Spark plug choice and gap?

[ravinshield]

I have a 04 cobra with a 2.8 pulley, cat-back and hi flow x pipe. what spark plugs should i use and at what gap. i havent dyno the car so not sure how many lbs of boost its making. thanks

 

[KLLR SNK]

Tr6 at .032" is preferred for the dyno but afterwards I like running mine gapped at .038" with no blowout.

 

[apex svt]

Tr6's for sure. Get them from rock auto. They have the best price and if you google it you get 5% off. Just bought 4 sets the other day

 

[nxhappy]

TR6 @ .032

 

[R3dfireCobra]

TR6 @ .030 @ 19psi is my current setup. If I remember right I think I did .032 when I was a pullied Eaton w/ 2.76 pulley on pump gas.

 

[nxhappy]

pretty good deal :

http://www.ebay.com/itm/NGK-4177-TR...ash=item41b13b54f9:g:174AAOSw9GhYl0uQ&vxp=mtr

 

[bssmith1220]

Another tr6 at .032 here.

 

[351stang]

NGK BR7EF is one heat range colder TR6 in the same V-power plug. Gapped at .032"

https://www.ngk.com/product.aspx?zpid=9538