OEM Fuel Injector Differences

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Aug 16, 2018 | 10:10 PM

Chris Draper

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From: Gilbert, Arizona Currently Own: 1998 Coupe YouTube: My Corvette Life

OEM Fuel Injector Differences

What is the difference between the LS1 (#12554271) and LS6 (#12561462) fuel injectors?

Aug 17, 2018 | 01:11 AM

My Vette Life

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Quote:

Originally Posted by Chris Draper

What is the difference between the LS1 (#12554271) and LS6 (#12561462) fuel injectors?

those are identical but the 99-00 spec specs are slightly different.

Aug 17, 2018 | 09:28 AM

feeder82

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Ls1 26# LS6 28# flow

Aug 17, 2018 | 12:33 PM

Bill Curlee

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From: Anthony TX

CI 6,7,8,9,11 Vet

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Quote:

Originally Posted by feeder82

Ls1 26# LS6 28# flow

100% Both injectors are identical fit and wire harness connector wise.

NOTE! ANY TIME you change injectors on an LS engine, you MUST go into the PCM and change (TUNE) the injector flow rate tables for the engine to function properly. You would need, LS- Edit EFI Live or HP-Tuners ect.. to do that.

Bill

Bill

Aug 20, 2018 | 01:26 AM

Chris Draper

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From: Gilbert, Arizona Currently Own: 1998 Coupe YouTube: My Corvette Life

1997-98 ls1 part number 12554271 , 24.7 @ 3 bar & 28.5 @ 4 bar
1999-00 ls1 part number 12555894 , 22.3 @ 3 bar & 26.3 @ 4 bar
2001-03 ls1/6 part number 12561462 , 24.7 @ 3 bar & 28.5 @ 4 bar

Aug 20, 2018 | 07:29 AM

chris308

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My guess would be they just reissued a new part number when they went back to them in 2001.

Mar 31, 2021 | 02:19 PM

CorvetteSF

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Injector Specs

Quote:

Originally Posted by Chris Draper

1997-98 ls1 part number 12554271 , 24.7 @ 3 bar & 28.5 @ 4 bar
1999-00 ls1 part number 12555894 , 22.3 @ 3 bar & 26.3 @ 4 bar
2001-03 ls1/6 part number 12561462 , 24.7 @ 3 bar & 28.5 @ 4 bar

Thanks Fellas Iv'e been looking for this information to input into new Holley Terminator PCM, I just installed. Will update ya'll how it went. By the Way Chris, i like your youtube channel! your a cool Cat!