block date code
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Lead Driver
Joined: Apr 2001
Posts: 6,175
Likes: 21
From: Texas
block date code
which of these is a the date code for my 428 block? And what does it tell me?
5J25
C6ME (I'm guessing thats the block cast style)
21 DIF
Anything stand out here? I just want to know a little more about what I got.
5J25
C6ME (I'm guessing thats the block cast style)
21 DIF
Anything stand out here? I just want to know a little more about what I got.
Post Fiend
Joined: Feb 2000
Posts: 5,130
Likes: 8
From: Brea CA
In the alphabet soup they skip the letter “I” so the date is Sept. 25, 1965
21 is the mold #, DIF is Dearborn Iron Foundry
C6ME is 1966 Mercury division Engine group but kind of meaningless, you see it on many FE blocks.
21 is the mold #, DIF is Dearborn Iron Foundry
C6ME is 1966 Mercury division Engine group but kind of meaningless, you see it on many FE blocks.
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