LS1 Injectors on a LT1

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Jul 17, 2004 | 12:51 PM

yellowlust

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Burning Brakes

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From: Portland OR

LS1 Injectors on a LT1

LT1s are 22lbs (?)

LS1s are ?

Is it worth doing or too rich?

Jul 17, 2004 | 04:04 PM

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Since the flow a bit more and opening/closing times are different the PCM values will need to be changed.

I'm running a set in my 95

Gordon

Jul 17, 2004 | 05:42 PM

Zix

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From: Phoenix AZ

Quote:

Originally Posted by yellowlust

LT1s are 22lbs (?)

LS1s are ?

Is it worth doing or too rich?

LS1 injectors are 28.8@52 if I remember right. They don't flow much more than the stock LT injectors with the stock fuel pressure of an LT1 car.

Jul 17, 2004 | 07:57 PM

yellowlust

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Burning Brakes

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From: Portland OR

If someone were to give me a set would they be worth using? Or would the cost of reprogramming the PCM outweigh the cost of refurbing mine? (~$100)

Jul 17, 2004 | 08:22 PM

Zix

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From: Phoenix AZ

Quote:

Originally Posted by yellowlust

If someone were to give me a set would they be worth using? Or would the cost of reprogramming the PCM outweigh the cost of refurbing mine? (~$100)

Well, you may need a reprogram as well as an adjustable fuel pressure regulator, I don't know what the LS injectors flow at the stock 40-42Lbs that an LT1 runs at. If they are clost to stock you might be able to get away with it. I know there are plenty of people that run them so it can't be that bad.

Jul 17, 2004 | 08:29 PM

tjwong

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From: Portland Oregon

Quote:

Originally Posted by yellowlust

If someone were to give me a set would they be worth using? Or would the cost of reprogramming the PCM outweigh the cost of refurbing mine? (~$100)

The LS1 injectors are rated at 28lbs/hr and at the fuel rail pressure of a 93/96 LT1/LT4 engine which is 43 PSI those same injectors would flow about 25lb/hr.

If you have a 94 and up LT1 the flow rate for your injectors are 24lb/hr, if you own a LT4 then those injectors are rated at appr. 28lb/hr, the earlier 92/93 LT1s had 22lb/hr inejectors.

At a cost of $99 from SLP those are a real good injectors if you need some. I see that you are in Portland Oregon, just as I am for a simple reflash and injector size change I would only charge you $50 if you bring the PCM to me

Total cost about $150 not including shipping on your new injectors. You can't buy two GM replacements from a dealer for that!