LS2 heater hoses

[Mike Holleman]

Guys, I need to know whether the 3/4 or 5/8 hose is the outlet or return on a stock LS2 water pump. On my stock small block the 3/4 is out but on the LS it appears the 3/4 is returning being that it aligns with the bottom rad hose. Anyone know which it is?
Thanks
Mike

[dhutton]

As far as I know the 3/4" hose is the return. The 5/8" hose is the pressure side.

Don

[Mike Holleman]

Thanks Don. I believe you are correct. I called Jeff Schwartz today and he came up with the same answer.
Mike Holleman