Drilling the thermostat??

[wtm442]

One of the holes should be at the top when installed, because the air bubble congregate there.

Actually, I would forget the holes and use the bypass hose. The Ford engineers do not just add stuff to make engines more expensive. They added the bypass for many reasons.

[patrickt]

Originally Posted by wtm442

The Ford engineers do not just add stuff to make engines more expensive. They added the bypass for many reasons.

Yep, and now that most of our water is fluoridated the risk of cavitation is greatly reduced.

[CobraEd]

As far as I know, only Ford has these bypass hoses. I have never seen them on Chevy, Chrysler, Pontiac, Olds, Buick, Tucker, Kaiser, Nash, etc., etc.

.

[patrickt]

Originally Posted by CobraEd

As far as I know, only Ford has these bypass hoses. I have never seen them on Chevy, Chrysler, Pontiac, Olds, Buick, Tucker, Kaiser, Nash, etc., etc.

.

A lot of cars have internal bypass channels in the water pump itself, small block Chevys come to mind. Our friendly FEs do not.

EDIT -- Looks like Mopar saw the light in 1951. **NEW** NAPA Airtex Water Pump

[speed220mph]

The 351C, 351M and 400 engines have internal bypasses, too . . . in the blocks.