CHIPSTER

I installed an LS6 out of an '05 Cadillac CTS-V. With the idea of keeping the engine components as much like factory (CTS-V) as possible, I installed an ALRADCO CTS-V radiator. Now, I need to figure out the proper routing for the coolant lines.

My Helms manuals do not really cover this on the LS6 (only the lower models). Here is what I have gathered so far:

1) Steam line exits the throttle body and tees into the overflow line from the top of the radiator and both of these lines run to the TOP of the Expansion tank.
2) The outlet from the BOTTOM of the Expansion tank ties into the heater lines...SOMEHOW????? This is what is missing from the Helms books.
3) Hoses from the Thermostat flow to and from the Heater Core.

What is the normal flow for the LS6 (I'm sure LS1 is close or the same)? What size Expansion tank do I need? Does this website speak the truth? http://www.pirate4x4.com/tech/billav...CoolingSystems

Thanks,
Dan

gagliano7

I have a 5.3 in 1992 chevy pickup.Top outlet of water pump goes to top of radiator. Lower radiator goes to lower water pump. Heater hoses got heater core. and my steam vent is teed in to the front of the heads and goes to a nipple i threaded in to the top of water pump.