I have a 79 f150 with a 351 modified under the hood I am having a problem with it smoking. As soon as I start it white smoke starts pouring out of the exhaust. Im not to sure what it could be any suggestions would be much appreciated.

 

Sounds like a blown head gasket. Are you using water?

 

Ok thanks im going to have to check it out. And yes im using water.

 

Generally when your using water you either got a cracked head or bkown head gasket.