LT1-LT4 Modifications 1993-97 Gen II Small Block V8

383 build..what injectors?

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Old 09-06-2011, 10:46 AM
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Default 383 build..what injectors?

I freshened up my 383 with new heads and ported intake and I'm wondering if my 30# injectors will be enough. If not, what's everyone running?
Old 09-06-2011, 10:52 AM
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How aggressive is the valvetrain, specifically the cam?
Old 09-06-2011, 10:58 AM
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230/236 .576/.575 113LSA I believe...The cam is a comp XFI grind and the valvetrain is all comp hardware
Old 09-06-2011, 11:03 AM
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30# is enough for my 383 with a similar cam
Old 09-06-2011, 11:12 AM
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Sweet! Hopefully I can get this beast started sometime this week since everything is back in and just needs hooked up. This is my first actual performance head swap and I'm curious as to what type of power it'll put down.
Old 09-06-2011, 12:30 PM
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Make sure you monitor your DC% once it's all set up. If your WOT DC% reaches 100% you're looking at upgrading to something like 36#s or 42#s. I think your 30#s should be enough though.
Old 09-06-2011, 12:47 PM
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I'm running 42# Ford greentops in my new setup with a similar cam.
Old 09-06-2011, 01:45 PM
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30's will probably work depending on what it actually makes for hp.........like joe said just monitor the DC% if it goes over 90 you are pushing your luck

my old 355 made about 500fwhp and it ran on 30's at about 87% DC......so you should be able to make around 525ish with them.........

my 385 maxed out a set of 48's.............like i said matters on the power it actually makes.....
Old 09-06-2011, 01:57 PM
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Originally Posted by quik95lt1
30's will probably work depending on what it actually makes for hp.........like joe said just monitor the DC% if it goes over 90 you are pushing your luck

my old 355 made about 500fwhp and it ran on 30's at about 87% DC......so you should be able to make around 525ish with them.........

my 385 maxed out a set of 48's.............like i said matters on the power it actually makes.....
What fuel pressure are you running? I know your motor is stout but 48 is a damn big injector for NA.

Hopefully my 42#s will be enough for my 383, with maybe a small bump in line pressure.
Old 09-06-2011, 02:44 PM
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Originally Posted by Puck
What fuel pressure are you running? I know your motor is stout but 48 is a damn big injector for NA.

Hopefully my 42#s will be enough for my 383, with maybe a small bump in line pressure.
i had the pressure turned up to 60 and was 100% DC at 7300rpm........that is with an oxygenated fuel though keep that in mind......

i went with a set of the low impedance 65's from FAST now.......so i can run a 10% oxygenated fuel and still have plenty of headroom at 43.5 PSI



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