Block Casting numbers
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Mountain Pass
Joined: May 2003
Posts: 232
Likes: 16
From: Milwaukee USA
Block Casting numbers
I've got a string of engine block casting numbers that I'm not sure I understand correctly. The number are the following format as they appear on the block
D2OE - 6015 - AB
3512
It's in a 73 F100 and it's a 302. That's about all I'm sure of. I'm guessing that it is not the original engine based on the code. That actually is not my main issue - I'd really like to figure out whether this is one of the infamous 73-76 blocks with the 8.229 block height before I go have it milled off to 8.206. With a bare block, what is the best way, for someone like me at home, to be able to fairly acturately measure the block height?
D2OE - 6015 - AB
3512
It's in a 73 F100 and it's a 302. That's about all I'm sure of. I'm guessing that it is not the original engine based on the code. That actually is not my main issue - I'd really like to figure out whether this is one of the infamous 73-76 blocks with the 8.229 block height before I go have it milled off to 8.206. With a bare block, what is the best way, for someone like me at home, to be able to fairly acturately measure the block height?
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Mountain Pass
Joined: May 2003
Posts: 232
Likes: 16
From: Milwaukee USA
Well that's what I thought but according to info i could find on the web - that first set of 4 characters suggests a 72 but then the ending 4 character translates out to July 12 of 73 so I'm all confused - I think I'm going to take an impression in clay to make sure I'm not reading something wrong. the grease and dirt might be hosing me up.
Posting Guru
Joined: Nov 2003
Posts: 1,230
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From: East Flat Rock NC
The 72 is the casting and could be the factory one but most truck castings
ive came across has a (T) in them like D6Te- but I have found very odd
exceptions to the rule!
ive came across has a (T) in them like D6Te- but I have found very odd
exceptions to the rule!
Last edited by Pro-Street/StateTK; Mar 7, 2005 at 01:12 PM.
Hotshot
Joined: May 2003
Posts: 11,141
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From: south louisiana
The D2OE-6015-AB is the casting #. The other numbers you posted are the date code. The date code tells you exactly what year/month/day it was actually cast. The casting # only tells you when the part was engineered and even though it suggests that it's a 72 block, it could have been installed in vehicles after 72, up to the end of that particular part's end of production, which could be years after 1972. Take for instance the E7TE small block heads. These were in production up till the last 5.0's and 5.8's were installed in pickups and vans in 1997, but still carried the same E7TE casting number.
Senior User
Joined: Nov 2004
Posts: 166
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From: Tucson, AZ
look at the 3512 number a little closer...most ford casting dates have a letter as the second character which equates to the month the part was produced. bad dad is correct about engineering number being around for a long time. the connecting rods in the 90 5.0 engine i just rebuilt had c8 engineering numbers.
measuring .020 around the house is tough without the proper equipment. if the block is going to the machine shop, ask them to measure before milling. .020 difference in deck height can spell disaster if the wrong pistons are used and will change compression more than one would guess. cheers, garsten
measuring .020 around the house is tough without the proper equipment. if the block is going to the machine shop, ask them to measure before milling. .020 difference in deck height can spell disaster if the wrong pistons are used and will change compression more than one would guess. cheers, garsten
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