RE: Spark plugs

["Gary H." <62to65mopar@xxxxxxxxxxx>]

2976. 

"...for domestic manufacturers (Champion, Autolite, Splitfire), the 
higher the number, the hotter the plug. For Japanese manufacturers (NGK, 
Denso), the higher the number, the colder the plug."
see: http://www.ngk.com/charglossary.asp?kw=Heat+range

Gary H. 


Brian Schlump wrote:
> 
> Christopher,
> Do you know which of these 2 plugs has the hottest temp range?  My Max 
> Wedge has a tendency to foul the plugs, so I would prefer to run the 
> hotter plug...Brian
> 
> 
> mrchristopher1  wrote:
> > 
> > Per Don D. "Autolite# 2976, more room and durable trust worthy plug."
> > "Autolite 2974 is my favourite....


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