I'm just about 100% sure that I was there that day that Ranger ran the 10.85 with his new Z06 with my Buick and all I could muster with a flairing trans (with a 4 lb. foot brake launch 1.46 60 ft.) on unleaded & alky around 20 lbs. of boost with 275/60 MT drag radials was a 10.15 @ 131 (with that flairing trans 2/3 shift) with an 18 degree TT chip.
PS: The pic. below is from that day at MIR and they were only running a single lane on that track rental day; wish it were two lanes that day and I know how to cut a light too.
EDIT: There were one or two other 427's there that day and I had a chat with the threesome at the end of the day; nice guys.
PS: The pic. below is from that day at MIR and they were only running a single lane on that track rental day; wish it were two lanes that day and I know how to cut a light too.

EDIT: There were one or two other 427's there that day and I had a chat with the threesome at the end of the day; nice guys.