Re: 727 or 904 behind Cummins in a Ram Truck
 

What's neat and why you see it alot is the Cummins 4BT and 6BTdiesels have been used by Dodge, GM and Ford in various chassis over the years (a long time) and the key item is the adaptor plate....this isn't an after market item, but a necessary piece to make the engines compatible for all the different manufacturers.....bread trucks were/are great places to find these engine/trans combos and since Ford and GM both built them the chassis would usually have the 4BT and either one of the matching trannys with the appropriate adaptor plate (the 4BT and 6BT generally use the same adaptor.....if you go on EBAY and do some general searches on 4BT, 6BT in parts there usually is some things there to let you see what these are......


D. L. Rambo

Re: 727 or 904 behind Cummins in a Ram Truck
 

I forgot I had this web site in my favorites

http://www.4btswaps.com



D.L.Rambo

Re: 727 or 904 behind Cummins in a Ram Truck
 

Nice site. My main question is what to use for trans and converter and how much power can be made reliably and without spending a ton of money. Application would be 2wd and probally a car or 1/2 ton pick-up.

Re: 727 or 904 behind Cummins in a Ram Truck
 

Curt,
I with the exception of the Aisen transmissions that come in the new Dodge Cab and Chassis, I don't think any Cummins powered Dodge has ever had anything but a Mopar automatic of some sort behind it. Until the six speed automatic that is now availble, the manual was always the better choice.
Bill

Re: 727 or 904 behind Cummins in a Ram Truck
 

Bill,

I just googled the '89 Dodge diesel pickup options. The 1st generation could be had with a manual or a 3 speed automatic. I could not find anything on what the model of the auto was.

All 3 of the Dodge's I have owned had a Mopar automatic for a transmission. As stated the 2002 trans was junk., I think only produced 1 year.

The best thing about my 2005 is fuel mileage. 22+ at 75 on the interstate! 18+ stop and go.

#5457

Curt Rees

Re: 727 or 904 behind Cummins in a Ram Truck
 

Chris,
To date, the Cummins has had six automatics put behind it. They are:

1) 727-Chrysler built
2) 47RH-Chrysler built-basically a 727 with an OD unit and Hydraulic Governor
3) 47RE-Chrysler built-basically a 727 with an OD unit and Electronic Governor
4) 48RE-Chrysler built-basically a 727 with an OD unit and Electronic Governor-High Torque Capacity
5) AS68RC-Built by Aisin Seiki-Six Speed-Fully Electronic-Has PTO Provision
6) 68RFE-Chrysler built-Six Speed-Fully Electronic

Starting with the 47RH, the alpha-numeric code describes the model designation:
The 4 means 4 forward gears---- a 6 means 6 forward gears
The 7 means high torque capacity-----an 8 would be the highest torque capacity
The R means rear wheel drive
The H means hydraulic control----the E means Electronic Control-----the FE means Fully Electronic Control

As already stated, the Cummins has it's own bellhousing pattern or block plate pattern-however you want to describe it. It is different than the SB and BB patterns. As already stated you could switch the block plate if you wanted to try a Ford or GM transmission.

If you are not going to use a controller, the 727 or 47RH would be your only option as they require no electronics to function.

Send me a PM if you have more questions

Re: 727 or 904 behind Cummins in a Ram Truck
 

You might call A&A Transmission in IN. or check out their web site they are good with automatics especially those Chrys. Phone 317-831-3066 or aandatrans.com or aandatransmission.com

Re: 727 or 904 behind Cummins in a Ram Truck
 

89-91 had a 727 trans. Will fit a Viper or Iron V10 and the Cummins.

Re: 727 or 904 behind Cummins in a Ram Truck
 

Here is what I did. I have a 89 jeep wrangler with a 4bt cummins with twin turbos estimated around 130 hp 550 ftlbs I am using a 700 R4 with the updated (4L60) internal parts, so it has o.d and lock up converter. So you can use anything you want. You just have to make it work or spend around $1600 for the adapters,