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Old 05-22-2013, 03:29 PM
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Originally Posted by chris78 View Post
I have a 40 over 350sbc in my drag car with flat tops and phase two bowtie heads with 64cc chambers.this heads had 184 runners i believe but have been professional port out to about 194 and have 2.02 valves.I've been running auto light racing 134 spark plugs but have to replace them often and been told need a hotter plug by guys at track.wondering if anyone had a recommendation on what would be a good plug to use.i run a 750 holley and i putting quite a bit of fuel to the motor.any advice would be gratefully appreciated .
Are they fouling with fuel or oil, or busting up? The former would need a higher heat range to get'em and keep'em clean. It they are busting up it would mean detonation or preignition in which case a hotter plug would be the wrong direction to go.

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