Nice Link Mark, thanks.  I didnt see any reference to ECG-C heads though.  Maybe with a flashlight and mirror the block ID will show up from beneath the car.

Does the wagon's serial number beginning with M really indicate it came with a T-bird engine?

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

Mike,

Take a look at this link I found last night. It shows C heads for 56 only and it comes back once for 1960 292's. Doesn't differentiate by by carb, only HP. Maybe that will point you towards something.

http://books.google.com/books?id=0gaA5cQXYPkC&pg=PA103&lpg=PA103&dq=ford+ecg+t+cylinder+head&source=bl&ots=suhyLBRydm&sig=KJsshHaH-dI-Egsuu04qnA3sR60&hl=en&ei=OTQRTrXNFY6usAP1lpTDDg&sa=X&oi=book_result&ct=result&resnum=3&ved=0CFQQ6AEwAjgK#v=onepage&q&f=false

57 Black Tbird 312/auto

Aided by internet searches, it looks like the '55 Thunderbird 292 engine came in a P and M code versions, the M having lower CR and HP.  I found that the station wagons of that year came with optional T bird engines.  My '55 wagon's serial number starts M5RX.  The way it looks it has an M code T bird engine, and was built at the San Jose, CA plant.  If this is all correct, does someone know the specs for the '55 M code T bird cams?  Internet searches didnt yield anything.

The heads are ECG-C, 8.5:1,  but I still havent been able to see the block ID.  I think John M's site lists the ECG-C as being for a 272 with 4V.  However according to Holley they never made a 4V for '55 272s.

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.