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From: Some days your the dog and some days your the hydrant.
Royal Canadian Navy
If your water pump has a bypass like the oem, then you don't need a modified ts. And drilling holes in the ts are not needed to get the air out either or GM would have done it.
This is the stage two Stewart pump that I'm using. The point that I want to make is that, the modified tstat is not really needed with this pump. Stewart says to use the modified tstat. When I do that the motor doesn't warm up.
I just looked at my pump. I have a nipple coming out of the side of the pump. It is plumbed to the heater valve. I have a pipe plug in the top of the pump. The other heater hose hooks up to intake manifold from the heater.
Sorry forgot to take a picture.
I put the non-modified 195 degree stat back in just now. It's getting to 195 and dropping to a steady 180. So that's how I'm going to run mine until Summer.
This is actually the correct pump that I am using. It has provisions for two outlets. Is this what is considered a bypass type pump or not? Small Block Short Stage II pump
yea the pumps cavitating but the pressures in a water pump probably dont even phase cavitation it happens all the time whether its clogged or not unfortunately
