Would a combo of the M/T having 2" more roll out and having to run less PSI account for the lower ET & MPH?
The 60 foots were very close. 1.41 Hoosier & 1.42 M/T.
Hope to try Castrol this Sunday.

1971 Plum Crazy Super Bee. 572 World Aluminum block with a Cope 727 & Dana 4.10 out back. 9.88 @ 138 with a 1.35 60 NA. Dialed back to 10.0’s. 4000 lbs with me in it.