1941-42 Ford
The 1941 and 1942 Ford motors are very similar to the same year Mercury engines with the same changes compared to earlier motors: the “raised intake”, the curved outside walls of the block meeting the exhaust port flanges, and the elimination of the core plugs in the oil pan rails. These blocks can be bored 1/8 over to 239 cubic inch size so a 3.1875 bore should not be used to determine block identity.
Features of the 1941-42 Ford
- 24 studs retaining the cylinder heads
- Water pumps in the block
- The water drains are angled
- Passes the pencil test
- No core plugs in the oil pan rails
- Smoother block sides without raised looking exhaust ports
- Crankcase ventilation
- Insert main bearings 2.499” diameter retained by studs
- Upside down keystone center water hole in the deck
- Upside down keystone water hole in the lower center of the deck
Update, thanks to glennpm we now have a picture of a 41-42 Ford block. You can see the "raised intake" and upside down keystone center water hole in this picture.
