Tahoe #8 Spark Plug access

[Roger08LTZ]

I hope you read the recent thread about using a small dab of anti-seize on the threads of the spark plug before installing in the aluminum head.

I did not see that post. I really wanted to use Anti-seize, but I found so many people saying never use Anti-seize including reputable sources like AC Delco and Autoliite. Anyway the car has 190K miles on it and I just put in new AC Delco Iridium plugs and they will probably out live the engine. So hopefully this is the last time I'm touching these plugs.

 

[Joseph Garcia]

I did not see that post. I really wanted to use Anti-seize, but I found so many people saying never use Anti-seize including reputable sources like AC Delco and Autoliite. Anyway the car has 190K miles on it and I just put in new AC Delco Iridium plugs and they will probably out live the engine. So hopefully this is the last time I'm touching these plugs.

Another example of where our collective knowledge base can make life so much easier for folks when maintaining these trucks. This Forum ROCKS!

 

[Dustin Jackson]

I did not see that post. I really wanted to use Anti-seize, but I found so many people saying never use Anti-seize including reputable sources like AC Delco and Autoliite. Anyway the car has 190K miles on it and I just put in new AC Delco Iridium plugs and they will probably out live the engine. So hopefully this is the last time I'm touching these plugs.

@Roger08LTZ I thought my spark plugs would outlive my motor then 3 months later I had to pull my heads and spark plugs for a AFM-delete so don't jinx yourself lol

 

[mattbta]

1" extension makes quick work, too. Not nearly as hard as on my 4th gen f-bodies.

 

[donjetman]

What's the Manifold bridge? Something special about the 6.2?

They're called bridge clamps, or exhaust manifold clamps, for broken exhaust manifold bolts. Here's a thread with pics: https://www.tahoeyukonforum.com/thr...-cold-berryman-b12.120184/page-2#post-1469315

 

[OR VietVet]

I have some on mine

 

[slowride77]

Put the spark plug socket on the spark plug and then use a shallow socket and ratchet to slide over the hex end of the spark plug socket and get it from the top of the motor

This is the way. Did it this way on mine and took no more time than others on that side. I was totally surprised after reading the nightmare that was my future on #8. I climbed off the top of the engine bay and thought, wow, that wasnt bad at all.

I had a 1993 camaro with the gen1 LT1 engine in it and I had to have another person help and hand tools to my free hand from under the car. That sucked. This wasnt that bad.

 

[03X2]

I've found this car quite easy to work on compared to others I've worked on in the past, but the #8 plug is a challange. Makes me wounder how many people over the years have paid for 8 plugs and actually got only 7. Once I pulled the inner liner it wasen't that bad actually. I used a long 3/8" Extension with a universal joint. Perhaps the pictures attached might help someone?

WOW! You’re probably correct! That number 8 is probably the original in many of these. Thanks for the info.

 

[the_tool_man]

Old thread, I know. But I'm about to do mine and was reading up on everyone's method for #8. On the anti-seize, be sure to use the aluminum based kind, not the copper. I've read that the copper can cause galvanic corrosion of the aluminum heads. I don't know if that's really the case. But it makes sense.