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Bruce Lancaster · 10-09-2017, 02:48 PM

And I mis-arranged my notes...The so-called raised service was '41-WWII, the side ridges down to the plugs (on the pan rails of block) was '39-40.
You need to remove a head to spot whether 221 or 239; The arrangements of water holes at center will settle this even if it's a 221 bored to 239!
'39-40 239 generally had the "99" designation stamped in 1/4" characters at right front of the block's upper service. Obviously easy to fake IF anyone is profiting by telling you it'd a Mer.

10-09-2017, 02:48 PM	#19
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: What year is this V8 flathead engine? And I mis-arranged my notes...The so-called raised service was '41-WWII, the side ridges down to the plugs (on the pan rails of block) was '39-40. You need to remove a head to spot whether 221 or 239; The arrangements of water holes at center will settle this even if it's a 221 bored to 239! '39-40 239 generally had the "99" designation stamped in 1/4" characters at right front of the block's upper service. Obviously easy to fake IF anyone is profiting by telling you it'd a Mer.