Looking at the picture of the motor. There appears to be a bypass hose running from the water pump to the thermostst housing. If that is correct you have a 292, big brother to the 230/250. You can check your casting number www.inliners.org.

Larry
63 C20 292 daily driver
68 C20 327 soon to be?


I don't own a vehicle that isn't old enough to drink.