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09-18-2017, 02:35 PM
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Registered User
Join Date: May 2017
Location: TX <--> MI
Posts: 279
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454 Spark Plugs
Hey guys, sorry if this has been asked before, but I couldn't really find anything. I'm going to do a basic tune up on my 454 and pulled a plug out. Definitely can use new ones, anyway the plugs in it are NGK V-Power UR4. I've never owned a big block before, but that seems like quite a hot plug. The engine isn't a built hotrod, but it has a high rise intake and an Edelbrock 750 carb. Sounds like there may be a mild cam in it too. Nothing crazy. So should I replace the plugs with the same or go with a slightly colder plug?
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1978 GMC K25 1984 Chevy Scottsdale K10 built 350 4"lift - SOLD |
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