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Old 06-21-2013, 08:56 AM
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wheelerd wheelerd is online now
MC Devotee
Join Date: Dec 2007
Boat: 2005 X2
Location: Central Alberta, Canada
Posts: 1,811
Coolant flow on a GM small block (with the exception of the LT1):
- in from raw water pump (in from lower rad in a vehicle)
- out back of water pump into front of block
- through block up into intake manifold
- past thermostat
- out to exhaust risers (out to upper rad in a vehicle)

Because of this flow your hottest water will be right before the thermostat. That's why the heater supply hose typically comes out of the intake manifold (as my earlier post and the pic of the MCX shows.)
The hot water supply for my shower comes from the LH side of engine (V drive, so starboard side of the boat) at the drain plug hole.
2005 X2, Viper Red, MCX, OJ TZ-X5 prop, PPass, rear 750 sacs, KBS, IBS, Bennett Wake Plate, custom wake shaper
(previous) 2001 X5, 1991 TriStar 190
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