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

What size Injectors?

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Old Apr 27, 2003 | 11:50 PM
  #1  
formula383's Avatar
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From: Pikeville, KY USA
What size Injectors?

Do I need to change the injectors in my 94 Z28? It currently has the stockers in it.

I have the LT4 conversion with the HOT cam, LT's, and will be running a 150 WET shot.

So what size injectors do you think I need?
Old Apr 28, 2003 | 12:07 AM
  #2  
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Go with some 30# SVOs.
Old Apr 28, 2003 | 12:37 AM
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Thanks I was undecided about it. I didn't know if 24's would be enough or not.

Any more opinions?
Old Apr 28, 2003 | 10:04 AM
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What kind of HP do you think it is making? Hard to tell from your screen name, but is it a 350? 24's are OK to 400flywheelHP, and some people have pushed them higher, but I wouldn't. The N2O has nothing at all to do with the sizing, since its a wet shot. If you feel the injectors are marginal, I'd go up to the 30's and have the proper programming done. Alternatively, bumping the fuel pressure up a little would give you a some cushion on the 24's. Programming still required.
Old Apr 28, 2003 | 10:53 AM
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I haven't had the car dynoed or anything yet, but here is what I have right now.

Stock LT4 Heads, LT4 Intake, and HOT CAM, Jet Hot LT's, Mufflex Y-Pipe, Borla Cat Back, K&N CAI, NX Wet Kit

I will be doing more work down the road so should I just get the 30's anyway? The car should be 400 flywheel HP I would guess.

My screen name is formula383 because I had a 383 in my old formula, but I have since sold the formula and bought a Z28, so it is a 350
Old Apr 28, 2003 | 11:22 AM
  #6  
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Personally, I would just go with the 30's. I think most people push their luck with the 24's on really healthy motors..... . There is no downside to the 30's, other than cost.
Old Apr 28, 2003 | 10:41 PM
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OK, thanks, you have talked me into it, 30's it is.

Thanks

Bobby
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