Made a few good 1/8 mile runs and then ran one 1/4 mile runs. Plugs all looked good so not 100% sure why it hurt the head, but definitely torched it. A/F on the datalog was good the whole run so it founds its way out somehow. Maybe lifting the head I guess. Got all winter to get it fixed up though.
6.044@121 was the 1/8 mile time. Footbraking cause the track was not going to hold the transbrake, blew the tires off the first run trying that.
Didn't help running on 2 year old Hoosier 275/50/15 drag radials with about 100 passes on them.