Spark Plugs

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12-15-2006, 02:35 PM

#21

Griff

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Re: Spark Plugs

I always get mine at NAPA also. They always have a hard time looking up the actual UR5# as they use the NGK stock #2771. Have them look it up with the #2771.

12-15-2006, 02:52 PM

#22

LAKESIDE RESTORATIONS

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Re: Spark Plugs

I just checked on the #2771 plugs for you. If you need them I can have them into me in a day or 2 on average. If you want a $ shoot me a PM..

Jamie / lakeside

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12-16-2006, 12:06 AM

#23

articfriends

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Re: Spark Plugs

Quote:

Originally Posted by kennyo

What gap would you run on a procharged 502?

I ran 43's in my 540 when it still had merlin heads,the 42's and 41's were just too cold. .045 w/msd ignition,.035 w/stock,Smitty

12-16-2006, 10:03 AM

#24

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Geronimo36

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Re: Spark Plugs

I run the NGK R5674-7's (stock # 5034) in my blower motors.

12-16-2006, 01:15 PM

#25

Panther

Geronimo36

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Re: Spark Plugs

I believe the NGK R5674-7 is designed for high combustion chamber pressures. It's electrode is not sticking too far out, like a stock design plug(or like a UR5) and therefore is not as prone to the spark being blown out.