merc engine?
 

I just paid $100 for a running flathead for my 49' f-1.
It has EAC cast into the head which means it is a mercury right?
Did ford put 255's in the bigger trucks fom the factory?
It is out of a 1952 f-4.
I didn't check the stroke yet to verify if it is 4".

thanks,

John

76' f-100
49' f-1
52ish f-1

merc engine?
 

[updated:LAST EDITED ON 08-Aug-02 AT 00:19 AM (EST)]EAC on the heads means it has 52/3 merc heads. Only way to verify you have a merc flatty is to pull a head and measure the stroke.

'52 F4's only had the 239 flathead as the V8 option. Not until you got to the BIG trucks did you have a different engine - then they were 279 (F7) and 317 (F8) OHV motors.

Swapping a merc motor into a farm truck for extra torque was fairly common. I picked one up from a 46 Ton 'n a half.

Check the passenger rear corner of the intake flat for an alhpa-numeric string of symbols that will tell you what year it was assembled. If it has been rebuilt, then all bets are off.

Keeping my fingers crossed for you.....
Tim

merc engine?
 

I took the heads off tonight.
I am very happy to say that it does have a 4" stroke!
It is standard bore!
Everything looks great inside!
And there are no cracks between the cylinders!!!!!!!!!!!
I may even give my friend an extra $50 for giving me such a great engine for such a great price.

Now on to re-building it.

Also is ther any benifit in putting 8ba heads on it (ie. higher compression since the stroke is less on a 239) I have a set of off my other junk motor. Also if anyone wants the crankshaft out of the junk motor they can have it for very cheap since I don't need it now.


Thanks,

John

merc engine?
 

You might want to find a set of 8RT heads if it is a Canadian built Merc motor. They are the standard heads for Canadian Merc truck motors according to my 1950 Mercury truck owners manual.

merc engine?
 

[updated:LAST EDITED ON 04-Sep-02 AT 01:24 PM (EST)]I'm not sure if the 8BA heads will give a compression increase over the EAC heads. The '52/'53 car heads ( don't know the casting code ) would bump it up a little.

merc engine?