hot rod vp44 vs. dragon fire

[06cumminspower]

i have almost 300k on my stock vp and am considering an aftermarket pump i talked to industrial injection and they said the dragon fire would be to much for a daily driver but i wanted some other opinions that might have experience with both. and i also have an air dog to support higher fuel needs.

 

[02HO4X4]

Just go with an SO pump.

 

[06cumminspower]

what is an SO? and where can i find one.

 

[cumminalltheway]

SO=standard output. an vendor that sells vp44s will be able to get you one

 

[cummins724]

SO is a stock vp pump. You will be better off & it will make more power than you need for a DD.

 

[06cumminspower]

so it really is no better than my stock ho pump, right? i am running a edge juice with the hot unlock and it pulls hard until about 1800rpm and it cleans up every bit of smoke, is injector all i need to fuel it hard past that?

 

[sstockton]

If you're running an HO currently, the SO pump will be a nice upgrade over that. The SO pump has larger plungers and barrels and will move more fuel up top. The HO pumps tend to fuel a little harder down low. If you don't have injectors already, you aren't seeing the full potential of your box. I definitely wouldn't recommend a dragon fire without some pretty serious sticks.
Sean

 

[cummins724]

so it really is no better than my stock ho pump, right? i am running a edge juice with the hot unlock and it pulls hard until about 1800rpm and it cleans up every bit of smoke, is injector all i need to fuel it hard past that?

A hot rod pump is basically a SO pump with HO electronics.

 

[sledshaker]

Any pump you get will start defueling due to the trucks computer. To get it to fuel hard all the way to the redline will take a box that allows it to do so.

 

[red dodge2]

i would just go with an SO pump. you can still make 550-600hp with that pump. i had a dragon fire vp on my truck a while back and i didnt think it was nothing special.

 

[yoyoyoyo!]

Contact Adam, his screen name: Cummins35.9 he has amazing deals on VP's nobody can get you a cheaper one.

 

[cummins724]

i would just go with an SO pump. you can still make 550-600hp with that pump. i had a dragon fire vp on my truck a while back and i didnt think it was nothing special.

I'm at 611 right now with only 200hp injectors. The SO pumps can go over 600hp for sure.:rockwoot:

 

[MD-LUCKY]

I've been running one of these pumps for about 2 years now:

Rebuilt Bosch VP44 Diesel Injection Pump (SHO): Source Automotive Performance Diesel

When I talked to Rip, he didn't make any absurd claims about horsepower gains. He told me it would fuel like an HO in the low RPMS, and an SO in the upper RPMS.

Seems to do exactly that. I made 350hp and 889tq on stock HO injectors. Made a little over 430hp on crummy Jammer injectors.

I didn't know anything about the miss/stumble until I read other people noticed it. I kind of can see what they are talking about, but I really don't consider it a miss or a stumble. Every now and then it is just a slight burp, something that I wouldn't have noticed if I wasn't looking for it. Maybe it is different in an auto truck.

If I had to do it again, I would have just p-pumped the truck. But, if I just wanted to get a decent VP pump again, I would buy the SHO pump.

 

[paulb]

Rip asked me to test the SHO pump when he first started to offer it. I ran it for about 6 months. I liked it alot. When my current VP44 goes bad, that's what I'm going to put back on.

The surge that I had was more like a slight lope. My girl friend said it made my truck sound "mean". We played with different offset keys to change the static timing (I know there is currently another thread on that subject), but the "stock" key it came with performed the best for me at the drag strip.

For most people the SO pump is the best bang for the buck. It's hard to justify the extra money for a SHO (hot rod) pump.

Not all of the hot rod pumps are the same. It's not just a change of electronics. At one time I know most of the hot rod pumps were using the cam out of a HO pump and the pistons out of a SO. This gave high lift, and large pistons. That was part of the expense. You needed two pumps to make one.

Paul

 

[kipo]

didn't Winslett make more power with his HRVP than his SO?

 

[Ph4tty]

didn't Winslett make more power with his HRVP than his SO?

Because piston size is the same so they both flow the same amount of fuel.