans maybe manual, otherwise not likely.. Mopar valve bodies could be modified for manual shift without having obvious signs. Although that does look stock.

 

[dagomike]

I don't think you can go by that. The internal mods used on a manual valve body are what makes it manual. If was a race trans maybe manual, otherwise not likely.. Mopar valve bodies could be modified for manual shift without having obvious signs. Although that does look stock.

Thanks fellas for your advise. I should have known this was for a console shift trans when I pulled what was left of the shifter cable out of the receiver and it had the wide 1/4" groove in the bayonet. I believe that is the final verification for console style shifter compatibility. No expert but I am learning something every day... Lol. I will learn more about the valve body when I pull it and split it open to see what is going on in there. Thanks for all the Help!

 

[66Satellite47]

One of the early DC bible's has the complete description of modifying the stock valve body to a manual shift. That would be a guide.
IIRC the console shift cable is slightly different, but the valve body accepts both styles. May be wrong about that.
The '65 727 I bought had a modified OEM valve body for manual shift, console shifter & cable, late model input to accept the late model converters, and the slip yoke, still with the reae pump.

 

[dagomike]

One of the early DC bible's has the complete description of modifying the stock valve body to a manual shift. That would be a guide.
IIRC the console shift cable is slightly different, but the valve body accepts both styles. May be wrong about that.
The '65 727 I bought had a modified OEM valve body for manual shift, console shifter & cable, late model input to accept the late model converters, and the slip yoke, still with the reae pump.

Sounds like you scored on the 65 tranny. I will split the valve body and take a peek soon. As far as the shifter cable goes this 63 tranny came out a running car that swapped to a 4 speed set up and the cable bayonet groove was the wider one @ 1/4" approx. So many different variables for these cable shift 727`s, you really have to do your home work when purchasing them. Thanks again, for your advise and input. Mike

 

[66Satellite47]

Sounds like you scored on the 65 tranny. I will split the valve body and take a peek soon. As far as the shifter cable goes this 63 tranny came out a running car that swapped to a 4 speed set up and the cable bayonet groove was the wider one @ 1/4" approx. So many different variables for these cable shift 727`s, you really have to do your home work when purchasing them. Thanks again, for your advise and input. Mike

Ya but that was '74 when parts were readily available!

 

[Dipstick]

I was basing my judgment on the throttle valve not being modified to wide open but the orange regulator spring suggests that it could be kitted. Stock springs are black IIRC.

 

[dagomike]

I was basing my judgment on the throttle valve not being modified to wide open but the orange regulator spring suggests that it could be kitted. Stock springs are black IIRC.

I was thinking the same thing as when I compared a valve body out of a small block cable shift 727 tranny I have out of a 65 the springs do look different and beefier. I think I may have found a jewel at a reasonable price. I am gonna have a friend come over and take a look at it that has much more experience with trannys then I do. Thanks for your input, Mike

 

[moparsquid]

This is Bob can you send me a pic of the cable end you need

 

[dagomike]

This is Bob can you send me a pic of the cable end you need

Hey Bob, I don't have a photo, but the one I need has the wider bayonet groove on the receiver end that attaches to the rooster comb area approx. 1/4" inch and the shifter side has the wider 1/8" inch hole approx. that attaches to the shifter. I am not sure about the length I need as I have not found any information regarding that yet. Thanks and let me know, Mike

 

[moparsquid]

Here's one

 

[moparsquid]

Again

 

[moparsquid]

More

 

[dagomike]

Again

View attachment 1051746

Thanks Bob, but that is not the one. see the grove at the end of the bayonet pin. That one has the small 1/16" groove. The one I need that groove is closer to 1/4" wide. That is what I understand from the research I have done. Like I said before I am no expert but I have been studying up on these transmissions. I will try to swing by the shop tomorrow after my dentist appointment and take a look. Thanks, Mike

 

[Dipstick]

Here's a pic I found, cable end on left is for console or column, right is push button.

 

[dagomike]

Here's a pic I found, cable end on left is for console or column, right is push button.View attachment 1052069

That`s the one I need! Do you happen to know what length I need for a console shift car? You are awesome for helping out by the way. Thanks

Note for folks following this thread. The wider groove on the console-column cable bayonet is needed for the additional play associated with these setups. That is what I read during my research on these cables. Please correct me if I understood this wrong.

 

[moparsquid]

Here's a pic I found, cable end on left is for console or column, right is push button.View attachment 1052069

That`s the one I need! Do you happen to know what length I need for a console shift car? You are awesome for helping out by the way. Thanks

Note for folks following this thread. The wider groove on the console-column cable bayonet is needed for the additional play associated with these setups. That is what I read during my research on these cables. Please correct me if I understood this wrong.

Got these

 

[dagomike]

Got these

View attachment 1052185

I will come by the shop tomorrow to check them out. couldn`t get there today. Thanks