I have heard the usual symptoms of a Blown head gasket but sometimes they blow in different places.I don't have any antifreeze in my oil or leaking anywhere but i blew a heater core and as it blew the core the car stumbled and makes a sound like a thump badly at about 40mph and 17lbs boost.Im just wondering could i have the gasket blown in a place that would cause the heater core to go because a blown head gasket does affect the cooling system but usually it comes from the radiator first.Driving around town the car drives flawlessly but when i power brake and get on it hard and when reaches about 40mph it just stumbles or sputters badly.Just wondering if anyone has heard of the car running fine with a blown Head gasket until a real hard pull
