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Author Topic:   Plugs
Dirt Freak

Total posts: 344
posted April 06, 2005 07:18 AM  
What plug would you use for a 355 flat top 9 to 1 motor with 882 heads?

Dirt Forum Champ
Total posts: 635
posted April 06, 2005 06:48 PM  
Autolite AR135s maybe AR134s.

The 134s might be a little on the cold side for 9:1, but I'd rather foul a plug and move up than blow a hole through a piston, tear motor apart, rebuild, then put in the colder plug.

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