Thread: Best plug to use on my 428
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Old 09-17-2007, 08:18 PM
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davids2toys davids2toys is offline
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Join Date: Dec 2006
Location: Southbury, ct
Cobra Make, Engine: ERA, 428, 4 speed Toploader, Jag rear, Red with White stripes
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Default Best plug to use on my 428
Newer owner here...just pulled a plug, seems to be burning good, have no idea how long or how many miles they have been in the car, so I want to change them.
What I pulled out was a champion RF91C...are these Ok, or should I be running something different, also, what should the gap be? What should the torque be?
I have a 428 w CJ heads, and MSD 6AL box.
Thanks All!
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