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

Changing spark plugs in LT1

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Old Oct 15, 2005 | 01:51 PM
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Default Changing spark plugs in LT1

I haven't own my 92 vert but for a few months but I would like to try and change the plugs in it myself. Looking at the motor I can barely see some of the plugs and the ones in the back look impossible to get to. Need some advice on what components to remove to make this as easy as possible. I ordered the NGK plugs as I have seen many members recommend them. Have also seen horror stories about cross-threading the ones in the back of the heads. Someone please qualm my fears about this. I have changed plugs in alot of vehicles but this one looks like trouble.
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Old Oct 15, 2005 | 02:04 PM
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The pass side is a piece of cake. On the drivers side remove the center and rear inner fender panels. (total of about 12-10mm bolts). That will open it all up.
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Old Oct 15, 2005 | 07:40 PM
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Sliding the ASR unit out of the way helps too. Don't disconnect it, just take out the bracket bolts and move it out of the way. The plugs aren't too bad, the plug wires are a bit more challenging.

Use the advanced search for a lot more tips and tricks for doing either.
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Old Oct 15, 2005 | 07:59 PM
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I removed the front fender wells around the wheels when I replaced mine. Gave me a little more wiggle room. Don't forget the anti-seize compound.

Good choice with the NGK TR-55 platinums plugs. That's what I run in mine.
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Old Oct 16, 2005 | 06:53 PM
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Thanks for all your tips. I think now I have a better handle on this.
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