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What injectors to run?

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Old 06-24-2008, 07:05 PM
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Default What injectors to run?

I'm starting to build up parts but need to know what injectors I will likely need to run so I can keep an eye out for some.

'03 LS1
FAST 92 Intake
FAST 92mm TB or LS2 90mm if I go DBW
TS LS6 stage 1 heads (should be what i'm going with)
MS3 or MS4 cam specs...(NOT the MS specifically but somewhere around those specs)

Will be NA

Should I be looking at a 36# injector?

Thanks
Old 06-24-2008, 07:51 PM
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Ford SVO 30 lbers will do nicely. They flow like 36 or 37 lbs on LS1s. But 36 lbs is the general ball park for those mods. You'll max out ~ 83% on the duty cycle.
Old 06-24-2008, 08:15 PM
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how much power do you plan on making?? if you can get the 92mm stuff cheaper than the 90mm stuff go for it......but unless you are going to be making some sick 900HP+ there is no need for 92mm

grab you some 37# or 42# racetronix injectors, you won't regret it. thats what i'm running, no problems at all
Old 06-24-2008, 08:16 PM
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Originally Posted by SweeTbone
Ford SVO 30 lbers will do nicely. They flow like 36 or 37 lbs on LS1s. But 36 lbs is the general ball park for those mods. You'll max out ~ 83% on the duty cycle.

Damnit, I passed up a few good deals on those because I wasn't sure.
Old 06-24-2008, 08:27 PM
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Originally Posted by ZL1Killa
how much power do you plan on making?? if you can get the 92mm stuff cheaper than the 90mm stuff go for it......but unless you are going to be making some sick 900HP+ there is no need for 92mm

grab you some 37# or 42# racetronix injectors, you won't regret it. thats what i'm running, no problems at all
I already bought a FAST 92 intake

I asked around on here but didn't get much feedback at all.

Oh well. It's a bitch not knowing anyone with an LSX because I am lost on all of this stuff.
Old 06-25-2008, 10:42 AM
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Originally Posted by ZL1Killa
how much power do you plan on making?? if you can get the 92mm stuff cheaper than the 90mm stuff go for it......but unless you are going to be making some sick 900HP+ there is no need for 92mm

grab you some 37# or 42# racetronix injectors, you won't regret it. thats what i'm running, no problems at all

I would like to put down around 450rwhp when everything is said and done.
Old 06-25-2008, 10:50 AM
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You can get a FAST 36 lb. injector for $300. With the LS1 fuel pressure it will act a little bigger.
Old 06-25-2008, 11:06 AM
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Racetronix injectors here. I have the 37#, which are like a 43.5# or somewhere there abouts on our fuel system. Just remember you will have to have a tune for them. Good luck!
Old 06-25-2008, 11:20 AM
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Originally Posted by AustinYukon
I would like to put down around 450rwhp when everything is said and done.
yeh...well at least you got the parts that you know will handle it.




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