I have a 315W ? number above the starter location is D4AE-6015-AA3 ( 74 car Correct? ) and a stamped number on block machine pad, passanger side front stamped 5 11 67. This one has me stumped 351W first years was 1970 ? What is this number?
I have an engine in an 82 F-100...The motor was in the truck when I bought it, and the guy told me it was a 351w....I am trying to put a rear main seal in it..and all the seals I keep getting are wrong...I wrote the engine block number down and no-one can tell me what it is... the block number.. D4AE-6015-AA3....
first digit refers to the decade (60's = C, 70's = D) while the second digit refrs to the year within the decade, or 1974.
Easy 351W versus 302W check: measure across the width of the engine's intake manifold bolts, center-to-center. A 351W is 9" across (9.5 deck height) and the 302W is 7.7" across (with the 8.2" deck height).
Just look at the parting line between the head and block relative to the water pump ports on the front cover. 302 is flush. 351 is an inch away. Distributor hold down boss, 302, flush, 351 an inch below the valley gasket surface. Don' need no steenkin tape measure....
The assembly line was installed in 1969 with the first engines rolling off the line in 1970, you are correct.
If the number is metal stamped on the small machined pad on the RH side front and perpendicular to the ground it is a hot test inspector's stamp. They were made to show month, day and the last two numbers of the inspector's 4 digit badge number. This one is a '74 casting with a May 11 hot test date, inspected by xx67
Each engine made at Windsor Engine Plant 1 was tested in one of 48 stationary hot test stands for a minimum of 6 minutes, most had >10. After timing, an inspector would check for the obvious things like leaks, etc., balancing marks (crayon green or red number on LH rear rocker cover) and timing stamp (a letter stamp below the inspector stamp), stamp it OK and pull the fuel feed.
...and learned a lot. Seems like a "Galaxie" many years and far, far away now. (get it? I kill myself). I did work there for a long time in the 70's and started engines in the HT and moved through a bunch of jobs as they became available. Ended up in engineering and processed powertrain assembly lines in 80's 90's to now for the V6 lines in Cleveland. Try to help now and again with an answer I am sure of.
I know this thread is OLD, but maybe you still check it and can give me an answer.
On the front of my 302 block, is a number stamped in to the block. The number is stamped in to the mounting boss (or what ever you'd call it) for the water pump, top right bolt hole, as you are looking from the front of the engine bay. Link to pics here:
Thanks for the response. Based on the link you sent, it appears the numbers I am talking about are the date of manufacture (most likely date of assembly).
The block in question is a D1OE-6015-AA. It carries a casting number of 1A21 (January 21, 1971). The number stamped in to that boss or ear where the water pump bolts on is 1B19E (Febrary 19, 1971 I'm thinking). But the extra digit, "E" is what is throwing me off.
I'm not doing any kind of a numbers matching restoration here. It's a 1972 Bronco with a date of manufacture in November 1971.
I'm just super crazy about tracking down any and all numbers I find in my projects so I don't run in to issues down the road.
either what the final E stands for. Each foundry had internal codes for their own use....not thinking decades later that it would drive Ford fans crazy! It is a regular production line block though.
Ford's engineering & casting/foundry departments back then sometimes didn't even follow their own protocols, but this usually involved the rare XE prefixed parts (meaning experimental). Sometimes even these parts carried no numbers at all! Go figure.