C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

90-91 L98 intake manifold question

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Old Mar 19, 2004 | 01:47 PM
  #1  
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Default 90-91 L98 intake manifold question

While I was checking the OHM values on my fuel injectors I noticed something weird on my intake manifold that I need some help with. On the passenger side, counting manifold bolts from the back toward the front, immediately beside the 4th manifold bolt (toward the front) is what appears to be an opening for a bolt/screw. It's threaded inside the opening, but there's nothing threaded into it on mine!!!!! If anyone with a 90-91 L98 can look at theirs when they get a chance and let me know what is (or is not) in this opening I'd appreciate it. Thanks
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Old Mar 19, 2004 | 03:22 PM
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Default Re: 90-91 L98 intake manifold question (Red90Coupe)

I've got the same empty hole there. I don't know what went there. I'd have to check my service manual at home. Maybe the parts & illustration will help too. If I remember I'll check that one too.

:confused:
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Old Mar 19, 2004 | 08:03 PM
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Default Re: 90-91 L98 intake manifold question (Red90Coupe)

My 89 engine has the same "vacant" hole between the 4th and 5th manifold bolts (counting from the rear on the passenger side). Looks like an alternate hole to attach the fuel injector wiring harness.....I guess?? I had not noticed this.....shame on me!
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Old Mar 19, 2004 | 10:46 PM
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Default Re: 90-91 L98 intake manifold question (Red90Coupe)

Thanks for looking for me. :cheers: Guess it's normal. Had me a little concerned. :D
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Old Mar 20, 2004 | 10:22 PM
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Default Re: 90-91 L98 intake manifold question (Red90Coupe)

Might be for an F body bracket.
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