will a walbro 340 and a boost-a-pump support 700rwhp?
#2
LS1TECH Sponsor
iTrader: (2)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Can it be done... yes.
How reliable will it be at that level... marginal at best.
Can it be done with LS1 factory lines and in-tank regulator system... not likely.
An inline pump will help sustain volume at higher pressures BUT not do much to improve the overall volume capacity of the pump in the tank. Drawing through a pump of lesser capacity inevitably translates into a restriction.
http://web.camaross.com/forums/showt...threadid=70312
How reliable will it be at that level... marginal at best.
Can it be done with LS1 factory lines and in-tank regulator system... not likely.
An inline pump will help sustain volume at higher pressures BUT not do much to improve the overall volume capacity of the pump in the tank. Drawing through a pump of lesser capacity inevitably translates into a restriction.
http://web.camaross.com/forums/showt...threadid=70312
__________________
![](https://ls1tech.com/forums/signaturepics/sigpic3576_1.gif)
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
![](https://ls1tech.com/forums/signaturepics/sigpic3576_1.gif)
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
#4
LS1TECH Sponsor
iTrader: (2)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by blackz93
would 650rwhp be fine for just the 340 and a boost a pump?
W/o a front-mounted FPR line pressure drop is unavoidable.
__________________
![](https://ls1tech.com/forums/signaturepics/sigpic3576_1.gif)
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
![](https://ls1tech.com/forums/signaturepics/sigpic3576_1.gif)
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
#7
LS1Tech Co-Founder
iTrader: (34)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
For 700rwhp with a blower I'd be looking at dual intanks, or like what I did, one more more external fuel pumps with a manually adjustable regulator. I am running a Weldon 2025 single external, Speed Inc. drag tank, and a Weldon regulator. If I were to do it all over again I would have looked into running dual Bosch or Aeromotive external pumps.
Trending Topics
#8
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by Racetronix
That all depends on you operating pressure and BSFC.
W/o a front-mounted FPR line pressure drop is unavoidable.
W/o a front-mounted FPR line pressure drop is unavoidable.
the last time we had it on the dyno it seemed like the FP went down to around 48-49...cant really remember though. that was at 7-8 psi. now were going back with around 7-8 more psi. will the pressure drop of that much more and is that a bad thing?
#9
LS1Tech Co-Founder
iTrader: (34)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I made 705rwhp unlocked.......
https://ls1tech.com/forums/forced-induction/129431-survey-says-705rwhp.html
https://ls1tech.com/forums/forced-induction/129431-survey-says-705rwhp.html
#10
FormerVendor
iTrader: (33)
Join Date: Feb 2002
Location: Lake in the Hills, IL
Posts: 5,052
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
The more boost you push the more the pressure is going to drop. It is a bad thing and the only real way to cure it is to build a fuel system with a adjustable fuel pressure regulator w/ boost referance. Shoot me an e-mail I can get you a list of the parts involved.
Nate
Nate