Originally Posted by Cab_Burge
That looks a little rich to me shruggy
How much timing and what heat range is that plug?


That’s what i was thinking, but wanted more experienced opinions. Thx. I do like the idea of it being just on the rich/safe side.

Timing at 35 with a -1 Indy head chamber. Ngk R5672A-8 plug on recommendation.

1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.