Results 1 to 3 of 3

Thread: LS7 plug heat range, try a TR7?

  1. 03-21-2022 #1
    Matt_lq4
    Matt_lq4 is offline
    Advanced Tuner
    Join Date
    Feb 2016
    Posts
    224

    LS7 plug heat range, try a TR7?

    Naturally aspirated ls7 7.0 making 600 rwhp.
    Currently using Ngk TR6 copper spark plugs with a 0.040" gap. I was always told 2 to 3 discolored threads from the top is an ideal heat range.

    Mine get dark about 3 threads down. Would you bother upgrading to an Ngk TR7 or leave the TR6?
    Attached Images Attached Images
    Reply With Quote Reply With Quote
  2. 03-21-2022 #2
    pannetron
    pannetron is offline
    Advanced Tuner
    Join Date
    Jun 2014
    Location
    Boulder, CO
    Posts
    202
    Those plugs looks good to me, I wouldn't go to the colder TR7.
    Reply With Quote Reply With Quote
  3. 03-21-2022 #3
    Matt_lq4
    Matt_lq4 is offline
    Advanced Tuner
    Join Date
    Feb 2016
    Posts
    224
    Quote Originally Posted by pannetron View Post
    Those plugs looks good to me, I wouldn't go to the colder TR7.
    Great to hear, thanks.
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »