66blownmustang66

im running a B&m MINIBLOWER on my 66 mustang, 302, 6LBS of boost. i pulled the number 1 spark plug today, and it was a reddish brownishiy color.. i think its burning too hot but i dont know.. can anyone help? should i get a degree cooler for it?

JMD

I always thought reddish brown was good...

But I don't trust my opinion enough to take a chance with your engine!

Don't they get kind of whitish if running lean?

__________________
39 Ford Coupe,
408 Windsor
Tremec TKO 600
TCI Chassis
9" Track Loc.
Lots of Parts and Labor
No out sourcing of labor!

http://s245.photobucket.com/albums/g...CMS/39%20Ford/

"El Gringo, NOT El Coulo" (Not always a coulo)

valley firearms

[align=left]+1. That is the color you want. Post some pics of your engine.

__________________
http://www.cardomain.com/ride/2981459
http://www.youtube.com/watch?v=iQtHM5ynRjQ

kalli

if the plug looks like a fox then that's what you're aiming for. all good.

__________________
1964 1/2
289ci, Holley 570cfm, Weiand 8124 intake, Holley headers and Flowmaster 40s
Quick Performance Racing 9" rear, Moser axles, 3.5:1 trac-loc from FRPP and T5.
CSRP disc brakes front and FRPP discs back.
http://www.gascc.ie

67mustang302

Greyish-tan to brown. Somewhere in that range, with no obvious signs of anything wrong, like oil or carbon deposits etc. Sounds like yours are fine.

__________________
Who cares how much horsepower it has, all that matters is how fast it goes!

Best run 13.23 at 106.97mph with a 2.183 60'
Times from before tune and driver mod.

Reverb

__________________
1970 Mach 1 351C with 4V heads, 4 barrel 650 cfm Holley with an Weiand intake. Will be a 393 soon with JE pistons and Scat crank and 6" H rods - hoping for 8000rpm and maybe a 250 shot of laughing gas.

JMD

Nice post Reverb!

Hey James W.,,, I nominate this chart for FAQ status!

There are lots of plug questions on here.

__________________
39 Ford Coupe,
408 Windsor
Tremec TKO 600
TCI Chassis
9" Track Loc.
Lots of Parts and Labor
No out sourcing of labor!

http://s245.photobucket.com/albums/g...CMS/39%20Ford/

"El Gringo, NOT El Coulo" (Not always a coulo)

66blownmustang66

thanks for all the replies guys, i just wanna make sure im not pre igniting, and all that good stuff... preciate all the help ;] ...