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Old 09-28-2010, 10:53 PM   #1
ebry710
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Upgrade 350 to 65K volt HEI, what size plug?

I am upgrading my 1971 350 to a 65,000 volt HEI. Is there a spark plug that is better for the change?
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1971 Chevy C-20 Flatbed SBC350/Turbo 350

"Torque Is Controlled Power"
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Old 09-28-2010, 11:12 PM   #2
'72customdeluxe
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Re: Upgrade 350 to 65K volt HEI, what size plug?

i run ngk #6630 with that hei, .045 gap
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Last edited by '72customdeluxe; 09-28-2010 at 11:12 PM.
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Old 09-29-2010, 12:08 AM   #3
ebry710
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Re: Upgrade 350 to 65K volt HEI, what size plug?

That was easy. Thank you.
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"Torque Is Controlled Power"
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