Hello forum

I am swapping the intake manifold as well as the throttle body on my c5 base, and I know the LS1 throttle body has a coolant line on body sides. The LS2 throttle body does not have any coolant lines. Should I just connect both the coolant lines together that connect to the ls1 TB?

Thanks!

 

Either that or cap them where they originate.

 

yes tie both lines together so the heads steam ports will still work as intended. Bypassing the tb was supposed to be an old trick to help hp. Coolant going into tb cant help. Its mainly intended for up north when it gets really cold.

 

As said tie both lines together. This line runs from the steam ports on the heads to the radiator.

 

As said. These were mainly intended for cold climate, but them together or replace the line and run direct from the steam ports to the radiator.