I'm in the process of building up the engine, should have it ready in a few weeks. It's a 383 with VRE Victory Lane rotating assembly, Ai-ported Trickflow heads, ported LT1 intake, BBK 58mm TB, and I'll be boosting it to around 15# with a Procharger F1A. I've got some questions about the fuel system though.

I'm planning:
-Lonnies Dual Intank pumps
-stock lines
-boost referenced regulator (Aeromotive?)
-72# Low-Z injectors with Versafueler

I'm planning on getting an LT1 kit from Bob at EPP. Am I correct in assuming I can ditch the ATI FMU and fuel pump? Will I need anything else to fuel this bad boy?

I need to ask him also if I can get a "tuner" kit or something with just the bracket, pullies, head unit, and EPP FMIC. I'm going to have to fab up my own bracket and modify the piping, so I don't think I'll need any of the other stuff that comes with the kit.

 

I'm planning:
-Lonnies Dual Intank pumps --- I don't know enough to comment on lonnies pumps but run your set up by him and he won't steer you wrong if its not enough he will tell you.

-stock lines---- I wouldn't use stock lines I would use 10an feed and 6an or 8an return

-boost referenced regulator (Aeromotive?)--- Aeromotive is a good reg

-72# Low-Z injectors with Versafueler--- get the 95# injectors!

I'm planning on getting an LT1 kit from Bob at EPP. Am I correct in assuming I can ditch the ATI FMU and fuel pump?--- YES you must ditch that stuff---- Will I need anything else to fuel this bad boy?-- modified fuel rail

I need to ask him also if I can get a "tuner" kit ---- He should be able to provide you with just head unit bracket and pullies ask Lonnie about that to.

 

why not stock lines? Racetronix suggests a dual-intank with stock hardlines is good to over 700rwhp.

As far as injectors, every calculator I've seen says 75ish # injectors will support what I'm looking for. Any particular reason to go with the 95's?

 

You do not want skimp on your fuel system. How many people do you know with stock lines and over 700RWHP? I don't know anybody and I woulnd not trust stock lines at these levels even if it did work it would be pushing things to the limit.

Throw away all the injector calculators they don't work for blower cars. Would 75#s work probably but you would be pushing them hard. 95#ers Same price just as easy to tune and won't have to work near as hard as the 75#s.

I maxed out 75# injectors with a D1 and I currently run 95# injectors. Always go bigger on fuel system ALWAYS.

Jeff

 

oh I understand that. just if Racetronix is saying it'll work, I have no reason not to believe him. I know xxsaint69xx was pushing close to 700 with stock reg, fuel rails, and lines. although I know he said it was iffy


works for me. how much boost are you running on the D1?

 

You can see my setup in the boosted lt1 sticky at the top of the forum and some of the latest details in my post "its running again"

 

awesome, I'll check it out. right now I'm looking up info for modding the fuel rails.

 

When we run 9.44 we had, twin intank pumps (walbro 255l/h gs340?), caspers volt booster, stock fuel lines, stock FPR, stock fuelrails, 85lbs injectors (aprox 90% DC)
ported TFS heads, F1 17psi, FMIC, 60hp N2O (3600+lbs car)

 

daaaaang. well alright then, someone who has actually done it. was this on a 383? what cam were you running?

*edit* nevermind, just saw your sig

 

o you still have the stock fuel lines?

This is the question im asking myself right now. I am sending my sender to lonnie today for the dual in tanks, and dunno if i am going to keep the hard lines or swap out to like a -10 and -6 or 8return

Im going to be running somewhere in the area of 15-20psi im guessing and with my ysi, it should be making around 700rwhp from everything ive seen. I just dunno if upgraded lines are really a necessity. Im also currently running 65lb motrons, and have heard they are still good if you up the static pressure to like 60psi at idle like the ls1's and just retune the car from that

 

i made 697rwhp only with 15 psi...now i am running 17psi so i know i am well over 700rwhp. Stock fuel lines and stock FPR here as well. I would go with a a 95lb injectors though.

 

sounds pretty similar to what I'm planning on running. although I'm planning on running stock fuel pressure so a larger injector will be necessary. plus everything I've read indicates the low-impedance injectors are better when you get to that size.

 

I'll stick with my original advice on this subject. You can save money by leaving the stock lines in place but you will be pushing it to its limits or beyond.

 

I dont plan on having 700 RWHP, I might have 700 at the crank and I upgraded to a 8 feed and a 6 return, -12 to the pump from the tank on mine, fuel is one thing you dont want to mess with on a FI car. I also welded fittings right to my fuel rails and Im using an aeromotive A1000 regulater.

only thing I wish I would have done was put the fitting on the passanger side of my fuel tank but back at the time I was going to keep my borla exhust so I couldnt put it there. now I decided to dump the exhust out the sides of the car.

 

Nice fuel system...Looks like you have a -12 fuel cell bulkhead style fitting installed in the bottom of your tank? Has it worked okay for you???