I know my reman pump doesn't run nearly as hard as the original pump....

 

educate me... what's "DV's" ?

 

No boby tell Mica what a DV is

 

Delivery valves. They provide the sharp pressure increase that the injectors need to operate properly. If the capacity is too small they will limit the power.

 

thanks for your helpful addition (loch) to the thread!

 

well, it could be argued that most don't get real power gains in a p-pump unless it's a 160-175 pump

 

Where is the good Pastor when we need him!

 

I wish Bosch made a rotary 6 pump for a larger application that we could rework to fit the 1st gen. The thought of going to a pee pump and loosing the timing advance makes me sick... If I could find one I would have my machinist friend "fix" it to fit our trucks..

 

I've tried DV's out of 3 different VE applications as well as making my own set. All I ever saw was marginal increase in smoke until I made my own, and even then it wasnt a huge power gain.

 

I don't think even with the proper amount of air that you would have 500hp out of the ve w/o drugs and definitely not to the ground. Its probably possible if your doing a little customizing such as shaving the timing piston and doing some custom work to the head(stock 12mm not 14mm). Not to mention those would be some big injectors as well

 

486hp was put to the gorund with a 12mm pump about 2 years ago....

 

With what modified? Speaking out of absolutely no real experience with high hp out of these it sounds like its more the just turning some screw and adding a 3200 spring to get that fueling?

 

from what little i know from reading through stuff... supplying the VE even the 12mm head with enough fuel... via something bigger than a piston pump (somehting wanna has been stressing lately) would be a part of the high HP battle.

 

A contribution of course. I forget if it was just Bgilbert or someone else as well who put on large supply systems and seen very little gain. Many things could have contributed to that but I don't know. I think it only because really neccesary once you reach a certain level and before that level it won't actually make a difference. Not sure if that makes sense but its hard to explain but easy to understand in my head

 

yea that made perfect sence to me... i have no high rpm fade in power issues... but i am still running stock injector and can't outflow my fuel system. same fuel setup with huge injectors and enough air to burn the fuel, no way could my lift pump keep up.