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Old 08-24-2012, 01:09 AM   #1
locoycabron
 
Drives: 2010 Camaro SS
Join Date: Apr 2012
Location: Dallas, Tx.
Posts: 50
Which spark plug for 515ish RWHP

Which spark plug would you guys use on a 2010 camaro with 515 RWHP with a a big cam? I know the stock spark plug is rated 5 for heat range so the next step would be a 6.

Should i apply 1 colder heat range for each additional 100 RWHP or 2 colder heat ranges?

Would you go 2 steps for a:
NGK BR7EF or
NGK Iridium TR7IX

Or well just 1 step ahead to a 6 heat range numbered spark plug?
NGK BR6EF or
NGK TR6IX

thanks for you comments!
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