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lucky · 06-21-2010, 06:27 AM

I know the 40 Ford blocks had sleeves, don't know if they are thicker.

What about a Z block, I have heard the blocks with a Z stamped behind intake surface are the ones to have?

marvin

06-21-2010, 06:27 AM	#3
lucky Member Join Date: May 2010 Location: Central Kentucky Posts: 43	Re: 40 Merc block sleeved from the factory? I know the 40 Ford blocks had sleeves, don't know if they are thicker. What about a Z block, I have heard the blocks with a Z stamped behind intake surface are the ones to have? marvin