Looking for spark plugs...

555 cid AFR heads with a Procharger.. likely about 8lbs boost..

Would like to use a resistor plug due to EFI and Stereo..

Thinking of Maybe NGK BR10ES ?

Any thoughts ?


THANKS !

Doug

Way too cold. I'd run an 8 if you're WOT a lot, maybe a 7 if not.

+1 on the BR8ES

I run 9s in my NA engines was never a problem. How much power you making? The plugs I used were iridium NGK.

Try 7's in your n/a engines. They'll love you for it. I run 7's in a 13:1 970hp 565 that turns 7500.

11's in my N/a motor in the cylinders that detonate. 10's in the rest.

Who is telling you guys to run these ice cold plugs? I wouldn't run 11's in a 2500hp blown alky motor...

The motor told me.

Please explain why you would run a hot plug in something that don't have any issues with loading up and they come out clean? My engines where 600ci 960hp on pump gas at 6700rpm 10to1cr.
That 970hp motor you are talking is it a boat engine and is it a race gas?

baja,be careful,some engines speak many languages.lol.