if it runs cool and the oil pressure holds up drive it until the wheels fall off. I use to drive a Ford truck with a 351 clevy in it with a 600 lift sold can and 4.56 gears all up and down the highway. made many 120mile one way trips to a buddy of mines place in the hot Texas weather and street race it and drive home for work monday morning. if you have good parts in the motor and it runs cool let it eat.