Xram53, I double checked all of the numbers and that is the way they are listed. The serial number is directly behind the distributor on the machined pad. The number is perfectly clear, (no double or poor stamping).
chuckthetruck, As I stated to Xram, the serial number is like I originally reported. No letters, it is all numbers.
Wrenchbender, The temp. sender is in the thermostat housing that is bolted directly to the front of the head. Looks like the older style plug (13/16" spark plug socket) has flat face seat. Champion Plugs N5C. Looks like the larger hose.
Could it be something other than a 292, maybe a 250 or something else? Could it be a GMC engine, maybe they shared the same castings, but serialed them differently? It does not say "Chevrolet" anywhere like a 283 would have on the valve covers. Or could it have been a crate engine long or short block? Or if it was a remanfactured engine, would they machine the pad and create their own serial number?
If I remember correctly the head casting number would be under the valve cover, is that right? I guess I could pull the cover, if that is my only option.
