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Send PMYelm, WA - USA
Joined: 7/12/2007
Posts: 356
Vette(s): 1979 L82 4 speed Scat 383 crank 190 cc Procomp Aluminum Heads 202 160 stainless valves GM Powder metal rods Speedpro H860CP Hypereutectic pistons 280 cam hydralic HEI Pro comp 1.6 roller rockers Mighty Demon 750 Sanderson CC1AP Hedders.
Ditto the thanks to Kstyer that's the kind stuff I like learning about too!
On NGK's website, up top go to Tech Support menu they got some good reading on there on the installation and tech bulletins menu. The first pdf link I posted was for the racing plugs. You can decode yours with this link. http://www.ngksparkplugs.com/docs/tech/design_symbols_plugs.pdf
Pretty good info I just learned a bunch looking up your plugs part number! 
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in Forum: C3 Engines, Driveline and Handling
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