Sparkplugs with vortec heads and TPI

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Apr 3, 2002 | 11:45 PM

3.8TransAM

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From: Schererville , IN

Car: 91 GTA, 91 Formula, 89 TTA

Engine: all 225+ RWHP

Transmission: all OD

Axle/Gears: Always the good ones

Sparkplugs with vortec heads and TPI

Should i stay with stock heat range ? or should i step the heat range down anothc or two?
looking for some opinions
later
jeremy

Apr 4, 2002 | 01:14 AM

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Theres no reason you should need anything other than stock. I'd run stock heat range, check them after a few hundred miles and see if they look right, then change them to a different range if needed.

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