Engine/Transmission (1998.5 - 2002) California VP-44

[Ragain]

Seems my Dodge has been a little short in the power dept. for the last 3 yrs & a question comes to mind... . 3 yrs ago I installed a new VP-44 while in Ontario, Ca. (bought new from Cummins/Fontana) It was not a REMAN unit. I understand the CA Dodge/Cummins were derated due to emissions. Does annyone know if the HP/Torque ratings are defined in the ECM or at the VP-44? If at the pump, may explain why my truck doesn't seem to have quite the guts it used to have.

 

[Mundgyver]

Do you have the HO or a standard. The HO VP was different internally than the standard. Put one on the other and yes you will loose some power because of the match.

Post your truck sig.

 

[Thomas]

The VP44 has the same part number in an application regardless of delivery state. The ECM part number for California delivery was different than the ECM part number for non-California delivery.

 

[Ragain]

Yes, my truck is a H. O. -6sp std. I am posting this from my wireless phone & wasn't aware the truck sig doesn't show... . sorry.

So then, is the H. O. pump a different part number than the standard duty? I would think the Cummins parts dept. would have matched the number off my old pump... ... . (My fingers are crossed)

 

[Thomas]

. . . is the H. O. pump a different part number than the standard duty? . . .

That is correct.

 

[Ragain]

Oh Boy... ... I will definitely check those numbers when I get home. I know this may be a longshot, but I'll see if Cummins/Fontana will make it right with me if they gave me the wrong pump.

 

[Ragain]

Just talked w/Cummins. This is my interpretation of our conversation... ...

all later versions of the ISB series are factory rated @ 300 hp. Anything different from that is a Chrysler programmed parameter. All VP-44 pumps from Cummins carry the same part #, and there is nothing different from each. Chrysler actually derates these engines with their program software for drivetrain warranty issues and liabilities.

 

[Bob4x4]

If they did the install,did they flash the Ecm at that time. There were some that got flashed and did not run as well later



Bob

 

[Ragain]

I did the swap behind their shop. As far as I remember, I have never had anything plugged into the ECM. (Never had the CEL illuminated either) I haven't driven this truck much in the last 3 yrs and just doesn't seem it has the grunt I remember while under a load. I never put a "tuner" on either. Who makes the best one for towing without doing harm. ('02 3500 NV-5600)

 

[Mundgyver]

All VP-44 pumps from Cummins carry the same part #

I do not believe this is correct. The VP-44 for the H. O. has a different piston diameter and stroke length as apposed to the VP-44 for the non H. O. To get the hot-rod VP-44, I believe thye take the two different VP styles, (H. O. and Non-H. O. ) and mix the longer stroke ability with the bigger diameter to achieve the performance of the hot rod VP-44.

There are in-fact two different versions of the VP-44 out there for the 2001 model of truck.

 

[Bob4x4]

Just talked w/Cummins. This is my interpretation of our conversation... ...

all later versions of the ISB series are factory rated @ 300 hp. Anything different from that is a Chrysler programmed parameter. All VP-44 pumps from Cummins carry the same part #, and there is nothing different from each. Chrysler actually derates these engines with their program software for drivetrain warranty issues and liabilities.

They oversimplified the story... ... ... . there are some well over 300hp factory cpls. There are also several part#s and some oem#s have been superceded a number of times,but all the Dodge app's could get by with just 2 #s



Bob