Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking dish.
In a bowl, mix together flour, baking powder, and salt; set aside.
In a separate large bowl, beat the eggs and sugar until light and fluffy.
Add the vanilla extract and mix well.
Gradually add the flour mixture to the egg mixture, alternating with the whole milk.
Pour the batter into the prepared baking dish and spread evenly.
Bake for 30 minutes or until a toothpick comes out clean.
Once baked, let it cool completely in the pan.
In a bowl, combine the evaporated milk and sweetened condensed milk.
Poke holes all over the cooled cake and pour the milk mixture evenly over it.