Sloppy converter in 93 auto

[98rammer]

3600 rpms? f-l-o-a-t-i-n-g!



i myself can atest to the stock converter being a piece of junk! the stall speed is simply too high to transfer power below 2500rpms. imagine two fans across from each other. one spins and the other turns. fine. now, replace those fins in the fan with say... paper plates (with the little ridges on the side). hmm, it takes an awful long time to get the second plate moving. that's the way it is with the stock torque converter. as for the aftermarket converters: in the begining, a lot of converters/remilled stators had better (lower) stall speed, but they didn't improve torque multiplication). now most of the converters are very similar. good luck with your choice!



Tom

 

[nascar mark]

Originally posted by 98rammer

3600 rpms? f-l-o-a-t-i-n-g!





now most of the converters are very similar. good luck with your choice!



Tom

No floating. Have many people who can tell you the same and Old Smoky has been with me when we turned 3600rpm's in Spokane.



Convertors are not very simular. DTT's are not milled stators but engineered bent and welded for better fluid transfer. Be aware.



mark

PDR - Black Sheep Racing

 

[98rammer]

Originally posted by nascar mark

No floating. Have many people who can tell you the same and Old Smoky has been with me when we turned 3600rpm's in Spokane.



Convertors are not very simular. DTT's are not milled stators but engineered bent and welded for better fluid transfer. Be aware.



mark

PDR - Black Sheep Racing

hmm, they say that a 12v cummins will float the valves at 3500rpms with the stock springs. the first gens different?



true on the converters, but wouldn't you say they are more similar? most have changed their designs over the years to accomodate better torque multiplication with the low stall speed. as to the manufacturing process, you're right. i myself will probably go with DTT in the future when i can afford it.

 

["Mad Max"]

Ok, I just got my '93 back from the shop, and they gave it a clean bill of health - transmission in good shape, looks normal, valves check out, lines tightened, etc. So, at 210,000 my rig seems to have a good baseline.



Now, they said I had a A-904 transmission. Can anyone out there confirm that a 904 would go behind a diesel? I'm used to having a 904 behind either a slant 6 or a low power 318. The 440 in my 71 Demon makes 513 tq and 447 hp, and is a ton o' fun but it also has a bulletproof old school 4-speed behind it. A 904 would grenade itself in about 10 minutes the way I drive... .



On top of that, do y'all know if DTT makes a converter for the A-904?

Here's what's on my Christmas list - Gauges (pyro, boost, tach, trans temp - to start), then I'm going to make a custom aluminum 4" inlet tube to the turbo along with a K&N, then the DTT converter. In the mean time I'm going to do the pump tweaks to up the rpmometer.



Good tips y'all - be talking with ya.



Laters, Sam

 

[BushWakr - RIP]

I don't know about 904... . but, if you're driving a 93 you have an

A518. It is a 727 torqueflite with an Overdrive (OD) on it.

DTT does make components to upgrade these. Mine works awesome !



Bob.

 

[Paychk]

I'm confused or I'm going to cause more confusion but... ... . the 93 manual says the Cummins came with a 3 speed 37RH or a 4 speed heavy duty 46RH transmission. Did Dodge change the # system or what?

 

["Mad Max"]

That's what I was curious about too - now I'm not very convinced that this shop is as hip on CTD's as I've been told. The dealer said I had the 46RH and this shop says otherwise.



I just got off the phone with the dealer and they ran my VIN - they say it's a 46RH, and said the A-904 is stronger than the 46RH and A-518's were. Sooo, looks like I'm just going to have to get greasy and get the numbers off the side and decode for myself... as usual.



Either way, a DTT 89% is on my wish list - no doubt.



I'll post back when I get this sorted out. Thanks fellas!



- Sambo

 

[BCaldwell]

possibly different identification system on either side of the border bill

 

[BushWakr - RIP]

Bill you may be correct about above/below the 49th but I have never heard of our transmission referred to as anything but the A518.

Now, my 93 manual also has the other mentioned in it, and it does NOT mention the A518, so go figure... .

I think that the reference to 46/47RH is basically referring to "revisions" of the original eg: 727 ---> A518(revision includes OD unit)---> 46RH--->revision updated whatever-----> etc.

If anyone can answer this definitively go for it.

When I look on DTT's site for example you see the A518 referrenced there for our truck year.



What do I know, I drive an auto since I can't keep the shift pattern straight on a stick.....

ps: yes I can so reach the peddles...



Bob.

 

[DPKetchum]

The 47rh is the electronic version. Never saw one in a 1993 unless it a rare bird and was the last of the last to rolloff before model change but I would'nt think so. It would be like a 93 with a piston type injection pump instead of rotary.

 

[Snow man]

the $^Rh is not the electronic version,it is the hydro version,the 47RE is the electronic governor version it was used from 96 on up to present. The 47 RH was used in 95 and 94.

 

[DPKetchum]

you are correct/s9rry forgot my h and e

 

[dan brooks]

Originally posted by Snow man

... The 47 RH was used in 95 and 94.

Does the 47RH have a lockup converter, and can the 47RH be swapped in for an A518/46RH with no computer mods? Just wondering if it may be a better trans than the A518 and maybe a cheap upgrade (if there is such a thing..... ).

 

[Paychk]

Any help?



http://dodgeram.org/tech/transmission/4xrh.htm

 

[Paychk]

Disregard my last post that is for 94 and up

 

[boatpuller]

I remember seeing this explained on this site before, hope I',m remembering correctly:

The A518 is the option code when ordering the truck with the 4 speed heavy duty automatic which is the 46rh.



Hope I remembered it correctly and that this answers your question about which transmission you have, it's not a 904 it's both a 46rh and commonly called A518.



Happy Rammin,

Caleb

 

["Mad Max"]

Okay, go figure - I talked to the bubba at the shop that did the transmission service, and he again told me "904". I counted to ten... then I asked him if the kit they used to service my transmission had both the 727 and 904 gaskets in it - It had to have one or the other, but because we're all thinking it's an A-518 I thought it might have both and simply decoded to a 904 in their parts book, and I figured this guy wasn't the actual dude that did the work, but rather his boss. - Sure enough, the kit they used contained both gaskets and the trans I have is, I now firmly believe, an A-518, or as the dealer calles it, a 46RH.



Whew, that was fun... . I hadn't quite expected to invoke all of these responses - but there is no doubt this is the place to ping good questions. Now I just have to get about 4 gauges and call the folks at DTT about a converter... .



Luv 'dem Rams!

- Sam

 

[nascar mark]

Bubba don't know transmission's... ... ... . Bubba knows shrimp!!!!!



mark

PDR - Black Sheep Racing

 

["Mad Max"]

Trans help on earlier post

First off, Happy Holidays!



I just saw that WStrong posted a topic similar to one I posted a while ago, and I wanted him to have access to all of the info y'all gave me earlier - wasn't sure how to get my old post back on so I'm replying to my own - hopefully this will repost and WStrong can read all this stuff.



Thanks guys - have a greast holiday.



PS - got my tach - installing this weekend. I do believe I have caught the bombing bug.....



- Sambo