NC hybrid setup/coolant blows heater core/how to avoid?

[Bruce Plecan]

It reduces the amount of water bypasing the radiator, and also, helps to
pressurize the coolant in the head at higher rpm, reducing localized hot
spotting.
All, very good things..   The hole in the thermostat is to make sure no air
accumulates on the bottom side of it.   If ya llook close on some hot rods
the first day after running the heater full one for weeks the temp guage
rises rather high the first time the thermostat opens.   The colder the
weather the worse quicker this happens.
Bruce


> >   If when ya do the cam, on the passenger side of the water pump is a
hole
> > in the water pump/block.  Tap that out and put a 1/8 pipe plug in, it.
> Is that the weep hole or something else?  Why would you want to plug it?
> > Then drill a 1/16 or 1/8" hole in it.  Also, a 1/8" hole in the
thermostat.
> >     The above is just what works for me.
>     I had very good luck with the small (1/8") hole cooling down my
overheating
> escort, when I had it.
> James Ballenger