tr6's for my 408 and 150 shot?
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tr6's for my 408 and 150 shot?
just like it asks what plugs should i be running on my motor currently have tr6's gapped at .035... but should change to a tr7 and close the gap or what? btw compression is 11.0-11.5ish
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Yup, I would do at least a heat range 7. Start with the gap out of the box (~.035) and bring it tighter if needed. Just make sure you verify gap while pulling them out of the box...don't just trust the mfg. If you need a part number let me know. Thanks.
Nick
Nick