Fuel Demand question for the experts

William741

Founding Member
Aug 18, 2000
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Bellefontaine, Ohio
Since i've bought my GT you can see the additions i've made to it in my signature. Currently the only fuel system mod is a 255 in-tank. The next step for the car is going to be a man-o-war 331, same heads/intake and either a blower kit, or im going to build a turbo kit. It's going to be awhile before i get the money:Damnit: but I am wondering about what size of injectors I am going to have to run, and what additional pump I'm going to have to add in-line. Also will the factory lines/rails be enough? I know that those heads/intake won't make the most power, but it will be plenty for me for now. Thanks for any help, Will
 
I've seen enough threads where the power adder boys talk about their fuel systems to give you a bit of general info.

Some with combos similar to what you describe use only the 255 in tank pump but some also use a second pump on the other hand. With a stout forced combo ...... I rather have too much than too little fuel.

The 94-95 rails have been used on some pretty high horsepower combos and I think it would be pretty safe to say they are ok for your plans.

As for inj size, no less than 42's.

If you go blown, a ProM 77 or 80 maf will be OK. You also could use a Lightning maf as well.

Some turbo combos use a blow thru maf.

You will need a custom tune to bring it all together.

Why not start lurking a bit on the various power adder forums for more reliable info?

Grady
 
All depends on the blower/turbo size and power you want to make. Anything 600rwhp and below 42lb injectors, stock rails, your 255lph intank and 255lph Walbro GSL392 inline pump will handle it just fine. If going beyond 600rwhp time to invest in a fuel system along with some 60lb hi-imp injectors.

Troy