Need a little help on a Cali motor

I got a 03 Cali motor that was already torn into, and was told it was pressurizing the coolant an white smoking, I replaced the head gaskets and put the injector cups in with some cat green, I got it all back together, it runs good, started driving it and it's got a white steam coming out. He didn't get the egr cooler checked so could that be my issue? Also it's throwing an intake heater code, where does the power wire from the intake heater go? And if someone has a picture of the vacuum block for the egr (it's got 4 connectors and some small hoses) I'd really appreciate it.
Other then that it runs good other then the rear main leaking oil pretty fast:bang

Hmm, can you bypass the cooler with a short hose ?

is there fuel in the oil i have heard of it pushing the main seal out when it gets fuel in it. i would check that sounds like you have an injector issue.

yeah I got about 5 gallons of oil/water out of it, and the seal was leaking pretty good

id check the injectors