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

Gonna get larger injectors, what else do i need?

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Old Sep 9, 2004 | 10:07 PM
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vin1382's Avatar
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Gonna get larger injectors, what else do i need?

I plan on going a supercharger route, and in that case, I plan on upgrading to larger injectors, probably 36# injectors.

Does anything else need to be changed in order for these injectors to work? Is the stock fuel pump up for the job? Or should I get a better one? anything else i need to know about as a consequence of upgrading the injectors?
Old Sep 9, 2004 | 10:45 PM
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Re: Gonna get larger injectors, what else do i need?

Originally Posted by vin1382
I plan on going a supercharger route, and in that case, I plan on upgrading to larger injectors, probably 36# injectors.

Does anything else need to be changed in order for these injectors to work? Is the stock fuel pump up for the job? Or should I get a better one? anything else i need to know about as a consequence of upgrading the injectors?
You don't give much information. If you had a power goal you might get better suggestions. If 36 lb/hr injectors are big enough for your goals than the fuel lines and pump are also up to the task if you keep at stock fuel pressures.

The only other thing you need for a fuel injector swap is the appropriate PCM changes. The fuel injector constant and offsets need to be changed. You can mail order this or do it yourself with the appropriate hardware/software.

I would change the fuel filter while you're at it though.
Old Sep 9, 2004 | 11:33 PM
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vin1382's Avatar
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Re: Gonna get larger injectors, what else do i need?

Originally Posted by Buttercup
You don't give much information. If you had a power goal you might get better suggestions. If 36 lb/hr injectors are big enough for your goals than the fuel lines and pump are also up to the task if you keep at stock fuel pressures.

The only other thing you need for a fuel injector swap is the appropriate PCM changes. The fuel injector constant and offsets need to be changed. You can mail order this or do it yourself with the appropriate hardware/software.

I would change the fuel filter while you're at it though.
well i only plan to run moderate boost, 6 to begin with, and at most 8-10 in the future. i have read that 36# injectors would be sufficient for the fuel requirement of that setup. im aiming for a setup of about 400-420 at the wheels. ok, the computer is what i had heard also, i just didnt know if the stock fuel pump woudl be able to handle the extra load, and what other components along the way might need to be bigger so it wasn't choking the system, etc.

better? . So does it sound like I will have to upgrade anything other than the injectors, PCM(i have a 93), and the filter while i am at it?
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