What markings etc are cast or stamped on the cosworth 205 block

 

A "Cosworth" block is a Pinto block, only difference is by the water pump, if genuine it will have 'YB', followed by a number.

Also by the dizzy there will be four numbers, these denote the bore tolerances, Cosworth asked that only grade 2 (and maybe 3 from memory) be delivered to them, so you want to see like 2222 for example, once rebored this is irrelevant anyway!

Martin

 

The above is bang on.

 

it says 2222 next to dizzy

 

Then that is a 'selected' block, it should also have 'YB' followed by a number, stamped at the front of the block?

Martin