water temp sunpro gauge

smallblock? think so since it´s in the sb section...

the factory temp gauge get´s it´s value from a sensor located in the water channel from the right cylinder head to the thermostat (front of the intake, passenger side). Take a look if there are some other plugs (most intakes have some more plugs, especially aftermarket) where your new sensor can be put in. the drivers side is ok, too.

Post a pic from the actual intake, then we can tell you where to put the new sensor. Sometimes it requires adapters between the thread sizes.

Michael