Ford block I.D

idt-572 · Sep 20, 2019

I found 2 blocks, EONN6015AA AND C7NN6015R.

Can someone tell me what they are?

And will they work in a early 5000 ford? They look like the one in my tractor but with a bigger bore.

Bern · Sep 20, 2019

All I can tell you for sure is that the E0NN is 1980 or newer, and the C7NN is 1967 or newer.

Take a tape measure and measure the bore. If it's almost 4 1/2", it won't work on an earlier 5000 with 4.2"
pistons. If it's closer to 4 1/4", then it *might* work. At that point you'll need to get out some more
precise measuring tools to see if the block you have has been bored out or not. You'll also need to see if
the pistons you have are standard or oversize.

Sean in PA · Sep 20, 2019

A Google search on E0NN6015AA says that it was used in the 5610, which would make it a 256 ci with 4.4" bore x 4.2" stroke, the same as the later 5000. The earlier 5000 (prior to 4/1/68) had a 233 ci with 4.2" bore x 4.2" stroke.

C7NN6015R looks to be a later 256 ci 5000 block.

idt-572 · Sep 24, 2019

(quoted from post at 19:30:14 09/20/19) A Google search on E0NN6015AA says that it was used in the 5610, which would make it a 256 ci with 4.4" bore x 4.2" stroke, the same as the later 5000. The earlier 5000 (prior to 4/1/68) had a 233 ci with 4.2" bore x 4.2" stroke.

C7NN6015R looks to be a later 256 ci 5000 block.

Thanks Guys..........

Ford block I.D

idt-572

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Bern

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Sean in PA

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idt-572

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