Bill,
The 508 in the Barnyard Viper is a tall filled 440 (to the bottom of the water pump holes). It has completed two Drag Weeks. Water temp never gets over 190, oil temp usually 210-220. We have a small oil cooler on it, and it needs a bigger one, when we push it hard, oil temp climbs to 230-240, and pressure starts to drop, 10-15lbs less than normal, and we change the oil at the next track!

It was a race engine that got pressed into street duty, so far, so good.