Hey there. I'm in need of some help. I just bought my first Z28 a few weeks ago. Now it is all jacked up in the shed. 2 weeks after buying the car the oil pressure almost killed her. So I changed the oil pump and timing chain while I was in there. Now after I put everything back together I go to fill it with antifreeze and check the oil once more. To find coolant is pouring out my oil drain plug. I mean within 20 seconds from radiator to oil pan. What have I done wrong and have I cracked the block somehow. Thank you so much for any help.