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Quote:
Originally Posted by Kube
Warbird,
From what I can tell it appears to be a '38 - 40 block. Heads and water pumps can and most likely were changed in the past and as such, I tend not to use them as identifiers.
Your pumps appear to be proper '40 bodies. However, I can't quite tell if the pulleys are 1940. Regardless, and to reiterate, these can't be used to ID a block.
In 1941 the design of the block changed a bit. I can't quite tell from your photos, but it appears as if the surface is flat on the block directly below the valve chamber cover (intake manifold for you non-flathead guys). In 1941 that area appeared to be "raised", a certain indication of post 1940.
Where the exhaust manifolds bolt to the block: The block casting adjacent should "stick out" about 3/16". If it is flush in that area, the block is post 1940.
Your block appears to pass the so called "pencil test". That indicates '38 - '41.
By the way, that "56" on one cylinder head is nothing but a casting number. It identified the casting core.
I have attached a few photos that should help you.
One clearly depicts the flat surface area below the valve chamber cover.
One photo indicates the "pencil test".
One photo, perhaps two, should help you visualize the raised area at the block adjacent to the exhaust manifold(s).
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Hey Mike! (this is Britt, who's been emailing you), Thanks for the information. I tried the pencil test, but the vehicle is on an inclined driveway, so it won't stay. If it was level, it would indeed stay there:
I did look for the 81A casting on the sides of the heads, but I couldn't see it there. Eventually, I'm going to remove the fenders and radiator so I can get in there and clean everything up, repaint the engine, and check it out for more markings.
As far as the raised/flat area, here's a few more photos of the engine:
