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Discussion Starter · #1 ·
Just wondering what heat range plugs people are running in there N/A 540's ?
I've got a iron headed 8.75:1 540, mild solid roller, it's maybe making 600hp. I run the timing at 34deg.
I just got it ready for the season, set the lash , cap and rotor , timed it and changed the plugs. I must have had a brain fart or something , because I bought a set of MR43T's and took out some MR42T's.
I could have sworn I always ran the 43's. What does everyone use ?

Thanks
 
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