litre's gallons per hour

[raustinss]

I have the chance to purchase a new fuel injected tank for my Chevelle , I will be running a ls7 with 650 hp ish , mainly daily driver is the plans . Does anyone know what my projected power levels will need as litres or gallons per hour. This tank comes with a pump which flows 250 litres per hour . Any help is greatly appreciated
thanks Ryan

[dontlifttoshift]

That's right on the edge if I remember right.......It's not the pump I would run for an engine that serious.

[GoodysGotaCuda]

I'd be looking for dual 250s [staged] or perhaps a single 400lph pump. Line size is important too...

[andrewb70]

I have the chance to purchase a new fuel injected tank for my Chevelle , I will be running a ls7 with 650 hp ish , mainly daily driver is the plans . Does anyone know what my projected power levels will need as litres or gallons per hour. This tank comes with a pump which flows 250 litres per hour . Any help is greatly appreciated
thanks Ryan

Why not do this?

https://www.pro-touring.com/threads/...Buick-Skylark)

https://ls1tech.com/forums/conversio...l#post19735890

If I was to do my GTO over again, that is what I would be doing. The stock CTSV fuel module will happily feed that HP level.

Andrew

[raustinss]

This new tank is apparently baffled and ready to rock ...its just a matter of the pump that comes with it can supply enough fuel. If not I'll probably end up using a Ricks tank . At more then double the price

[CarlC]

If the price is right the pump can be changed to a higher flowrate model.

However, the typical "255lph" high pressure pump, made by TI Automotive/Walbro, flows 55gph/208lph @ 60psi

At 6lbs/gal, that's 330lbs/hr.

Normally aspirated engines require approximately 1/2lb/hr per horsepower of fuel. So, 330/0.5 = 660hp.

As Andrew mentioned, a fuel module is an option and has the best fuel control available. In your case the Gen5 ZL1 Camaro module would be a great choice and flow 65gph / 247lph @ 60psi, enough to support 780hp naturally aspirated. It's much less expensive as well.

[MonzaRacer]

A Walbro 255 is speced at 750hp, NOW you have to take into account the weight of the fuel and size of line and G forces involved.
IF it comes with 255 pump in tank a "transfer pump" inline can alleviate any doubts and also a fuel pressure cut off so that if it losses fuel pressure below a safe area it kills engine or causes it to stall.
This is common with NOS set ups and I have even installed warning lights, bright blue as other colors confuse you in the heat of racing/aggressive driving. A bright blue light upon fuel pressure dropping also lets you know if your system is weak or your car launches like a top fueler.
Friend had car we built to race, kept flashing light then car ran fine. Turns out we monitored his car and it was launching so violently his 65PSI race fuel setup was going down to 7 PSI on launch!!!! On carbs, minimal issue as long as float bowls can keep up. He had on of the new constant flow setups, I forget who makes them, Superbowl or something. BUT on EFI a properly designed setup is critical.
Lift pump in tank works for stock but make good deal more power and you should upgrade or include pressure pump closer to engine if you intend to beat it hard just for safety.
Good Luck

[CarlC]

A Walbro 255 is speced at 750hp,

Assuming that the pump gets 13.5v (which it likely won't) and there are zero frictional losses (never happens) a GSS340 pump will supply 58#/hr @ 60psi. 750hp will require 62.5#/hr at 0.5BSFC. Betting a GSS340 will feed 750NA FWHP is too close a margin.

[GoodysGotaCuda]

Assuming that the pump gets 13.5v (which it likely won't) and there are zero frictional losses (never happens) a GSS340 pump will supply 58#/hr @ 60psi. 750hp will require 62.5#/hr at 0.5BSFC. Betting a GSS340 will feed 750NA FWHP is too close a margin.

I didn't check the math but I certainly agree with the answer. There's no way I'd be comfortable with a 255lph for that much power...