ZL1 Spark plug
Thread Starter
TECH Apprentice
Joined: Jan 2011
Posts: 309
Likes: 1
From: Australia
ZL1 Spark plug If Running a ZL1 with highflow 100cell cats, intake, 160 thermostat should you run NGK TR6's?
Stock boost nothing done to it other than whats listed.
Getting tuned soon once all mods are added.
Stock boost nothing done to it other than whats listed.
Getting tuned soon once all mods are added.
LS1Tech Sponsor
Joined: Oct 2002
Posts: 603
Likes: 1
From: Decatur, IN
Stay with the stick plugs even with the 2.55 pulley. We stay with the stock plugs even at 750 HP.
Don't switch TR6 at all for any power change. They are a hotter plug than the stock plug. OEM plug is similar to a NGK TR7 or a DENSO IT19.
If you need a colder plug (big power adder, sustained time at load etc) the IT24 is a good option. At 1200 to 1400 HP we have used both the IT24 and IT27. IT27 more likely foul out when cold/idle.for drag racing IT24 is enough. For sustained load (standing mile, marine use etc) IT27 would be better.
Jason
Don't switch TR6 at all for any power change. They are a hotter plug than the stock plug. OEM plug is similar to a NGK TR7 or a DENSO IT19.
If you need a colder plug (big power adder, sustained time at load etc) the IT24 is a good option. At 1200 to 1400 HP we have used both the IT24 and IT27. IT27 more likely foul out when cold/idle.for drag racing IT24 is enough. For sustained load (standing mile, marine use etc) IT27 would be better.
Jason
