help with fuel setup
Thread Starter
Racer
Joined: Jun 2009
Posts: 333
Likes: 0
help with fuel setup
Hey guys , putting a p1 on pretty soon on my stock shortblock ls1. I've got a g5x1 cam and right now stock fuel setup. I dont plan to go anywhere over 600hp, what should i do for fueling? single walbro and some injectors? what size injectors would hold 550ish rwhp?
Racer
Joined: Jun 2010
Posts: 360
Likes: 0
From: Chicago Illinois
I'm putting a p1 on my ls6 and I'm gonna be using 60lb injectors, walbro 255 fuel pump, racetronix harness, and a kenne bell bap. I'm hoping it's enough for about 640rwhp with meth and a blower cam.
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
Simply because there is no significant difference in cost or driveability, I would get the 83lb Siemens Deka injectors. That will give you the flexibility when you change your mind. A 255 and BAP should get you there for supply.
Le Mans Master
Joined: Jul 2005
Posts: 7,121
Likes: 3
From: Shreveport/Bossier Louisiana
St. Jude Donor '08
Agreed. I've changed injectors 3-4 times now and Its more convenient to step it up from the start. Also, you will be good with a Walbro, KB BAP and Racetronix harness.
Thread Starter
Racer
Joined: Jun 2009
Posts: 333
Likes: 0
ive got a 00 frc. Dont want to go over 550-600rwhp cause the motor just wont take that power. I dont mind stepping it up when and if i decide to build the motor... but even if i do im prolly gonna spray it with a standalone.
Pro
Joined: Sep 2007
Posts: 583
Likes: 0
From: Atlanta GA
I will have 42lbs injectors and a kenne bell bap available in about a week. I am putting a bigger supercharger and a bigger fuel system in mine. Let me know if you might be interested. I was running 580rwhp so this is exactly what your looking for.
Wesley
Wesley
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jobberone
Joined: Aug 2003
Posts: 2,062
Likes: 8
From: Kailua Kona HI
Sixty or so will do the job but I agree with Bret. You can grow into the 83# injectors and the duty cycle on them will be much less than 60s. A Walbro and BAP will do nicely for now. You will need a return line if your car doesn't already have one. You can always add another external pump if you change motors and setup and need more fuel. You should add a boost referenced regulator IMO. A good vacuum one will do nicely. 550-600HP is relatively safe in a stock motor with a good tune. I would always add meth to a boosted stock motor for safety regardless of boost as you will keep cylinder pressures and heat down esp in the summer. Your engine will live longer. You should consider a bigger radiator.
Melting Slicks
Joined: Jun 2005
Posts: 3,088
Likes: 61
From: NY- 2013 Corvette Challenge Champion-2013 Index Combo Champion 2015 CC/MM Champion
St. Jude Donor '07
I have a set of 60# and a set of 83# sieman deka injectors.The 83's are like new,Less then 30mi.The 60's are a few months old.Let me know if you are interested I'll pm a price to you....................Paul
