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

What Injector Size?

Old Apr 5, 2004 | 05:16 PM
  #1  
Supermanx500's Avatar
Thread Starter
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Joined: Dec 2002
Posts: 116
From: Birmingham, Alabama
What Injector Size?

I went to the speed shop around where I live to start looking into what I need when i get some heads, and they told me that I need 38lb injectors and I was thinking that is a little big but what do I know. Here is my setup.


-383 stroker, XE 236/242, 1.6rr, Lt4 manifold, Valvetrain stuff, Midwest 3800TC, Every Bolton, Race Tranny, and more

The heads I am getting are....Either LE or Afr 220 w/Comp pkg.
(thinking about going with the GM847 cam when i put heads on) Not sure though

What Size Injectors should I be using?
thanks
Old Apr 5, 2004 | 09:21 PM
  #2  
kmook's Avatar
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Joined: Aug 2001
Posts: 2,262
From: Nashville
I'd get those or bigger for that combo.

I had around 400rwhp (stock bottom end, heads/cam) and was about 80% DC with 36#'ers.

So you should be making more power than that for sure, so I'd definately get at least 38's.

You can do calcs here:
http://www.rceng.com/technical.htm
Old Apr 6, 2004 | 06:16 AM
  #3  
IDOXLR8's Avatar
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Joined: Apr 1999
Posts: 2,784
From: Rochester Hills, MI
Re: What Injector Size?

Originally posted by Supermanx500
I went to the speed shop around where I live to start looking into what I need when i get some heads, and they told me that I need 38lb injectors and I was thinking that is a little big but what do I know. Here is my setup.


-383 stroker, XE 236/242, 1.6rr, Lt4 manifold, Valvetrain stuff, Midwest 3800TC, Every Bolton, Race Tranny, and more

The heads I am getting are....Either LE or Afr 220 w/Comp pkg.
(thinking about going with the GM847 cam when i put heads on) Not sure though

What Size Injectors should I be using?
thanks
Just remember when you decide to go with bigger injectors you will need a better fuel pump.
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