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I Have A Cleveland Block Standard Bore I Wish To Sell. I Am A Little Confused With The Ford "d" Blocks?? Whats The Difference And How Can You Tell. There Is One On Ebay Someone Wants $1000 For With The Casting Numbers Starting With "d". My Block Also Starts With A "d". Any Help Appreciated
 

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Hold 5
if we are talking a casting impression then brenx is the man. If we are talking about a casting number on the block, the D=1970 decade, and the next digit is year in that decade...

I.e D9XX-XXXX= 1979 option option etc. EXXX-XXXX would be in the 1980 decade

Cheers
Jas
 

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As far as i know "'D"' blocks are, as brenx said recognised by the ''d'' raised casting on the area of the block near the distributor. Most other blocks have a square instead. I,m of the opinion that these blocks are more sought after because many original early GT,s were offered with this part instead of the other block . If you are doing concourse resto on a GT then this is the block you would be looking for. I may be wrong,but thats my take on the whole subject.
 

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russxr67 said:
As far as i know "'D"' blocks are, as brenx said recognised by the ''d'' raised casting on the area of the block near the distributor. Most other blocks have a square instead. I,m of the opinion that these blocks are more sought after because many original early GT,s were offered with this part instead of the other block . If you are doing concourse resto on a GT then this is the block you would be looking for. I may be wrong,but thats my take on the whole subject.
Your right.

What surprised me about the site abovementioned was it made no reference to the different sized distributor shaft hole in the earlier and later blocks
 
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