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Autolite XP103 Xtreme Performance Iridium Spark Plugs



Not twin turbo lol, it was 03impala9c1's car Fully Built 4T65e-HD (23K miles)
-TEP master overhaul kit
-ZZP 7/8 3.29 gear and chain set
-INTENSE 300m input shaft
-Hardened 4th clutch shaft
-ZZP chromoly pump shaft
-ALL new Borg Warner/AC Delco solenoids
-Dynamat False Knock Elimination Kit
-more i cant think of



ZZP 3K Stall Converter



42K 2006 L32 (2k on parts)
-Fresh paint (professionally) (black)
-Whitcomb painted Gen V
-Whitcomb painted/filled valve covers
-NIC cam
-LS6 valve springs and retainers
-Viton Valve Seals
-Modded LIM
-GM Aluminum LIM Gaskets
-Aluminum oil pan
-ZZP oil volume kit
-EGR delete
-EVAP delete
-Lucas 42.5# injectors
-ZZP MPS System with 3.0 pulley
 
Those plugs wold work fine for that car. When I think fully built I think alumin heads, custom cam, gen-v or larger blower, diamond pistons balanced rotating assembly, etc....
 


Iridium plugs are made of a tougher compound than copper, they usually have a fine point tip to them and therefore the tip gets hotter. Getting a hotter spot in the cylinder means the chance of predetonation is more likely.

Food for though.
 
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