Hi,
It might sound like a dumb question but......

what part number ( Champion or NGK) would I need for these ali heads?

Combo is 440-512 stroker, comp xe290 solid cam, 1.6 roller rockers, weiand single plane, holley 980 cfm ,headers and dual system. 4 sped car.

any starting point would be good

Thanks

Nick

When I got mine..440 source sent me a set of Champion RC12YC. But I too would like to know what other brands cross reference..like maybe Accel, NGK, or Autolite?
Dave

I'm running NGK FR5's. It's an extended tip, resistor plug in a fairly hot heat range. So far they are looking good (light tan color) being street driven with lots of idling and low speed cruising.

This site http://www.sparkplugs.com/ allows you to enter your part number and see all similar products by other manufactures.

NGK BCP5ES or BCP6ES. BCP6ES is a colder plug.

For street just use the same plugs that later model Mopar engines came with. It is just a basic 3/4 reach plug. Used in a billion applications including almost all aftermarket cylinder heads.

Denso Iridium plug 5303 IK16 $11.99
NGK Double Platinum 4045 PFR6A-11 $12.06
NGK Double Platinum 2097 BCPR5EP-11 $7.16
NGK Double Platinum 3350 BCPR6EP-11 $7.83
Splitfire Platinum spark plug TP392D TP392D $5.99
Autolite Racing series AR3924 AR3924 $3.61
Bosch Obsolete Plug, Click "More Info" For Replacement 7527 FR8DC+
Bosch Bosch Super Start Spark Plug 7816 FR9DC $2.39
Denso Traditional spark plug 3130 K16PR-U11 $2.39
NGK V-power spark plug 4043 ZFR4F-11 $2.64
NGK V-power spark plug 3686 FR45 $2.39
NGK V-power spark plug 3696 BKR6EY $2.39
NGK Obsolete Plug, Click "More Info" for Replacement 3783 BKR6ES
NGK V-power spark plug 2355 BKR5EY-11 $2.39
NGK V-power spark plug 2391 BKR5E-N-11 $2.39
NGK V-power spark plug 2441 BCPR5EY-11 $2.39
NGK Traditional spark plug 2460 BKR5ES $2.39
NGK V-power spark plug 2526 BKR5EYA-11 $2.39
NGK V-power spark plug 2756 BKR6E-11 $2.39
NGK Traditional spark plug 4298 BCPR7ER $6.21
NGK V-power spark plug 4421 BKR4E $2.39
NGK Traditional spark plug 2330 BCPR6ES $2.39
NGK V-power spark plug 5155 FR4 $2.39
NGK V-power spark plug 5165 ZFR5F $2.64
NGK Traditional spark plug 5553 BKR6ES-11 $2.39
NGK V-power spark plug 5584 ZFR5J-11 $2.64
NGK Traditional spark plug 6130 BCPR5ES $2.39
NGK Traditional spark plug 6696 BCPR5ES-11 $2.39
NGK Traditional spark plug 6779 BCPR6ES-11 $2.39
NGK V-power spark plug 6953 BKR5E-11 $2.39
NGK V-power spark plug 6962 BKR6E $2.39
NGK V-power spark plug 7373 FR5 $2.39
NGK V-power spark plug 7390 BKR5EY $2.39
NGK Traditional spark plug 7496 BCP5ES $2.39
NGK Multi-ground plug 2288 BKR6EK $5.19
NGK V-power spark plug 1148 BCPR5EY-N-11 $2.39
NGK V-power spark plug 1266 BCPR5EY $2.39
NGK V-power spark plug 1269 BCPR6E $2.39
NGK V-power spark plug 1273 BCPR5E-11 $2.39
Splitfire Spark plug SF392D SF392D $3.99

Just an FYI for everybody...

I put a set of NGKs (my preferred brand) in my stealths last week; the hex on the plug is partially obscured by the material of the cylinder head when the plug is seated. This makes it really easy for the socket to slip off when tightening 'em.

I hadn't noticed this initially, since I was staring straight at the ends of the plugs, reaching thru the fender.

-Bill

IF you know your compression ratio then call NGK tech line--live person nails the plug you will need--simple--easy as pie and they KNOW what to use--