Fuel injector size recommendations?
Thread Starter
Racer
Joined: Oct 2000
Posts: 456
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Fuel injector size recommendations?
I wasn't planning on doing my stroker motor until later in the year. However, since my recent clutch problems, I think I am just going to start now. I am going to do a 388 build-up on my '94 LT1. I have most all the parts except a few components- one of which is fuel injectors. What size would you recommend? 30lb or 36lb? Is there a standard(lbs to cubic inches). Any help is always appreciated.
:cheers:
:cheers:
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: Fuel injector size recommendations? (Dr. Doom)
I would start with 36's. I'm looking at going with at least a 30 for my 350 because the duty cycle is far too high with my current 24's. Knowing the duty cycle of my 350 I couldn't imagine running anything less than a 30 on a stroker. Of course cam choice is greatly going to affect fuel requirements.
[Modified by Nathan Plemons, 4:11 PM 5/11/2003]
[Modified by Nathan Plemons, 4:11 PM 5/11/2003]
4th Gear
Joined: Dec 2002
Posts: 4
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From: Bartow Fl
Re: Fuel injector size recommendations? (Dr. Doom)
Go by what kind of HP you anticipate making. For example, my engine DD2000 predicted 500hp. I never saw that, never got a chance to get the tune right. Anyhow, I did get it to run a 13.6@105, and was spraying a 150 dry shot to go 12.55@117. That was all on street tires, so the car should have run much quicker. I was running 30lbs FMS injectors with about 45 lbs of fuel pressure.
Burning Brakes
Joined: Aug 2000
Posts: 1,146
Likes: 2
From: Albuquerque NM
Re: Fuel injector size recommendations? (Dr. Doom)
It is ONLY dependent on HP (intake/head flow). If your going to keep the same head stick with the current ones, but keep the fuel pressure as is. This of course you're the first person on this forum not to have project creep and end up with a work in progress...like me!!!!!!!!!!!!
Team Owner
Joined: Sep 2001
Posts: 62,160
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Fuel injector size recommendations? (Dr. Doom)
Usually, you go with at least #30s on a 383.
I guess it would depend on whether your intake/heads are ported out and the cam youre running.
I guess it would depend on whether your intake/heads are ported out and the cam youre running.
Pro
Joined: Jul 2001
Posts: 557
Likes: 0
From: Taxahoma
Re: Fuel injector size recommendations? (vader86)
I think 36# injectors is overkill for a 383.
http://www.efi-tuning.org/forum/inde...ac3341f9198c30
and http://www.thirdgen.org/techbb2/show...5&pagenumber=1
The thirdgen post is very long, ski's is a 11 sec 406.
[Modified by Black87c4, 10:25 PM 5/11/2003]
http://www.efi-tuning.org/forum/inde...ac3341f9198c30
and http://www.thirdgen.org/techbb2/show...5&pagenumber=1
The thirdgen post is very long, ski's is a 11 sec 406.
[Modified by Black87c4, 10:25 PM 5/11/2003]
