My son drove his 74 charger, 408 striker motor, had a hose leak and it got very hot. Put water and antifreeze in at and got it home. Installed new water pump and thermostat. When he drove it to test it it was smoking some white smoke from the drivers side? I checked the plugs, 2nd on the drive. Side looked a little wet. All others were fine. It still seems to smoke a little on that side but no oil in water and no water in oil? Compression check was about 150 on every piston? Head gasket or possible cracked head?? Thanks for any advice