The more I read the posts about spark plugs the more confused I get. I need help in choosing the right plug.

I have:
65 Chevelle w/327 / 202 heads
Performer Intake / 600 cfm carb
Headers / Mild cam / Hei / Spiro Pro plugs.

Seems like the AC Delcos win out. But which one??
The AC Rapid Fires, AC R43, R44t, R445t etc..

I never really gave it much thought about plugs until I got a Chevelle and started to read the postings. But, now I need to know..
And the gap is ???

Thanks in advance,
Jack

I am running AC Rapid Fires in my '70 307. I have no complaints. The gap for the HEI should be .040-.045. That will give you a nice hot spark.

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Fred (Southern NJ)
Madness takes it's toll, please have exact change.
'70 Chevelle
www.geocities.com/motorcity/shop/9385/1970Chevelle.html (http://www.geocities.com/motorcity/shop/9385/1970Chevelle.html)