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Old 09-12-2003, 09:46 AM   #1
76bonanza
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Another Plug question

I have just a oriely rebuild 350 headers and carb holly 650.

I am running ngk 6630 is this the right temp range and I am running .045 gap?

When will I have to go to a dif temp plug? Ie"intake, ignition box, cam new heads?

Thanks.
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Old 09-13-2003, 07:12 AM   #2
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ttt
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Old 09-13-2003, 10:21 AM   #3
bigd65
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you really dont need to unless you start changing the components inside ie.... pistons for compression, cam (large enough to make a difference) etc....
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