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

Spark plug change for our 90 L98

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Old Apr 18, 2002 | 05:32 PM
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Default Spark plug change for our 90 L98

I have read posts mentioning a better Delco spark plug than the stock plug, I forgot what's its called, fire ring or something like that. Would any one know the name and the Delco plug number for a stock 90 L98??
Help Wanted!!!!!!!!!
Thanks
Bill :) :)
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Old Apr 18, 2002 | 05:33 PM
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Default Re: Spark plug change for our 90 L98 (paid4c4)

Ac Delco Rapidfires
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Old Apr 18, 2002 | 05:50 PM
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Default Re: Spark plug change for our 90 L98 (paid4c4)

For Rapidfire numbers and a review click below.
www.corvetteforum.com/reviews/viewsubtopic.php?SubTopicID=461&TopicID= 2
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Old Apr 18, 2002 | 05:53 PM
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Default Re: Spark plug change for our 90 L98 (paid4c4)

RapidFires.... been running them in my 89 for around 6 months now.. good plug
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Old Apr 18, 2002 | 06:05 PM
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Default

AC Delco Rapidfire #5 gapped to 0.035".
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Old Apr 18, 2002 | 06:08 PM
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Default Re: Spark plug change for our 90 L98 (Bluevette85)

I have them in mine. Works fine.

3 Generations that I know of:

Orginal RapidFire - sort of star shapped copper core

Platinum RapidFire - redo of above happened last year some time I think.

This year: Out of production - I think.

Pete
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Old Apr 18, 2002 | 08:51 PM
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Default Re: Spark plug change for our 90 L98 (PeteL)

Discontinued?????? huh/....i just called..they have them in stock? they could not give me a year or GM code though....is one rapidfire better then another?

I would hate to have to do plugs twice!

lol
Jeff
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