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01-16-2012, 03:02 PM
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#1
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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Injector size?
I'm trying to figure out what injector sizes would be good for my build and which way to go.
Here is the basics
226/234
226 ai 243's
Full Bolt ons
Ported fast 102/102
ractronix fuel pump kit
That is for now but If I ever go through the short block it's getting a medium dry shot and I don't want to buy things more than once. Thanks guys.
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1984 Firebird
2000 Z28
2023 Tacoma
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01-16-2012, 03:13 PM
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#2
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,938
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Dry shots are lame.
42# green top SVOs
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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01-16-2012, 04:14 PM
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#3
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Stalker
Join Date: Aug 2004
Posts: 12,080
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When buying injectors, keep in mind at which Fuel Pressure PSI they are rated at.
Theres lt1 FP and LS1 FP which are different.(43.5psi /58psi)
...so an injector that is rated at say.. 30lb/hr at 43.5psi is equal to 34.64lb/hr at 58 psi
I had Racetronix 37# ones (43.5psi rated) and they worked out to about 42#@58psi in my old LS6 with a big cam and almost all bolt ons, and my duty cycle on them were fine.
Last edited by V; 01-16-2012 at 04:16 PM.
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01-16-2012, 07:23 PM
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#4
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Join Date: Jul 2009
Location: barnegat nj
Posts: 1,340
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42-46 rated will do you fine. I would go with 46's to have the fuel for future mods above what your list is.
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Quote:
Originally Posted by SRGN
I never pulled into the staging beams at the track and saw a dyno in the other lane.
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South Jersey Racecraft
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01-16-2012, 08:26 PM
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#5
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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So does anyone know where I can get the best deal?
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1984 Firebird
2000 Z28
2023 Tacoma
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01-16-2012, 08:34 PM
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#6
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11 Second Club
Join Date: Feb 2008
Location: Edison, NJ
Posts: 4,620
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Have the stockers resized. . .
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1999 Z28 Convertible. 6 speed swap, wide cowl hood, full hockey stripes, and a whining 10 bolt.
2008 Sierra Vortec Max. 6.2 swapped, headers, Magnaflow catback, GMPP CAI, NHT optioned tow package.
2006 GTO, 11.48 @ 118.3
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01-16-2012, 09:47 PM
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#7
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10 Second Club
Join Date: Feb 2008
Location: Eatontown
Posts: 1,647
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Get the FAST 36lb/hr injectors, they are thin body and 42lb/hr at ls1 fuel pressure. You will need thin body injectors to fit onto a FAST 102 intake.
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1999 C5 FRC: 12.7@114
2008 TBSS: 12.48@108
2017 Silverado 2500 do you even lift breh?
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01-17-2012, 12:42 AM
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#8
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Join Date: Jul 2009
Location: barnegat nj
Posts: 1,340
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seimens injectors for aftermarket, they will be the cheapest & most reliable. Make sure you purchase with correct connector.
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Quote:
Originally Posted by SRGN
I never pulled into the staging beams at the track and saw a dyno in the other lane.
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South Jersey Racecraft
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01-17-2012, 05:28 AM
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#9
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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I forgot about fuel rails, are their other options then the ones by fast? Thanks guys.
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1984 Firebird
2000 Z28
2023 Tacoma
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01-17-2012, 04:36 PM
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#10
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Stalker
Join Date: Aug 2004
Posts: 12,080
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for that hp range i think youll be ok with the stock rails.
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01-17-2012, 04:51 PM
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#11
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Join Date: Feb 2005
Location: Orange County NY
Posts: 579
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Quote:
Originally Posted by NJ Torque
Have the stockers resized. . .
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There junk ive done back to back dyno testing....
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2000 Camaro 25.5 Turbo car  X275
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01-17-2012, 04:54 PM
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#12
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Join Date: Feb 2005
Location: Orange County NY
Posts: 579
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I would do a set of 42lbs there around 48 @ 58psi gives you room to grow. Don't waste your time on a dry shot.
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2000 Camaro 25.5 Turbo car X275
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02-06-2012, 12:26 PM
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#14
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,368
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The first two are for cars that make a little bit of power. You can run stock injectors forever, you just can't go WOT. You would have to be retuned when you get new injectors.
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02-06-2012, 01:19 PM
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#15
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Join Date: Nov 2005
Location: Edison
Posts: 7,856
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Yeah..I figured they would be big.. I just sent them an email asking for a recommendation..
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1984 Firebird
2000 Z28
2023 Tacoma
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