Well it seems like ya'll know the 47rh in and out so I've got a question for ya'll. I just did a fordcummins conversion. The engine is a 93 and I switched the A518 for the 47rh. Did the whole adapter plate, starter stuff. I'm using toggle switches for the lockup and OD. A few problems that I've ran into are in 3rd gear I can only get 50mph out of and that's with the motor screaming. Overdrive I can get 75mph down hill, but pulling a hill maybe 65. I'm running 3.55 gearing. I'm also getting only 16mpg where with the 518 I was seeing 20 to 25mpg. I also noticed that when I forgot to turn off the lockup and I came to a complete stop my engine did not stall! The tranny was suppose to be a rebuilt one with a new TC. I'm thinking of rebuilding it. Any Idea's what yall think the problem could be? Like I said earlier, the only thing that I changed was the transmission, both trucks besides it being a ford are exactly the same ie weight wise. Also, the ford orginally came with 4:10 gears and I still got only 16mpg with a top speed of 65. When I swapped it to 3:55 my mileage stayed the same I just could go faster as in top speed, hill wise the same. I can't go up a steep hill faster than 45 due to 3rd gear being so darn slow and engine screaming. Pls help

 

btw I did install the TV cable transmission lever thing from the 518 onto the 618. What is the proper way to adjust the TV cable?

 

Yeah, I guess you could do it that way too, I never thought of doing that. I had the 3 pin weather pack connector so that is what I used.

 

Ya. something isn't right. I have 4.10 gears with the 47rh and at 70mph locked up I am at like 1900rpm.. Something tells me yours isn't shifting into O.D. Sounds like you are in 3rd gear locking it up. I would verify that when you flip your toggle switch for the o.d it is actually shifting. Also, when you flip the lock up switch, do you feel it lock up? Like it should feel almost like another gear. If not, you don't have your switches wired right. How do you have them wired.. Center is keyed pwr, front is O.d and rear is Lock up. All you need is to ground out the o.d and lock up. Needs to be ran to one side of the switch and then a lead to a good ground under the dash or to the neg side of the battery.

 

50 mph and screaming sounds like 2nd gear to me. 3rd gear and WOT for my truck is over 80mph.

I know a stock 47RH valve body will only lock when the shifter is in D and it won't lock in 1st when the shifter is in D, so thats why it doesn't stall when you stop. If you started from a stop with the switch in the locked position, it will start out normally in 1st, shift to 2nd and lockup almost imediately, shift into 3rd while locked and if you let it into OD while locked. Now, once its in OD and locked it won't shift out of OD till the converter is unlocked. If the valve body has be modified these things may or may not apply.

 

Yes I feel all three gears shift then I feel overdrive shift when I toggle it same with L/U. I have the tv cable adjusted so that 3rd gear comes in at 25-30mph with medium pedel and if I stomp it to WOT it will kick down to 2nd if it's under 25 and it will not upshift till I back out. I've also have locked the TC in second and let it shift to 3rd and it feels like its dragging the engine down till it gets to around 35mph then seems like the engine catches up. I also have noticed that if i'm going up a steep hill say around 60mph in LU and I take it out of LU engine speed goes up and mph goes down.

 

I'm currious, if the tranny shop actually sent me a V10's tranny, would it act like this? I'm not sure if this is a diesel tranny. They did say it was, but they also told me that I'm getting a rebuilt tranny too and it acts like this.

 

if you are running a gasser tc, it will not work right. I'm not 100% sure if the valve bodies are the same, should be close. But the gasser tc will for sure give u fits

 

V10 and diesel VBs are exactly the same. except for the weights in the gov assembly and the converter being more loose, the rest should be identical. txs, I'll have to refresh my memory, but I was almost certain the pumps were the same 10vane style.

You get into the V8 gas stuff, and there are major differences.

It sure sounds like a V10 TC, but then when you say you feel lockup in 2nd, or 3rd or OD, and the RPM issue isn't adding up.

 

hi, iwas wondering,i have a94 2500,4x4,8800lb,a518,and was wondering what all would have to be done to the tranny,etc.,to put in a cummins and to get rid of the 360?the trans was rebuilt 16 miles ago,the computer died on the way home from the rebuild shop!any help would be greatly appreciated.thanx

 

first, that's a v8 trans, not going to work, you'll need one from a diesel or a V10.