Cylinder head discussion 340 with stock above deck pistons

vntned said

I’d pull the spray and work on tuning or driving, that combo should run mid to low 13s without the bottle and mid 12s with the 100shot.

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The car has 12.6 afr at WOT same afr while under spray. 37* timing before spray and down ro 34* while spraying. I tuned that off the spark plugs as maximum before you get black specks on the porcelain. I can drive...... My friend has the same setup as me with no spray and runs 13.8