My 2016 F150 2.7 with the 3:31 gears and and the 6spd cruises at around 1800rpm at my normal 72-73mph.
My GTO with the .64 TKO and a 3:73 is at about 1900+- doing the same.
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frittering and wasting the hours in an off hand way....
1969 GTO, 455ci, 230/236 Pontiac Dude's "Butcher Special" Comp hyd roller cam with Crower HIPPO solid roller lifters, Q-jet, Edelbrock P4B-QJ, Doug's headers, ported 6X-8 (97cc) heads, TKO600, 3.73 geared Eaton Tru-Trac 8.5", hydroboost, rear disc brakes......and my greatest mechanical feat....a new heater core. 
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