LT1-LT4 Modifications 1993-97 Gen II Small Block V8

RTV for intake manifold?

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Old Jul 27, 2008 | 03:59 PM
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Default RTV for intake manifold?

so i just want to get confirmation from someone on here that the blue "sensor safe" RTV is ok for sealing the intake.
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Old Jul 27, 2008 | 04:00 PM
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I never tried the blue. i used the copper high temp RTV.
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Old Jul 27, 2008 | 04:02 PM
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try this stuff called the "The right stuff".... My buddy turned me onto it, It is the **** but cost like $20 a can. Worked on my intake perfect
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Old Jul 27, 2008 | 04:14 PM
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ya i heard about that "the right stuff" i thought i remember someone on here saying to use the sensor safe something about it will mess up o2's. maybe?

can you get "the right stuff" from orielys or napa?
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Old Jul 27, 2008 | 05:16 PM
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Originally Posted by MadMike 97 Z28
so i just want to get confirmation from someone on here that the blue "sensor safe" RTV is ok for sealing the intake.
I used the Blue and had no problems..I used it pretty much everywhere I had to on my LT1.
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Old Jul 27, 2008 | 06:48 PM
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Originally Posted by Lt1junkie
try this stuff called the "The right stuff".... My buddy turned me onto it, It is the **** but cost like $20 a can. Worked on my intake perfect
Hands-down, the best stuff that you can use on your intake.
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Old Jul 27, 2008 | 06:51 PM
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Originally Posted by MadMike 97 Z28
ya i heard about that "the right stuff" i thought i remember someone on here saying to use the sensor safe something about it will mess up o2's. maybe?

can you get "the right stuff" from orielys or napa?
I would believe napa would have it.. Not to sure about oriley's we don;t have those here in VA
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Old Jul 27, 2008 | 08:59 PM
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use the Right Stuff or Ultra Copper. Use a nice thick bead. There is no concern for ruining any sensors using RTV on the intake.
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Old Jul 27, 2008 | 11:05 PM
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Permatex Ultra Copper!!!! at least for me!
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Old Jul 27, 2008 | 11:48 PM
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^^How's your foot doin bro..
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Old Jul 28, 2008 | 01:51 PM
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ended up picking up a can of "the right stuff" since i was on a parts run anyways. thanks for the suggestions guys.
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Old Jul 30, 2008 | 01:37 PM
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Originally Posted by taner
Permatex Ultra Copper!!!! at least for me!
Ditto
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Old Jul 30, 2008 | 06:38 PM
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Originally Posted by MadMike 97 Z28
ended up picking up a can of "the right stuff" since i was on a parts run anyways. thanks for the suggestions guys.

Make sure it's fresh!!!


A couple of years ago, the last time I did my intake gaskets, I picked up a tube of this stuff, as it's supposed to be the "kat's ***" for the intake manifold. Get everything ready to go, snip off the tip of the tube....NOTHING! The stuff is all set up!!

Take it back to the parts store, they apologize, give me another tube, but this time check the exp. date. before I leave. The second tube was NG also! I guess because of the price, not too many people buy the stuff, so it sits on the shelf for a while...





(700th post !!!!!)
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Old Jul 30, 2008 | 07:17 PM
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yep it was good already installed it and finished the car https://ls1tech.com/forums/lt1-lt4-modifications/962577-first-start-gm847.html
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