which of these NGK spark plugs would u guys think is the best?
-NGK TR55 Spark Plugs Each
stock heat range gapped at .050"
-NGK TR5 Spark Plugs Each
stock heat range gapped at .035"
-NGK TR6 Spark Plugs Each
one heat range colder than stock gapped at .035"
-NGK R5724-8 Spark Plugs Each
three heat ranges colder than stock gapped at .032"
-NGK R5724-9 Spark Plugs Each
four heat ranges colder than stock gapped at .036"

thanks if you can help!

 

If it's stock either go with some stock ones or the TR55. Others are good also but for more modified cars/engines.

 

I run TR55's gapped at .050 on my mild bolt on car......

 

im gonna highly mod my camaro, and heads/cam , lt , 3500 stall, and all those, what should i pick ,and around next year maybe 396 and twin turbo? which would u reccomend?

 

I would get the TR55's and gap them to .035 or .040

Brandon

 

Why not just use stock plugs with stock gap?