Not unusual with BBC. Has to do with fuel distribution most of time. But you will probably need to go up just a small bit in plug heat range. Or if you can find one in a very close but slightly hotter heat rance a Commercial (Heavy equipment/Heavy duty line) plug will usually stand up better. Autolite is very good and used to make a Commercial set of plugs for lots of different combinations. Maybe look in C-60 BBC truck engine line. ----- Original Message ----- From: "Larry Williams" <[email protected]>
To: "The Chevelle Mailing List" <[email protected]>
Sent: Monday, August 24, 2009 8:04 PM
Subject: Re: [Chevelle-list] Autolite Racing Plugs


Yes.

John wrote:
Did it by chance foul the number 2 cylinder?
----- Original Message ----- From: "Larry Williams"
<[email protected]>
To: "Chevelle List" <[email protected]>
Sent: Sunday, August 23, 2009 7:01 PM
Subject: [Chevelle-list] Autolite Racing Plugs


I have been using the Autolite Racing AR 3934 plugs in my BB.  The
car is street driven with an occasional full throttle blast.  I have
one that fouled and will replace it tomorrow.  Do any of you use this
plug and how do you like it?   Fouling problems?

Larry
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