I tried one last time to get a 9.9x or better timeslip in 2018. My best remains 10.06. I took the car from St Louis to Memphis on 11/24. DA was around 850' on pass 1. the humidity went from mid 60s to mid 80 by pass 2 and the barometer was a 29.78. not terrible weather but not what I had back in St Louis a few weeks prior.
no changes were made in jetting or timing, I just added some 19" header collector extensions.. If I had made it to the track earlier in the day I would have tried more changes but it was a test of my endurance to do what we did in a 15 hour span that day.
I ran 93 octane fuel from quick trip.
The second pass had a slightly better 60' (1.479) but the engine water temp was up higher ~200* and with the higher humidity it went 10.216 @ 131.34.

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