Why is it when ever i post a question on here no one replys?i try to help who ever i can when i can,but no one helps me,i posted a question about what spark plugs people use and got no replys,i guess no one uses plugs but me.funny i posted the same thing on baja marine and got a dozen answers quick-AWESOME!

I use NGK BR 6 FS !!!

Sometimes more details are needed. Just saying "509, aluminum heads, big cam" isn't enough info for these guys to answer the question.

btw.... I use NGK BCP6ES ..... 557, 315 AFR's, Wilson intake, rmbuilder cam, lots mo'dan 620 hp LoL

I use r43xls.. People need to know what set up you haveto give you and answer that won't blow your chit up.

I use ngk v power R5671A-9. These are in a blown 454 application so I did not think it would apply

If you said blower motors I probably would have replied... But I do understand the feeling; be persistent!

I am using Autolite 3911...did use NGK -8. I would say any brand plug in this heat range for a NA low compression BBC application.

I use NGK's

What is your application ?? Had you posted that you might have gotten more answers.

Us too !!!!!!!

my crystal ball very cloudy on your set-up.....but i use accels, love them

AC Delco MR-43T for stock 502EFI and they are just fine. If not in salt the AC R43T works just fine