Engine/Transmission (1998.5 - 2002) Horse power limit of stock vp44

[DWest]

How much horse power can a stock vp44 sustain? Last Saturday I pulled in a truck pull and had a slight miss under full power. Last year I pulled with the Smarty stacked with my comp and had a bad miss. With Mach 3. 7 injectors and a comp box on setting #5 am I at the limit of the vp44? DWest

 

[Huff N Puff]

On just Diesel:

How much horse power can a stock vp44 sustain? Last Saturday I pulled in a truck pull and had a slight miss under full power. Last year I pulled with the Smarty stacked with my comp and had a bad miss. With Mach 3. 7 injectors and a comp box on setting #5 am I at the limit of the vp44? DWest

I think a stock VP44 is capable of about 650hp. If it was missing, your fuel delivery system may not be able to supply the VP44 with enough fuel.

 

[EBung]

Were you running timing with the Smarty? To much timing will cause a mis for sure. What was your fuel pressure?

 

[aircop]

Sounds like your not getting enough fuel to the VP. What kind of pump are you running, what kind of fuel pressure do you have at wot.

 

[DWest]

FASS pusher pump

I'm running the FASS pusher pump with a constant 15 lbs of pressure and I took the Smarty off because it makes my cruise control surge constantly. DWEst

 

[NoSeeUm]

I how little notion about why you have a miss, but this thread might give you something to consider. I never used an Edge, but still developed a miss at times. Typically cooler OAT, high power / boost.



If you still own a Smarty the new REVO version might be worth giving a try. A couple of other pullers are reporting good results with smooth power to 4000 rpm using a TST comp or Quad Adrenaline. Some are saying cruise is fixed, others say it is the same.



There is only one VP44 truck personally that I know of that makes 600-650Hp. Last I talked to the guy he was running Mach 6+'s, an Edge Comp and twins (s300/s400). His fuel supply system was solid.



Jim