Performance Injectors
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3rd Gear
Joined: Oct 2005
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Performance Injectors
I'm building a '94 LT1 Turbo engine, What are the best injectors around? What are the best priced injectors and still get me buy. The LT1 has ported heads 1.6 RR, 8.5 Compression, Stroked to 383, and forged everything. I want to get the best performance out of it but still be streetable.
Supporting Vendor
Joined: Dec 2001
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From: A dealer near you.
Sounds like the Siemens 3172's or Siemens L107's would be in order here. Stay away from the Delphi 17113738's as they do not tune easily with the LT1 & LS1 PCM's.
Both the 3172's and L107's are in stock in flow-matched sets.
Both the 3172's and L107's are in stock in flow-matched sets.
Pro
Joined: Dec 2002
Posts: 704
Likes: 16
From: Dallas Texas
Originally Posted by Racetronix
Sounds like the Siemens 3172's or Siemens L107's would be in order here. Stay away from the Delphi 17113738's as they do not tune easily with the LT1 & LS1 PCM's.
Both the 3172's and L107's are in stock in flow-matched sets.
Both the 3172's and L107's are in stock in flow-matched sets.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by Racetronix
Sounds like the Siemens 3172's or Siemens L107's would be in order here. Stay away from the Delphi 17113738's as they do not tune easily with the LT1 & LS1 PCM's.
Both the 3172's and L107's are in stock in flow-matched sets.
Both the 3172's and L107's are in stock in flow-matched sets.
Supporting Vendor
Joined: Dec 2001
Posts: 1,573
Likes: 31
From: A dealer near you.
Originally Posted by Brand-X
Do you guys make a fuel system for the LT1 vette that can support 1k hp?
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From: A dealer near you.
Originally Posted by tjwong
Why are the Delphi/Multec 3738 injectors hard to tune? Are there some inherent problems with fuel metering at low engine loads and or low engine speeds?
Supporting Vendor
Joined: Dec 2001
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Originally Posted by Baldturbofreak
Are the L107's E85 compatible? Do they come in shorty's?
"They are rated for 85% methanol and people have used them with 100% methanol with no problems."
Standard 20% ethanol for gasohol is OK too.
Shorty's are listed here: http://www.racetronix.com/S107FM.html
Intermediate
Joined: Oct 2005
Posts: 25
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From: Benton Ar
bran of turbo?
Originally Posted by 949C1
I'm building a '94 LT1 Turbo engine, What are the best injectors around? What are the best priced injectors and still get me buy. The LT1 has ported heads 1.6 RR, 8.5 Compression, Stroked to 383, and forged everything. I want to get the best performance out of it but still be streetable.
Drifting
Joined: Nov 2003
Posts: 1,637
Likes: 2
From: Honeoye Ny
Originally Posted by Racetronix
The 17113738 is a very slow/ lazy injector plus the electromagnetic properties of the coil in combination with some ECM/PCM drivers cause erratic fueling. These injectors seem to work very well with GN's, Sy's Ty's, L98, Mustangs etc. Based on feedback from our dealers and customers most people are not able to obtain good results with them. That is not to say that it can not be done as we do have some customers running them in LT1 and LS1 cars but they are few. The Siemens 3172 and L107 are much easier to tune for most people.
Melting Slicks
Joined: Mar 1999
Posts: 2,535
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From: Rochester NY
Originally Posted by Baldturbofreak
That is the first I have heard of that phenomenon, I wonder If that explains some of bruce's woes. Those are his exact injectors (17113738 ) Very inconsistent fueling.
This is maybe true with the 50s . But we won't have that problem with the GEN 7 ECU to drive the big Delphi 96s I got now.
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Originally Posted by Bruce
This is maybe true with the 50s . But we won't have that problem with the GEN 7 ECU to drive the big Delphi 96s I got now.
This only applies to P/N 17113738
