Hey guys! I recently purchased a 292. the casting # indicates it is a 1970 engine. The motor did not come with a water pump, but does have a thermostat housing just like the 250's. I have noticed that some 292's have a water pump with a large coolant bypass port (on the drivers side)with a matching port off of the lower thermostat housing. But I have also seen 292's without this style water pump. At some point did Chevy change the 292 pump over to a 250 style water pump. So I guess my other question is did my motor come with the wrong t'stat housing, or can I use it and just put a 250 pump on? Thanks guys!