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#1
05-21-2008, 03:50 AM
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Spark Plug Help
I need help trying to find the right plug for my engine. It is a GM crate 454, I believe it is the 430hp version. It has the cast iron heads and is probably a version from 3-4 years ago. It was in the car when we got it and someone changed the plugs to a different number last year. They are fouling out due to bad carbs and I want to put the correct plug back in the engine. Is there anyway to find out the correct plug for the engine? I emailed a couple of GMPP dealers and got no replies.
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#2
05-21-2008, 08:48 PM
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Re: Spark Plug Help
What heads? Just a guess, but I'd say they're *probably* an open chamber w/ tapered seat spark plug...sound about right?? If so, something in the NGK UR4 or UR5 range would work...
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