? About TR6 spark plugs
#1
? About TR6 spark plugs
I went to change out my original spark plugs today with some NGK TR6 plugs, but the threads on the TR6's are twice as long as the originals. I am S/C and I read that the TR6's are the plugs to get. Is anyone using these plugs and ran into the same problem? Are there any clearance issues with the pistons because the plugs are an extra 1/2" into the cylinders?
#2
RE: ? About TR6 spark plugs
NGK
PART# / HEAT RANGE
TR-55/ 3951/ Stock Heat Range
TR-6/ 4177/ 1 Step Colder
BP7EFS (PN - 3526) BR7EF (PN - 3346) two steps
R5724-8 (PN - 7317) two and a half steps
R5724-9 (PN - 7891) three steps
R5724-10 (PN - 7993) four steps
So you got the TR-6/4177?
PART# / HEAT RANGE
TR-55/ 3951/ Stock Heat Range
TR-6/ 4177/ 1 Step Colder
BP7EFS (PN - 3526) BR7EF (PN - 3346) two steps
R5724-8 (PN - 7317) two and a half steps
R5724-9 (PN - 7891) three steps
R5724-10 (PN - 7993) four steps
So you got the TR-6/4177?
#7
RE: ? About TR6 spark plugs
one thing i have learned since i am older than most, is american plugs in american cars and vise vera... they seem to work better for some reason.... fyi, i have autolight copper in mine because of power....i put ngk in my tahoe and it ran funny i switched back to a american plug and it ran better
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