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Im about to buy spark plugs for my 5.7. Anybody want to lend an opinion to what they think is a better buy? I was looking at E3, but I would like to hear some input
Depends on whether you've got a TBI or Vortec. A lot of people have good luck with NGK TR55's on the Vortecs, myself included. I've heard the TBI's run best with AC Delcos.
Depends on whether you've got a TBI or Vortec. A lot of people have good luck with NGK TR55's on the Vortecs, myself included. I've heard the TBI's run best with AC Delcos.
Cant really tell but it looks like its the remnants of a secondary air injection (smog) pump setup.