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

LE2 guys (Injectors and Compression)

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Old Apr 26, 2006 | 11:42 AM
  #1  
TireMarx723's Avatar
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LE2 guys (Injectors and Compression)

Stock short block, LE2 heads/cam

What injector size? Lloyd recommends delphi
but If for some reason i decide to refresh my engine sometime I will go to a 383 LE2, but in the mean time ill drive it until it stops on the stock short block. What injector size would satisfy my possible future upgrade without hurting it now? 38lbs?

Also with the LE2's what will my new compression ratio be?
Old Apr 26, 2006 | 12:02 PM
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Re: LE2 guys (Injectors and Compression)

Compression on the 350 or the 383?

The 38's will work.

Bret
Old Apr 26, 2006 | 12:08 PM
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Re: LE2 guys (Injectors and Compression)

From Lloyd:

"A stock bottom end 350 with my LE2 heads and cam will be right at 11.1 to 11.2 to 1 with the .026 Mr Gasket # 5716 head gaskets."
Old Apr 26, 2006 | 12:19 PM
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Re: LE2 guys (Injectors and Compression)

Thanks guys
Old Apr 26, 2006 | 12:25 PM
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Re: LE2 guys (Injectors and Compression)

Racetronix no longer sells #38's but I bought #37's for my 383, the cam is a one off bret cam and as per my tuner who will be doing it, something in the mid 30's would be perfect, no need to change fuel pressure and over work the injector
Old Apr 26, 2006 | 02:10 PM
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Re: LE2 guys (Injectors and Compression)

I don't have a stock bottom end so I can't comment on the compression part but I do use racetronix 38lb injectors for my LE3 383 and they're fine.
Old Apr 26, 2006 | 07:19 PM
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Re: LE2 guys (Injectors and Compression)

Lloyd told me to get the Delphi 37 lb/hr injectors for mine.
Old Apr 26, 2006 | 08:27 PM
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Re: LE2 guys (Injectors and Compression)

I use the .029 Impala head gaskets on my 355. 11.0 to 1 compression and 30lb SVO's with LE2 heads and CC503.
HVY SS
Old Apr 26, 2006 | 08:33 PM
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Re: LE2 guys (Injectors and Compression)

I am running 37# Delphi injectors on my LE heads and Brett Bauer cam. I am running 11.8:1 on 93 octane. My quench is nice and tight at .039 using the Mr. Gasket 5716. I have Datamaster and it shows no spark retard at all. The thing pulls like a **** and it runs a bit rich. It will puff a little black smoke when I floor it, but the 37# will handle your goals fine.

Last edited by 94zgreenmachine; Apr 26, 2006 at 08:36 PM.
Old May 22, 2006 | 04:53 PM
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Re: LE2 guys (Injectors and Compression)

Originally Posted by hvyss
I use the .029 Impala head gaskets on my 355. 11.0 to 1 compression and 30lb SVO's with LE2 heads and CC503.
HVY SS
Forgive my ignorance, are those thinner or thicker than stock gaskets?

I thought they were thinner, but based on the comments above, it would seem that they lower compression (thicker?)
Old May 22, 2006 | 05:03 PM
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Re: LE2 guys (Injectors and Compression)

Originally Posted by James Montigny
Forgive my ignorance, are those thinner or thicker than stock gaskets?

I thought they were thinner, but based on the comments above, it would seem that they lower compression (thicker?)
No they are thinner than stock.. Stock is .050 something i think.. Can't remember off hand.
Old May 22, 2006 | 05:15 PM
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Re: LE2 guys (Injectors and Compression)

Hmmm.. ok, maybe I was thinking LT1 had higher CRs stock. It's been a long time.

as long as they don't cause valve/piston issues, I'd like to try that on my LE install.

Been hunting for something like for a while now.

Last edited by user 647483; May 31, 2006 at 10:19 AM.
Old May 22, 2006 | 09:41 PM
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Re: LE2 guys (Injectors and Compression)

Try the Mr.Gasket head gaskets. The number is 5716 and should come in at $33 for the pair from summit. The thickness is .026. They will bump your compression up. The fel-pro 1074 should come in at about .039 but are about $70 for the pair.
Old May 31, 2006 | 10:19 AM
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Re: LE2 guys (Injectors and Compression)

Originally Posted by 94zgreenmachine
Try the Mr.Gasket head gaskets. The number is 5716 and should come in at $33 for the pair from summit. The thickness is .026. They will bump your compression up.
Just ordered em, Thanks
Old May 31, 2006 | 06:45 PM
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Re: LE2 guys (Injectors and Compression)

Originally Posted by James Montigny
Just ordered em, Thanks
Just make sure that you stick them in the freezer for an hour or so before opening. I didn't and some of the gasket surface came off with the plastic wrapping. Needless to say, I wasn't very pleased. This was the way to prevent this. Good luck!



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