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Old 03-17-2010, 05:53 PM
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sbc400

sbc 400 with vortec heads just wondering what kind of spark plugs should i be runing. its going to be carb..

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Old 03-17-2010, 07:15 PM
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Regular AC Delco plugs for any 1996 and up chevy vehicle with a L31 Vortec 350.
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Old 03-17-2010, 10:08 PM
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Quote:
Originally Posted by DoubleVision
Regular AC Delco plugs for any 1996 and up chevy vehicle with a L31 Vortec 350.
The spark plug application book may also show this motor as a 5700 Vortec. Just so you know....
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Old 03-17-2010, 10:33 PM
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I run AC Delco R44LTS plugs. You have to use "LTS" plugs with Vortec heads.
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