my red top calibra has oil in the water

[red top ash]

im looking for a bit of help pleze after rebuilding my c20xe i forgot to put anti freeze in it by the time i got round to it it had frozen so i got anti freeze in it wen it had defrosted and ran it it was running sweet but i noticed oil in my water so i pulled my head of to find a crack along 3 bores so i got a new block rebuilt it expecting it to be right and im still gettin oil in my water resevoir any ideas please

[Frisco]

What did you torque the head to?
Did you have the head pressure tested?
Did you use a GM head gasket?

[toj28]

http://www.orsas.com/CarStuff/cav/sleeving.php

look on here

[Frisco]

You might want to find out if thats the problem before you go doing it. If the water froze in it and cracked it then its scrap

[joe joe]

could the freezing brought about the porus problem? i think that might of unless of coruse ur using a coscast head