Can Anyone I.D. This Flathead

[1934calkid]

Can Anyone I.D. This Flathead ? its is definitely a 49 to 53,it has NOT been bored and has a 3 3/16 bore with a slight lip from the rings on top of the cylinder bore, clean valve springs but it is stuck, so we cant measure stroke yet. and idea from the pictures ? there also seems to be some green original paint on it also, any ideas ? thanks

[Tony, NY]

1CM is 1951 Merc. Paint color is Merc, too (I believe).

[Fredb_]

I guess I'm looking at the rear camshaft cover plate. I have found those 1CM numbered plates on several Ford V8 motors even though it sounds like a Merc number.

[1934calkid]

thanks tony..........

[flatjack9]

Looks like the crankshaft is out. Why can't you measure the stroke?

[1934calkid]

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How do we measure the stroke if crank is out ? And piston are stuck ?

[rotorwrench]

With the crank out you can measure the counterweight cheeks. Mercs are near 6-inches across and Fords are 5 1/2-inches. It seems like the cam gear covers were made for clearance on the automatic transmissions so either Ford or Mercury might have that cover. It has truck water pumps and many of the later pickup engines were green.

[4tford]

http://www.flatheadv8.org/boomer/crank.htm an article I wrote a few years ago

[skidmarks]

Size of the oil plugs in the crank is another way to figure out if its ford or mercury. But I have been told thats not always true.

[1934calkid]

You guys are all geniuses ! I never would have thought of measuring a counterweight ! Now if I only had the crankshaft that was originally in the block ! Lolololol.......no crank.....

[Mike B]

Originally Posted by 1934calkid

You guys are all geniuses ! I never would have thought of measuring a counterweight ! Now if I only had the crankshaft that was originally in the block ! Lolololol.......no crank.....

Then it's really just a standard bore FH, why would it matter it matter to be ID'ed?

[flatjack9]

So the stroke will be whatever you want.

[Ol' Ron]

Note! Canadian Nerc 4" cranks had the small clean out plug in most of them. Second the blocks were all the same for cars and trucks. However, early blocks had hardened seats in the exhaust up to mid 51, after that they had rotators on the valves.

[1934calkid]

Just curious I guess ???

[Bruce Remington]

I worked in an engine shop for many years, did all the model A's and the v8 flatheads, did hundred's of em. Best job in the shop. The block IS a Merc block.
Bruce Remington

[rotorwrench]

The block IS an 8BA block. There is no difference in the blocks. The only exception is whether it is late with no exhaust stellite seats or early with stellite seats

[V8COOPMAN]

Originally Posted by Bruce Remington

I worked in an engine shop for many years.................. The block IS a Merc block.
Bruce Remington

Hey Bruce......Welcome to the 'Barn. You seem to be pretty adamant in your statement about this being a MERCURY block. As rotorwrench aludes-to above, both Ford and Merc blocks '49-'53 are identical. I'm curious as to what you're basing your belief ("block IS Merc") on? DD

[tubman]

It seems to have Merc water pumps.

[34PKUP]

Originally Posted by tubman

It seems to have Merc water pumps.

Nope! Looks like Truck pumps circa 48' and up.

[Binx]

Originally Posted by 1934calkid

Now if I only had the crankshaft that was originally in the block ! Lolololol.......no crank.....

Crap! I was hoping for a 4" Merc crank outcome! I love those stories!


Lonnie