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What size injectors........

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Old Jan 25, 2007 | 11:26 PM
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Default What size injectors........

Here is a list of my mods, what size injectors would you all suggest (and what company) with my mods? Also, thinking about getting a F.A.S.T. intake manifold, 80-90mm throttle body:

MODS:
3.42 gears,
LS6/Z06 Heads,
LG Long Tubes,
Century Stage II auto trans.,
Yank SS 3600,
Z06 Titanium exhaust w/ x-pipe,
MTI Stealth Cam,
Jesel SS shaft mounted rockers w/ Crane Dual Springs,
VaraRam,
HiFlow Cats
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Old Jan 25, 2007 | 11:48 PM
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Your stock injectors will be ok, just make sure that your wot AFR is at 13.0 and the injector duty cycle is under 100% at wot.
My stock injectors are at 87% duty cycle @ 7000 rpm.

My car made 404 rwhp with a 234/228/.573 camshaft & headers. Stock heads, intake manifold and mufflers.

Russ Kemp
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Old Jan 25, 2007 | 11:49 PM
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The stock injectors are probably fine and if not, a set of Ford SVO 30lbers (flow like 36lbers on a C5) would do the trick at about $250.
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Old Jan 26, 2007 | 12:17 AM
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Originally Posted by JameyTurner
Here is a list of my mods, what size injectors would you all suggest (and what company) with my mods? Also, thinking about getting a F.A.S.T. intake manifold, 80-90mm throttle body:

MODS:
3.42 gears,
LS6/Z06 Heads,
LG Long Tubes,
Century Stage II auto trans.,
Yank SS 3600,
Z06 Titanium exhaust w/ x-pipe,
MTI Stealth Cam,
Jesel SS shaft mounted rockers w/ Crane Dual Springs,
VaraRam,
HiFlow Cats

SVO 30lb injectors should work nicely.

Hammer
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Old Jan 26, 2007 | 12:31 AM
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Could you put those injectors on a car with fewer mods also???
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Old Jan 29, 2007 | 12:37 AM
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What would be the downside to getting something like 42lb injectors now in case I do future mods?
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Old Jan 29, 2007 | 01:28 AM
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Very similar mods..also interested.
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Old Jan 29, 2007 | 10:47 AM
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ttt
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Old Feb 4, 2007 | 11:50 PM
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Originally Posted by JameyTurner
What would be the downside to getting something like 42lb injectors now in case I do future mods?
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Old Feb 5, 2007 | 12:47 PM
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See thread in tech section about injector size. Formula is given.
Downside of 42's when not needed will be poor fuel mileage.
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Old Feb 5, 2007 | 02:47 PM
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Stock injectors are just fine for those mods.

Keith
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Old Feb 5, 2007 | 04:27 PM
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Originally Posted by JameyTurner
Originally Posted by JameyTurner
What would be the downside to getting something like 42lb injectors now in case I do future mods?

If you go bigger than 42s, you might have a tough time getting it to idle properly. If you look at the injector calculator, you could plan it out for future mods... don't forget, those injectors are usually rated at 43psi, not our 58.. so a 30 injector is 36 lb.

http://www.rceng.com/technical.htm
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Old Feb 6, 2007 | 11:20 AM
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So my best bet will be Bosch 30 lbers? Only mods I have planned right now is the FAST intake manifold and 90mm throttle body and new mass air flow sensor....
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