that doesn't sound too bad. would after market chips still work on the truck if the p-pump was put on instead of the vp?

Nope.

Just a personal opinion here, but if you want a P-pump why not just transplant a 12V in there. Probably cost you less by the time it's all said and done and once you change the pump over you have lost all the good things that come with the 24V anyway.

I was thinking about a p-pump a while ago,and I'm going to do it next time if I have the money,I wish there was a way to have cruise control is all.
24 valver would have better airflow no?

yeah, the 24s breathe better, id stick with a VP44, you lose alot of driveability with a p-pump conversion, unless you are cranking some massive power numbers, its better to stay with the vp44. think of it like this
brand new vp44- $1170

p-pump conversion
p7100-1170
lines 400-500 depending on company
front cover and gear- anywhere from 150 up
custum throttle linkage
injectors- 600-1600

its some much cheaper to just get you a new vp44.

Now with the Monster VP You can get alot more out of your truck like you would with the P-pump. But again, Its for the serious power junkies. And what I heard when i was gettin my head work done was a stage 3 port and polish 12v head will flow just as much as a stock 24v head.

I was just wondering why a person would swap a 12 valve in where you have a 24 valve,then have to stage 3 port/polish the head so that it will flow as much as the engine you've already got in there?'
Wonder how much a stage three port polished 24 valve would flow...:humm:

24 valve head will alway out flow a 12 valve, and if what youre saying is true about a 12 valve stage 3 head flowing as much as a stock 24 valve head, isnt it cheaper just to put a stock 24 valve head on it then or even better, port and polish the 24 valve head?

Airdog sets their pumps to 15psi for the vp-44 cummins.


but it can be easily increased with some washers.

id keep it around 15, that plenty, too much PSI will kill you pump just as quick as too low of PSI. I had a bosch representative at cummins, tell me that when i talked with him about it. any more then about 20-25 will kill the pump, itll burst the diaphram inside the pump. Just like when a lift pump goes out, the thing will work for a while but eventually itll fail.:U: