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

plugs question...

Old Feb 15, 2010 | 05:23 PM
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hey guys i just decided to replace my plugs and got the ac delco stock one i figured they had to be better than any tired ones in there but as i pull out the first one... bosch platinum twin sparks come out so am i downgrading my ride? i also discovered a msd ignition managment box neatly hidden below the center console any opinions?
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Old Feb 15, 2010 | 05:35 PM
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Im my book bosch plugs suck I've never had a set last. Save yourself some money return the ac delcos and get just some regular ngk tr5 or tr55s
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Old Feb 15, 2010 | 05:50 PM
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Regular NGK.
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Old Feb 15, 2010 | 06:47 PM
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Multiple electrodes are a gimmick. Platinum and iridium are to resist gap erosion.

I would yank the MSD thing.
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Old Feb 16, 2010 | 12:29 AM
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allright guys thanks for the advice its to late to switch to ngk since the job is done but im really curious about the msd box i would pull it but still not quite sure...i shall post pics if i can!
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Old Feb 16, 2010 | 06:46 AM
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An MSD box should not be mounted anywhere where air is restricted. It needs to stay cool.
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Old Feb 16, 2010 | 10:26 AM
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Most people mount the MSD box on the driver side shock tower. The MSD box hidden inside the console can cause all kinds of problems if it gets too hot. Heat kills electronic components.

Go with NGK TR55s gapped at .050", or their platinum counterparts.
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Old Feb 16, 2010 | 03:24 PM
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Guys, he said "MSD ignition management box" makes me wonder if it is something to screw with the timing on the fly rather than something to make a hotter spark. Either way I would remove it. I see no gains on my car with ignition "upgrades".
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