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L98 Vette Vs. T/A injectors?

Old 01-20-2019, 06:41 PM
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L98 Vette Vs. T/A injectors?






To begin Iíd like to thank you guys for helping this far, great feedback and suggestions have been putting me at ease.

Today in my project 91 Vette into an 89 T/A swap I managed to make more progress up until my injector/fuel rail swap. I am running a 91 L98 from a Vette and when I went to swap the fuel rails my injectors look terrible. My question is even though there is a difference in physical appearance, can I go ahead and use the Corvette injectors? Attached are photos being the Vette injector to the left and T/A to the right.
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Old 01-20-2019, 06:46 PM
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Re: L98 Vette Vs. T/A injectors?

Originally Posted by Jamcousi9 View Post





To begin Iíd like to thank you guys for helping this far, great feedback and suggestions have been putting me at ease.

Today in my project 91 Vette into an 89 T/A swap I managed to make more progress up until my injector/fuel rail swap. I am running a 91 L98 from a Vette and when I went to swap the fuel rails my injectors look terrible. My question is even though there is a difference in physical appearance, can I go ahead and use the Corvette injectors? Attached are photos being the Vette injector to the left and T/A to the right.
Any way you can get the number off the Vette injectors? Those look like LT1 injectors to me.
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Old 01-20-2019, 06:58 PM
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Re: L98 Vette Vs. T/A injectors?

They have 2473 lettered on them
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Old 01-20-2019, 07:24 PM
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Re: L98 Vette Vs. T/A injectors?

1989-1992 factory injectors all should look alike

they will have RP (Rochester Products) on their greenish gray bodies. Here’s a pic.




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Old 01-20-2019, 08:10 PM
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Re: L98 Vette Vs. T/A injectors?

Both L98's use the same size injectors and all the 88 to 92 factory injectors are complete and utter garbage. I wouldn't use either set personally.

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Old 01-20-2019, 08:55 PM
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Re: L98 Vette Vs. T/A injectors?

The one on the left is aftermarket.
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Old 01-20-2019, 08:59 PM
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Re: L98 Vette Vs. T/A injectors?

I just replaced mine w the Delphi 22lb ones from FIC

https://fuelinjectorconnection.com/c...l-injector-set



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Old 01-20-2019, 10:24 PM
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Re: L98 Vette Vs. T/A injectors?

Or support our vendor southbay, get a discount if you call them and say your from tgo.
https://www.southbayfuelinjectors.co...tors-1986-1992

It might be worth getting the ones on the left serviced
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Old 01-20-2019, 10:59 PM
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Re: L98 Vette Vs. T/A injectors?

Originally Posted by Tuned Performance View Post
Or support our vendor southbay, get a discount if you call them and say your from tgo.
https://www.southbayfuelinjectors.co...tors-1986-1992

It might be worth getting the ones on the left serviced
Thanks for all the replies.. I may add that the Vette only had 19k miles on it and the injectors are super clean. If you guys think theyíd work then Iíll just install them so I can keep moving on the project
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Old 01-20-2019, 11:01 PM
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Re: L98 Vette Vs. T/A injectors?

Iím not planning on doing any performance upgrades on the engine so I donít need a hot set. If they are compatible I donít mind having stock ones
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Old 01-20-2019, 11:11 PM
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Re: L98 Vette Vs. T/A injectors?

The stock injectors are crap. Age is the problem not mileage. They can easily run lean and fry a cylinder. It's not worth the risk. The engine deserves new injectors. It has nothing to with performance upgrades - which you can't change the injector size without reprogramming the ECU anyway so you need stock sized replacement injectors.

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Old 01-21-2019, 07:28 AM
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Re: L98 Vette Vs. T/A injectors?

Originally Posted by Jamcousi9 View Post
Iím not planning on doing any performance upgrades on the engine so I donít need a hot set. If they are compatible I donít mind having stock ones

The reason I replaced my injectors wasnít for Performance, but because the factory injectors fail.

iíve now replaced them on 3 L98 Cars. One had 5k mi. But was over 23 years old.
Time.

The place I got my injectors also gave a discount, as their website generally has discount codes every other month. In the process, I replaced the regulator diaphragm and all of the O-rings in the fuel rail as well. I hope this helps
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Old 01-21-2019, 08:43 AM
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Re: L98 Vette Vs. T/A injectors?

Multecs will fail eventually. Sooner rather than later.
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Old 01-21-2019, 12:03 PM
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Re: L98 Vette Vs. T/A injectors?




There are three styles of injector in the first photo.

Red = Multec (finicky due to production problems back in the day)
Blue = Aftermarket replacement (not original equipment)
Yellow = Rochester pintle style (finicky due to being old as hell, and probably long since plugged up and potentially worn out)

All three styles should really just go in the garbage. In the long run injectors are cheap. A good matched set of injectors can save a lot of headaches.
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Old 01-24-2019, 01:34 PM
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Re: L98 Vette Vs. T/A injectors?

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