Topic: engine code?

[bfsniff]

Im looking to buy a engine from a guy and he says its a 351c cobra jet and i just want to make sure it is, and he gave me the engine # and it is    OA154573.  Can anyone tell me what that number means??? 

[66GTKFB]

The number (154573) is the assembly line sequence, the 'OA' is a bit 'fuzzy'. Cobra Jets 351C were only used in 1973 and had a 'Q' as part of the VIN. It should read 'Q154573' at least. The car's build date should be around the end of November, 1972 or early December. You might wish to verify the casting date code on the block located near the block's casting part number. That date should be '2' (the year 1972), a letter 'K' (for Oct, or 'L' for Nov) and one or two numbers for the day. The letter 'J' would be acceptable but any other combination would be suspect. I do not know the casting part number.
The 'A' is not listed as being any part of engine or vehicle identification for 1973. These engine numbers were stamped by hand and my be difficult to read. Some have been documented as missing. On the positive side, the number is after the first documented 351C 'Q' code engine's build date of early Nov, 1972.
Jim

[bfsniff]

ok i toldm him to look for more numbers and he came up with

DOAEJ
9K23

can anyone tell me what that means?

thanks alot

[Soaring]

The Q code 351C was used in Mach 1's as well.  Do you know what car it came out of?   The only real way you are going to be for certain is to drop the oil pan and look for 4 bolt mains.  That would be a dead giveaway. 
Actually the Q code engines that late in the muscle car years were not much more powerful than just a 351C.  (9.2 compression ratio) They only produced something like 240 horsepower at the flywheel.  Woopty doo.....
The D0AEJ is a 1970 two bolt main engine.  For it to be a CJ, it would have to be something like D2AE-CA.   But again, the D2AE-CA was used in the regular 4V engines as well.   Ford has admitted putting 2 bolt main engines in cars that should have 4 bolt mains, and they also admit putting 4 bolt main engines in family sedans.  Go figure..   Bottom line, is that engine is a 2 bolt main engine, and not the better 4 bolt main engine populary found in Mach1's, Torinos, etc....

351W 71-74 D2AE-BA D4AE-DA /td>  4.00 see note 71-73 deck is 9.480, rest are 9.503
351W 75-77 D4AE-AA 4.00 9.503 
351C-2V 70-74 D0AZ-D 4.00 9.206 2 bolt mains, 6 bolt bellhousing, all 351C have same motor mounts as 289-351W
351C-4V 71 D0AE-J D0AE-G D2AE-CA 4.00 9.206 2 bolt mains
351C Boss 351C-71 CJ, HO 72-74 4V 72-74 D2AE-CA 4.00  9.206 4 bolt mains

[66GTKFB]

I'll yield to Glen. In my second source, they list 351C 'Q' code engines for 1971 and 1972 as well as 1973. In my third source, they list only 1971 and 1973 with 1972 351C as an 'R' code engine. Your engine casting, D0AE J (p/n is D0AE-6015-J), and date code of 9K23 indicates a 351C cast on October 23, 1969, which would have been used in 1970 model cars. From the application chart I have, it was not exclusive to Mustangs but was also used on full size Fords, Torinos, Falcons and probably Mercury products as well. With that info, the stamping becomes clear, OA154573 is 0A154573, 1970 model year, a FULL SIZE FORD and 154573 assembly line order number. It is not a Mustang Cobra Jet.
A V O I D  T H I S  E N G I N E , unless you get the block for less than $100.
Jim

[Soaring]

I wouldn't necessarily avoid the engine, just don't buy it thinking you are getting a Cobra Jet engine.  Like I said before, the 351 C's are getting hard to come by, and parts for them are rare.  The 351W is a more versitile engine to work with, and with the right add ons can produce an incredible amount of power.  Besides, the 351 C's have top engine oiling problems.  Now, if you find either a 428 or 429 CJ, you will have a sit your ass back in the seat motor.  The 1970's engines are not the muscle car engines of the late 60's.  Rethink your purchase options.

[bfsniff]

ok thank you so much for the info!

[Soaring]

ok thank you so much for the info!

You are welcome.  Hang around this forum and be a contributing member.  We are friendly on here. 

[sbr2win]

Hi guys,

I'm a newbie on here myself living in Australia. I purchased my dream 70 Mustang ast year from Michgan. I knew the engine was not original and am trying to track down some info about it.

I have read some reviews and documents stating a 4 digit number like 2B13 would be a 762,72,82 made on Feb 13th. However having an 8 digit number stamped at the top, back of the block was done on earlier motors that would have reflected the VIN number of the vehicle. I'm unsure what to believe.

My code is 2K176XXX (There are numbers after the 6, but though it better not to publish the lot) I believed it was a 302, but have thoughts it may be something else. Can't seem to find anything concrete either way.

Any help is appreciated.

[Jeff1967]

Hey there in down under land,

I was told yesterday by one of the California parts houses that Aussies and New Zealanders are buying up American classic cars in record numbers, I had no idea there was that much interest in our cars there?? As for publishing your engine date codes no big deal not like it is a social security number.......

JJ