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Torque converter slippage

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Hi guys, I have a 93 Cummins with an auto tranny. Evrything is stock. Expressed as a percentage, how much torq converter slippage is common for these trucks? 8% 10% 15%?? 

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I can't answer your question, but I think that would largely depend on what converter you have, what the stall is set up to, and how much load is on the motor at any given time (more load = more slippage). Someone might have some information about a stock powered truck with a stock trans though.

  • 2 months later...

If temps are regular over 150deg with no load I'd say theres  large percentage of slipping 

No lockup in a 1st gen.

  • Owner
9 hours ago, kzimmer said:

No lockup in a 1st gen.

 

Depends. 

 

TorqueFlite 727 transmission No, Its a 3 speed with no lock up. This was renamed to 37RH

 

There was a 4 speed with lock up. A518 model. Which this came to be renamed 46RE later in life.

 

Then the 47RE came out in 1994. This was called A618 transmission (old name).

Right. So... No lockup in 1st gens.

It was a 4 speed (727 with an OD housing added on) but didn't have lockup until 1994 when it was renamed to the A518/46RH. At least not in the diesels.

Edited by kzimmer

  • Owner

Thanks. I remember dealing with a 1st gen with a PCM issues about 4th gear or lockup. But never got to play with the truck to see. 

I had to google it to be sure lol, It sounds like the 4 speed might have come in around 91.5?

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.