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Injector size??????

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Old Aug 5, 2004 | 10:32 PM
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Question Injector size??????

i have been told that with the 125hp dry shot and the mods in my sig that my stock injectors are prolly close to maxed out...so if i need new injectors that is fine but i am not sure which ones to get. i was thinking 30lbers but was just wanting your opinion....also brands, and pricing would be helpful..thanks
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Old Aug 6, 2004 | 03:18 PM
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noone knows?????
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Old Aug 6, 2004 | 04:39 PM
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An LT1 with a 125 shot should not need more than a 32# or 34 # injector.
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Old Aug 7, 2004 | 12:40 AM
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We need more info on your mods. How much RWHP are you currently pushing with / without the 125 shot etc.

On my stock 28.8's I was at 93% duty cycle @ 6600 rpm with my cam and bolt on ls1. I had the stock injectors to 440 rwhp on a 125 shot when I was stock but I think they were pretty much maxed out at that.

I installed a set of 42.5 SVO's ( 51# at ls1 pressure ) and Im at 51% duty cycle at 472 RWHP on a 75 shot dry ( which is about near the limit of the stock pump )

Hope it helps.
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Old Aug 9, 2004 | 09:30 PM
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Originally Posted by JoeDirt
We need more info on your mods. How much RWHP are you currently pushing with / without the 125 shot etc.

On my stock 28.8's I was at 93% duty cycle @ 6600 rpm with my cam and bolt on ls1. I had the stock injectors to 440 rwhp on a 125 shot when I was stock but I think they were pretty much maxed out at that.

I installed a set of 42.5 SVO's ( 51# at ls1 pressure ) and Im at 51% duty cycle at 472 RWHP on a 75 shot dry ( which is about near the limit of the stock pump )

Hope it helps.
Honestl I have no idea what my RWHP i just got the H&C done and have not had a chance to have it dynoed....I am running stock heads and intake with hand P&P heads, port matched intake, along with a CC306 1.6rr, comp "R" lifters, guideplates, hardened PR and all the other usual mods....with PCMforless tuning....do you need any more info...the reall reason i was concerned is because this is a dry shot...not sure if that is what you were talking about in ref to yourself....
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Old Aug 9, 2004 | 10:06 PM
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Ahhh . . . I just noticed your an LT1 . . . Im not sure what your fuel injectors/ pump maxx out at compared to mine ?

Mine was a dry shot also fwiw. I would upgrade your injectors and fuel pump if you want to do the hole 125 shot. . . .or at minimum hop on a dyno and slowly up the shot to see how your fuel system holds up.
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Old Aug 10, 2004 | 11:44 AM
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Thanks...I appreciate the info...
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Old Aug 10, 2004 | 09:47 PM
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You should run at least 24# SVO injectors. THis is if you are running a NOS Dry kit. if you are running a wet kit you are just fine
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Old Aug 12, 2004 | 08:00 AM
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Originally Posted by TwoFast4Lv
You should run at least 24# SVO injectors. THis is if you are running a NOS Dry kit. if you are running a wet kit you are just fine
LT1's already have 24# injectors, stock. get the SVO or Venom 30#'s and you will be fine and not be too rich on normal street driving.
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