Quick spark plug question
#1
Quick spark plug question
I'm about to do heads/cam/intake/fuel etc. on my Z28 and I'm wondering about if I will need to do anything different in terms of plugs. Compression will be up to 11.0:1, running N/A on pump gas. I have been using TR5's gapped to .040.
May be kind of a dumb question, and I don't think I need to change anything, but I figured I would ask.
And I did search
May be kind of a dumb question, and I don't think I need to change anything, but I figured I would ask.
And I did search
#4
12 Second Club
iTrader: (6)
The TR5's and TR55's are the same plug (heat) with different gaps. You shouldn't try and bend a 55 to .040, thus why they make the TR5. Anyway I went to a TR6 4 years ago and like them, gapped at .039 11:1 compression. I ran TR5's gapped at .040 for about a year, car idles better (for me) with the TR6.