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Injector question

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Old Oct 19, 2025 | 11:31 AM
  #1  
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From: North VA
Car: 1988 Trans Am GTA
Engine: 350 TPI
Transmission: 700R4
Injector question

I had bought these 30# injectors from HolleyEFI for a 350 TPI, my question is, will these work? Just judging by the nozzle compared to the stock injectors, my guess is no. Holley on left, stock on right.



I had bought these because I saw that they had all of the injector data posted on their website that was perfect for input into TunerPro. So if they don't work, where can I find injectors similar to the stock style that have all of the injector data I need?

Thank you
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Old Oct 19, 2025 | 12:04 PM
  #2  
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Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Injector question

O-ring to o-ring appears the same. Clip position as well. Not seeing the issue
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Old Oct 19, 2025 | 12:52 PM
  #3  
BrznGTO's Avatar
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From: North VA
Car: 1988 Trans Am GTA
Engine: 350 TPI
Transmission: 700R4
Re: Injector question

Yes that's all the same. My concern is the length of the nozzle. As you can see on the new one, it ends right below the o-ring, where the stock one extends further down.
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Old Oct 19, 2025 | 12:57 PM
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Injector question

Gm used multec and Lucas same dimensions as the Accel and Holley
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Old Oct 19, 2025 | 01:04 PM
  #5  
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From: az
Car: 91 WS6 GTA
Engine: 5.3
Transmission: 4l60e
Re: Injector question

Originally Posted by BrznGTO
My concern is the length of the nozzle. .
thats not an issue
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Old Oct 19, 2025 | 07:45 PM
  #6  
BrznGTO's Avatar
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From: North VA
Car: 1988 Trans Am GTA
Engine: 350 TPI
Transmission: 700R4
Re: Injector question

Awesome that's good to know. Then I'm going to put these in the rails and put this car back together. Thank you all for the help!
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Old Oct 19, 2025 | 09:17 PM
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Re: Injector question

Originally Posted by BrznGTO
Awesome that's good to know. Then I'm going to put these in the rails and put this car back together. Thank you all for the help!
Just make sure to tune for them or the car will be running ridiculously rich.
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Old Oct 19, 2025 | 09:27 PM
  #8  
BrznGTO's Avatar
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From: North VA
Car: 1988 Trans Am GTA
Engine: 350 TPI
Transmission: 700R4
Re: Injector question

Yeah I will, thank you. I picked these because Holley's website has all of the injector data parameters that I see the L98 needs in TunerPro.
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