NE frmhnd

I'm looking at a truck with an A518 that's gone bad. The 46RH will also fit, won't it? But the 46RE won't without a transmission computer.

I've been looking around fleabay and there are a bunch or 46RE/46RH transmissions listed. But it's one or the other, isn't it? I'm thinking I don't want a transmission from a shop that says they have a 46RE for a 95-up Dodge when, if I am right, the RE transmissions didn't come out til 98, right?

I'm also concerned, I looked around, and these places are selling rebuilt units for less than 200 more than a used unit, so how much of a rebuild was it?

I don't need a heavy-built transmission, this is a gasser truck, but still.

KD93

I thought the 46RH and the A518 were the same thing? My 98.5 has a 47RH if that helps. You'll need a computer for that one.

JD730

What year is this gas truck of yours?

You are correct, 46RH and A518 are basically the same trans. However, there's some confusion with that. There are different A518's, there's a gas and a diesel version of the A518, I'm pretty sure the gas A518 had a lockup converter and the diesel A518 never came from the factory with a lockup converter. The RH/RE designation really didn't come in until 1994 with the RH and 1996 with the RE. So your 98.5 has a 47RE, the 47RH was only built for two year 94-95.

NE frmhnd

It's supposed to be a 90, I didn't look at the door sticker when I looked at it. The sticker under the hood said A518. I thought it was 98 when they went to the electronic governor in the trans. I'll have to look closer when I go get it. I'm hoping that I can change the luid and filter and maybe tweak the line pressure and get it going, but would like to take it back east about mid-February and would like a fresh trans in it if I can afford it.

Rick 12v CTD

if it's a 1990 then it's a 727 not an a518.

The only real mentionable difference between the 2 transmissions is the 727 is a 3spd/no od where the 518 is basically that same 727 with an od housing on the back of it. it's a 4spd od trans. If it's supposed to be a 1990, then that's not the factory hood and that sticker is from a gasser or 91.5-93 diesel or something

NE frmhnd

It's the "coming soon" in my signature.

So a non-lockup 46rh will work in place of an A518 provided it is the gasser version? That is what I am trying to figure out. Or will the lockup 46rh work without a lock-up converter?

kensmachine

The only gasser transmission that will bolt up to the Cummins is the 94 and up V10 transmission but it needs some things changed to work Ken

JD730

According to my references the A500 and A518 aka 42RH and 46RH respectively were introduced in 1988. The A518 did not receive lockup until 1992 for gas trucks.

I'm not completely sure, but it should be similar for the gas as it is the diesels. The only difference between a lockup and non-lockup is the converter (obviously), input shaft, the reaction shaft support and valve body. You would need to change some parts basically.

NE frmhnd

OK, so what that means is that my best bet is to find a gasser non-lockup A518 or 46RH. That's what I needed to know.

One more question, do you know if it is possible to swap the transmission controller and torque converter and run lock-up on a truck that originally didn't have lock-up in it?

Thanks

Rick 12v CTD

some how I missed that the truck you're talking about is a gasser, not a cummins. My bad.

JD730

Possible, sure, but how difficult it would be I'm not certain of.

I'm not sure about the differences between how a non-lockup and a lockup gas trans bolt to the engine, but if your going to put a lockup trans in the easiest way to control is how most of us do with the diesels and that's with a switch on the dash.