Aprox 1000 Miles after some engine works.
New partrs:
Roller Lifters, Roller Rockers,Valve Springs and Seals etc.
Valve Job, Intake to Head matching, Head Int. and Exh porting.
Holley DP 600 cfm tuning.
Calculatet Static Compresion 11.20
Driving on Back Roads, Mountain up and down with high RPM shifting, Sprints up to 6500 Rpm, Motorway driving at 2500 RPM.
Averege over 300 Miles is 13.5 Miles/Gal.
AC Cobra 289 NAF - YouTube