If I use the torque converter slippage calculator it says 14%. Crossing the finish line with 30" tall tires at 6,800 RPM with 4.11 gears doesn't add up with that MPH.
Engine Specs
Block GM 502
Crank Scat Crank 4.25 stroke
Rods Scat Rods
Pistons J&E 10:1 Compression
Heads Dart Pro 1 335 CNC Ported
Cam Comp Cams Roller 260/268 @.050 .714/.714 Lift
Intake Dart 4150
Carb 1000 CFM Race Demon
Distributor MSD Billet Distributor with 6AL Box
Exhaust 2 1/8 Hooker Super Comps with 3" Flowmasters