Dodge Cummins Diesel Forum banner
  • Hey everyone! Enter your ride HERE to be a part of this month's Ride of the Month Challenge!

1 - 14 of 14 Posts

·
Registered
Joined
·
308 Posts
Discussion Starter #1
what is a hot rod vp44 injection pump?? thanks
 

·
Registered
Joined
·
1,378 Posts
It's just like the stock injection pump but plus 100 hp (?). I don't quite know how they go about it, but it's a bolt on hp increase. Pretty tempting if you just smoked your stocker. Probably similar performance to 100 hp injectors. (which I can say is impressive) That would be a LOT of fuel for your rig the way you have it set up. Probably need 5", definitely need a pulse manifold, Likely need a turbo. I am guessing you already souped up your trans to take what you are giving it, but your rig would be FAAAAST! (455 hp?) Probably fast enough to start getting creative at breaking things! :)
 

·
Premium Member
Joined
·
8,554 Posts
a waste of money!
 

·
UNDERCONSTRUCTION
Joined
·
1,333 Posts
After 500hp the HRVP doesn't do much so i would stick with just getting an standard output pump.
 

·
Diesel South
Joined
·
1,545 Posts
It's just like the stock injection pump but plus 100 hp (?). I don't quite know how they go about it, but it's a bolt on hp increase. Pretty tempting if you just smoked your stocker. Probably similar performance to 100 hp injectors. (which I can say is impressive) That would be a LOT of fuel for your rig the way you have it set up. Probably need 5", definitely need a pulse manifold, Likely need a turbo. I am guessing you already souped up your trans to take what you are giving it, but your rig would be FAAAAST! (455 hp?) Probably fast enough to start getting creative at breaking things! :)
are you talkin about?
 

·
Diesel South
Joined
·
1,545 Posts
they say the Hrvps have made a 100 horse power over stock that is how it is advertised!! but on my truck and about every other one i have seen they don't do anything more but hit a little lick, i have also heard they are more durable but who really knows
 

·
Premium Member
Joined
·
4,256 Posts
From what I have learned from the mechanics I have talked to, the HRVP is a way to get $1,800 for a $1,200 part. Based upon the internal design of the pump, there is very little to nothing mechanically that can be done to increase the amount of fuel it will pump.

Will others tell you differently? Absolutely. Might they know more than the mechanic I talked to? Absolutely.

The recommendation we got was to go with an SO pump and look toward the electronics, injectors and tubes to increase fueling.
 

·
Go for Broke
Joined
·
7,191 Posts
HRVP will give you a little more HP on a stock truck....but you wont see much on a truck with mods....like a box, injectors and turbo
 

·
Tech Specialist
Joined
·
1,493 Posts
On a stock truck it would be worth it (if you wanna risk having a lopey, choppy idle) but on a truck with a wire tap box it won't do any better than an SO pump.
 

·
Registered
Joined
·
308 Posts
Discussion Starter #10
whats an SO pump???
 

·
Registered
Joined
·
1,750 Posts
Isn't a HRVP just a SO pump with the electronics turned up internaly? Other than that I cannot see where ti would be made any diffrent.. I think this is why over 500hp most electronics are not going to be able to turn the pump up anymore...
 

·
Mopar1973Man.Com
Joined
·
26,259 Posts
First off...

There was 2 styles of engine produced...

SO Engine (235 HP/460 TQ)
HO Engine (245 HP/505 TQ)

But the fact remains that the SO VP44 pumps more fuel than a HO VP44. So the HRVP44 used the SO Pump as a base to build from...

All I ever head about HRVP44 pumps is they don't typically last as long, they cost more, and they tend to have a loppy idle...

With today fuel prices I would be looking toward MPG's and not to much for HP/TQ numbers...:w:
 
1 - 14 of 14 Posts
Top