which spark plug
Thread Starter
Instructor
Joined: May 2011
Posts: 109
Likes: 2
From: Gardena CA
which spark plug
Hey guys on my 2003 Z06, im running P1sc setup with 8.5 psi of boost,Kooks 1.78 headers,boost-a-pump,Nick Williams 102mm tb,and a Fast intake.Car runs great,and makes gobs of power.I just turned 28k on my odometer.I have never changed my plugs.Still have the original ones that came from the factory.When i swapped intake and tb,i installed a set of MSD wires,but not the plugs.Im now in the middle of installing a comp camshaft 624/621.What plugs to u guys recommend i go with.Ive read some articles over the years,but i want the most proven for blower application.Thanks fellas in advance.
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Le Mans Master
Joined: Jan 2009
Posts: 7,767
Likes: 19
From: East Texas
this is what im running at my HP level. For the poster I think TR6 is good till about 725rwhp! at 750+ a cooler plug is better like the 7s
