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changed plugs

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Old 02-01-2015, 06:05 PM
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Car: 88 GTA Notchback
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: don't know
changed plugs

Just changed plugs today. I am not good at reading them in detail. What you guys think?

1 3 5 7 (#3 is of some concern)
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2 4 6 8 (I know they are mislabeled)
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Old 02-01-2015, 08:03 PM
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Car: '87 IROC
Engine: LB9
Transmission: TH700R4
Re: changed plugs

I'd be more concerned with 3-5-7. They look much different than the rest. They're also next to each other (clue)? Looks like there's an oil control problem on those three cylinders.

Some will say that Bosch plugs are NFG. Some will also say that copper core plugs are a better choice than platinum for our particular application.
Old 02-02-2015, 12:54 PM
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Engine: 350 TPI
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Axle/Gears: don't know
Re: changed plugs

Intake gasket bad?
Old 02-03-2015, 08:03 PM
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Re: changed plugs

Shop just confirmed today that the intake manifold gasket needs replacing...
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