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

1991 Plenum

   
Old Dec 27, 2017 | 04:36 PM
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Default 1991 Plenum
Hi all, I'm wanting to remove my plenum and plenum runners on my 91 to paint them. I recall trying to remove the runner bolts a few years ago and I could not get them to budge so I gave up.

I'm wanting to know if anyone has any suggestions for getting these bolts out or am I asking for more trouble than it's work just to paint the runners?

Thanks.
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Old Dec 27, 2017 | 06:39 PM
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Heat the aluminum around where the stuck bolts is threaded into. Heat it. Use heat. Heat will work. Heat.


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Last edited by Tom400CFI; Dec 27, 2017 at 06:40 PM.
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Old Dec 27, 2017 | 09:01 PM
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I would try an impact driver. Use a good fitting bit and it should get them out with a few hits.

Something like this.
Amazon Amazon
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Old Dec 28, 2017 | 08:13 AM
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Ok, thanks. I'll probably just wait until it's time to rebuild the engine.
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