NGK TR5 or TR6???
NGK TR5 or TR6??? I just got off the phone with Trick Flow and was told that they would recommend a NGK tr6 for my 370 6.0 iron block with, as cast, 220 heads. The motor is set up for a Procharger but will be run NA for awhile before installing the blower. I thought that for NA the TR5's would be a better choice and then go one step colder (tr6) when using FI. What would be a good gap to start at? What do you guys think?
You always want a fresh set of plugs for the dyno, maybe thats just me. When I put my blower on I sent the computer off for a mail order tune just to drive it for a litle bit before the dyno tune, the mail order tune was pig rich and I was replaceing plugs after 2 pulls on the dyno. Plugs had less than 100 miles on them.
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From: Southaven, MS (near Memphis, TN)
Go TR55 for N/A, then whenever you go with a Procharger pick a more suitable plug.
They are cheap enough to change out a few times..hah Around $13-14 after tax at O'Reillys here.
They are cheap enough to change out a few times..hah Around $13-14 after tax at O'Reillys here.
