What # injector,383 LS1
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From: Jefferson City, MO
What # injector,383 LS1 I have no clue where to start im putting a 383 LS1 in a 78 Z28,ported LS6 heads,608/596 lift cam,dur is 240/244,4000 stall, what lb and brand injector would be close with this setup ? NA setup
Last edited by 70ls1chevelle; Feb 7, 2010 at 02:23 PM.
I would grab somewhere around a 42# to 47# injector, maybe even 50# but I would consider that to be large.
are you staying naturally aspirated or plan on going with some boost?
how much HP is the 383 putting out? if you take your HP #'s and X's it by 0.070 you will get your injector size that you need to run,.. for example if i have a 400hp car i would do 400 x 0.070 = 28 so i would use 28lb injectors,just a little trick i was taught by a great engine builder, hope this helps
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From: Jefferson City, MO
he didn't say anything about going forced induction...those injectors you have would be FREAKING HUGE for him.
I would grab somewhere around a 42# to 47# injector, maybe even 50# but I would consider that to be large.
are you staying naturally aspirated or plan on going with some boost?
I would grab somewhere around a 42# to 47# injector, maybe even 50# but I would consider that to be large.
are you staying naturally aspirated or plan on going with some boost?
Its is gonna be N/A,plus some spray.I also have no idea what to expect on RWHP, the heads are ported a bunch with 2.02 valves,but its gonna have a ported weiand lingenfelter intake probably not gonna be enough air,vindicator cam . So no clue what hp should be NA ???
Thread Starter
Launching!
iTrader: (119)
Joined: May 2008
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From: Jefferson City, MO
how much HP is the 383 putting out? if you take your HP #'s and X's it by 0.070 you will get your injector size that you need to run,.. for example if i have a 400hp car i would do 400 x 0.070 = 28 so i would use 28lb injectors,just a little trick i was taught by a great engine builder, hope this helps
Flywheel HP or RWHP ??
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Verdad Gallardo how much HP is the 383 putting out? if you take your HP #'s and X's it by 0.070 you will get your injector size that you need to run,.. for example if i have a 400hp car i would do 400 x 0.070 = 28 so i would use 28lb injectors,just a little trick i was taught by a great engine builder, hope this helps
I would get some 42# or larger injectors honestly. Hell grab some 48# and be done with it.
Assuming a decent tune, and limiting the duty cycle to 85%, you can only reliably make 400 flywheel HP with a 28#/HR injector. It may sound conservative, but you don't want to push the duty cycle too high. My "rule-of-thumb" (normally aspirated) is multiply flywheel HP by 0.07 to get the minimum injector size. Example.... 500 flywheel HP x 0.07 = 35 #/HR.
