which spark plug

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Dec 2, 2013 | 08:08 PM

scottybazo

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.

Dec 2, 2013 | 08:15 PM

a/c man

Le Mans Master

Joined: Jan 2009

Posts: 7,767

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From: East Texas

NGK TR6 gap to only .28 the boost will blow out the flame if grater than .32

Dec 2, 2013 | 08:27 PM

fotoboy

Drifting

Joined: Oct 2004

Posts: 1,621

Likes: 6

I ran tr6 at 730 whp. I gapped at .022

Dec 2, 2013 | 08:42 PM

a/c man

Le Mans Master

Joined: Jan 2009

Posts: 7,767

Likes: 19

From: East Texas

Tr6 is used because its a cooler temp plug. they are only like $2 each too so you can change them often!

Dec 2, 2013 | 09:08 PM

MVP'S ZO6

ISIS SUCKS FAT CHOAD

Joined: Oct 2008

Posts: 8,124

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From: Earth, United States

Im running these gapped at .035

Dec 2, 2013 | 10:09 PM

danieloneil01

Drifting

Joined: Apr 2011

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From: Tulsa Ok

7's here

Dec 2, 2013 | 10:12 PM

MVP'S ZO6

ISIS SUCKS FAT CHOAD

Joined: Oct 2008

Posts: 8,124

Likes: 53

From: Earth, United States

Quote:

Originally Posted by danieloneil01

7's here

I run the 8 in the cylinder #7

Dec 3, 2013 | 12:19 AM

joshtownsend

Melting Slicks

Joined: Mar 2008

Posts: 2,412

Likes: 4

From: Houston/Dayton Texas

br7ef... its a non projected tip so it doesn't get blown out.. and they are also $2 or so..

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Dec 3, 2013 | 12:33 AM

a/c man

Le Mans Master

Joined: Jan 2009

Posts: 7,767

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From: East Texas

Quote:

Originally Posted by joshtownsend

br7ef... its a non projected tip so it doesn't get blown out.. and they are also $2 or so..

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

Dec 3, 2013 | 01:10 AM

#10

fotoboy

Drifting

Joined: Oct 2004

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Br7ef now at 800 whp. I'm also corn so I think u can get away w a hotter plug.

Dec 3, 2013 | 07:13 AM

#11

madmatt9471

Team Owner

Joined: May 2006

Posts: 21,473

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From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----

I run the BR7EF NGK Plugs - Gapped at .028

They are a non-protruding tip!

Thanks,Matt

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