Cross threaded spark plug

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Schurkey

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Worst starters I've ever installed were on Intercoursable 345/392 engines in school buses. The upper bolt is nearly impossible due to clearance problems with the frame rail. If there's a "special tool" for this, I don't know of it. If I did these more often, I'd invent the tool.

And, of course, those engines got the ignition timing checked by connecting the timing light to #8 instead of #1, which used to throw a lot of newbies.
 

0xDEADBEEF

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Worst set of plugs I ever did was my '99 Trans Am. I still remember that battle with #8.

I don't remember any terrible starter battles. Maybe I'm lucky. My LX470 the intake manifold has to come off to replace the starter. Brilliant. I haven't had to do it yet.
 

PlayingWithTBI

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AuroraGirl

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heres an ac delco(NGK) iridum, do not ever ever ever ever ever touch with a gapping tool or try to read its gap. 41-101 ac delco is the pn and they come at .060. your 4.3 has a plug that prob is like this but a diff number :)

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yours also set at .060 with a 41-993
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Otherwise the rapidfire and the copper here can be gapped

There is a double platinum that can be touched apparently.
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I wouldnt use it tho, I dont trust them, lol
 

HotWheelsBurban

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Damn laying on the burn for autolite today!
We sold AC, Champion, Autolite, and Motorcraft, had customers at the parts store that liked the different brands. I remember having plugs from all of them that occasionally came in damaged, had some with no threads on them. Parts warehouse people were notorious for dropping stuff too.
 
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