white smoke, head gasket?

[drewmp28]

I just put a motor in my 88 LX it was a 302 from a 93GT, hooked it all up and it runs, but I was leaking coolant at the throttle body and EGR spacer and it was coming out of the tailpipes. I took replaced all the gaskets at the throttle body and EGR spacer, no leak there now, and I don''t see the green coolant coming out of the pipes, but there seems to be an excessive amount of white smoke ( it is cold here now about 20 degrees) and has a little water dripping fromt he pipes now. I have read several posts saying that coolant will make you blow a head gasket, would I of got the coolant in there to mess that up when it went through to the tailpipe? how can I tell, it seems to run good, just the smoke. ANy ideas! I don't want to do further damage!

thanks