LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

24 or 30 lb injectors?

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Old Oct 21, 2007 | 12:35 PM
  #1  
Forklift's Avatar
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From: NOLA
24 or 30 lb injectors?

Right now Im running the mods in my sig and yesterday as I was trying to determine whats up with the engine I almost hydrolocked it and found out I have an injector thats stuck open. So now I need some new ones. I wanna end up running the hotcam setup in the next few months and have the heads done and this isnt my daily so it running rich till I get the computer redone isnt an issue. So what Im asking is, at what point do you need to make the jump to 30s
Old Oct 21, 2007 | 06:35 PM
  #2  
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Your mod list really doesnt show anything.That being said you probably will be fine with stockers.Or if you plan on making some decent power 30s are good.I recommend the SVO's.A tune is a must with bigger than stock.
Old Oct 21, 2007 | 07:43 PM
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sorry I forgot to check that. Its a 94 LT1 out of a Caprice
tb bypass
Vortech elbow
Granetelli MAF
PCM4Less tune
headman headers
no cats
40 series turned down at the rear
Huge K&N stright off the MAF off the elbow
2400 B&M stall
vette servos

I thought I had listed those and now remember the 500 number limit
Old Oct 21, 2007 | 07:43 PM
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Originally Posted by Forklift
Right now Im running the mods in my sig and yesterday as I was trying to determine whats up with the engine I almost hydrolocked it and found out I have an injector thats stuck open. So now I need some new ones. I wanna end up running the hotcam setup in the next few months and have the heads done and this isnt my daily so it running rich till I get the computer redone isnt an issue. So what Im asking is, at what point do you need to make the jump to 30s
First that is an issue, extra fuel will wash the cylinder walls.

For a hotcam car 30's should be good.

To determin exactly what size injector you need, just takes knowing the Flywheel HP of the engine and a little math, or using the fuel injector calculator on this very site.
Old Oct 22, 2007 | 10:40 AM
  #5  
Forklift's Avatar
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well what I meant was its not going to be run often. I have about a 3k budget to get this thing back up and going including paint and a few body parts I need. Ive already dropped too much in it with the Painless harness for the engine swap and the Painless harness for the flooded out stock wiring harness, frozen starter, frozen ac compressor I still need to replace (or dont, I want to convert it to do the airbags), and fuel pump/pickup that was all flooded and screwed in Katrina. I know most people would give up, but this has become an obsession and 7 yr project that I wanna finish and dont wanna look back and regret not doing it
Old Oct 22, 2007 | 04:06 PM
  #6  
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You will regret it if you put in larger injectors and don't program for it. You have the potential of running excessively rich, washing down the cylinder walls and diluting the oil. For what you have now, leave the stock injectors and stock tune in it. You are nowhere near the limits of the stock 24 #/HR injectors. Find one used injector to replace the one that isn't working.
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