I have a 302 block with the following cast number behind the starter location: 6015 AA then what looks like OJ11. Can someone decode this for me?

 

https://lmgtfy.com/?q=ford+block+identification

 

There should be 4 more digits in front of that 6015 number on your block.The block that came in 87-93 5.0 Mustangs normally has a E7TE - 6015 - xx number. However even with this number,it still wont tell you which specific year/model the block actually came out of.The only thing this number will tell you is which specific year/model this block was originally designed for.Thats the reason why every 87-93 5.0 Mustang that left the factory had the same E7TE engineering number on the block,instead of a number that designated it as being specifically for a Mustang.IOW - if the block would have been originally designed for a Mustang,the engineering number would have been E7ZE instead of E7TE since the letter Z is for the Mustang car line & the letter T is for the truck.

(E7TE-6015-AA)
1st digit= decade (E)
2nd digit= decade year (7)
3rd digit= vehicle line/model (T)
4th digit= engineering dept that designed the part (E)
5th - 8th digit= basic part number (6015)
9th - 10th digit= part revision (AA)

(E)= 80's
(7)= 7
(T)= truck
(E)= engine group
(6015)= engine block
(AA)= part revision

(Engineering Number Translation)
** 1987 Ford truck engine block **


The second number set you listed (0J11) is the date code.The date code represents the day that the part was cast at the foundry.

(0J11)
1st digit= year
2nd digit= month
3rd & 4th digit= day

(0)= 1990
(J)= Oct
(11)= 11th day

(Date Code Translation)
** Oct.11 1990 **

So if you take the info off your block & dissect it,you can clearly see that if it wasn't casted until Oct 11 1990,the block could not have been built or installed in 1987 since it wasn't cast until 1990.Thats why the engineering number represents the designed for year/model vs the installed in year/model.


If you wanna find out which exact vehicle this engine came out of,you'll have to get the 8 digit number stamped into the block on the flat pad at the top/rear of the engine block where the lower intake meets the block.A mechanics or dental mirror can be used to view it.The following was listed on a different site (MX648453) as an example of a
partial vin number and what these digits translate to.
1991 Mercury Grand Marquis LS 4-dr sedan.Full VIN is 2MECM75F2MX648453

(MX648453)
1st digit= model year
2nd digit= assembly plant
3rd digit= ??
4th-8th digit= production number

M= 1991
X= St Thomas (Canada) assembly plant
6= ??
48,453

(Partial Vin Translation)
48,453rd 1991 Mercury scheduled for production at the St Thomas assembly plant

 

thanks for the info- best help yet

 

wow wbrockstar, you are more helpful than google. that is amazing, seeing how google has been asked every question you could possible think of, as long as you know how to ask.