422 high compression & spark plug gap?

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Jul 3, 2004 | 10:19 AM

Brian C

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From: Berkley, MA

422 high compression & spark plug gap?

Just wondering what spark plug gap is being used on high compression 422 cu in LS1's. Trying to track down a loss of power at high rpm's in a friend's car.

Thanks,
Brian

Jul 3, 2004 | 03:08 PM

strokedls1

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From: Venice, Ca

I use .039 gap with 11.2-1 on a iron 422 with a 100 NX wet shot. 28 degrees of timing with no knock retard. NGK TR6 plugs.

Jul 3, 2004 | 05:00 PM

TApimp

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From: TX

what compression ratio is it?

u may be able to run an NGK 5671A-7 or -8 in it

Jul 4, 2004 | 08:48 AM

Brian C

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It's about 12.5:1, no nitrous.

Thanks for the replys,
Brian

Jul 4, 2004 | 01:44 PM

Nickn20

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From: Bay Area, CA

Try a TR6 @ at the factory .035 gap.

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