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Fresh build on my ls1. Driver side head heats up fast and runs 45 degrees hotter than passenger side. I have the air bled out of the system and so on. I'm wondering if the engine guy put one of the head gaskets on wrong. The driver side head will get to 160 and I can see the Thermo open for the by pass and the passenger side temp gauge hasn't moved to 100 yet. It takes awhile for that side to come up but once it comes up to 160 the driver side is up around 200. I'm hoping I don't have to pull the heads on a brand new build maybe I'm missing something. hope someone can steer me in the right direction
What head gaskets are you running? On my oem 6.0/6.2 gaskets, there is a tab that has a space before the "6.0/6.2" logo. Numbers should be to the front of the motor on both pass and driver side. I can take a pic tomorrow if needed.
The steam line is tapped into the water pump and I'm not sure how the gaskets were installed. I'm wondering if anyone has encountered this before I pull the heads.
07-25-2016, 09:27 PM
Driver side head running 45 degrees hotter 
