I may have a 312 but I am not a sure yet. The engine is in my 1964 F350 and the guy I bought the truck from claimed it has a 312 in it. I think the block casting number is correct for a 312 (ECZ-6016 C) and it has a raised dot on the crank flange, but I will not know for sure until I pull the oil pan. The heads are (C0AE) heads and rocker arms are low ratio (5751066). After reading about the 312 I have decided that it may not be a suitable engine for a truck so I will most likely sell/trade it and try to get a “FE” or "FT" to put in the truck.

   The engine runs but needs to be rebuilt. I know the engine is rare but I am unsure what the engine is worth. So if it were a 312 would anyone be interested in it?

how far are you from Winchester, VA

Daniel Jessup

Lancaster, California

aka "The Hot Rod Reverend"
check out the 1955 Ford Fairlane build at www.hotrodreverend.com

yes, i would be interested.let me know .. thanks

I live close to Austin, Texas.

Is the dot on the crank definitive or will I need to pull the pan and check the main caps?

What can I expect to get for the 312?

all I want/need is the crankshaft - any way that you are willing to let that go separately?

Daniel Jessup

Lancaster, California

aka "The Hot Rod Reverend"
check out the 1955 Ford Fairlane build at www.hotrodreverend.com

The Dot will be in a flat notch & will be short, but about 5/16" in diameter. However, as I understand it there were also some 272 or 292 cranks with a single dot but they were narrower than 5/16". Check closely! If not sure, pull the pan & look for ECZ marked rods. Those Heads were only found on 1960 292 & 312 (Merc) engines with a 2 Bbl carb. They have the smallest intake valves & are not desirable.

Paul

As Paul mentions, the raised ‘dot’ needs to be 5/16” diameter to be a 312 crankshaft.  If it’s ¼” or smaller, then it points you back to the 3.3” stroke or 272/292 crankshaft.  No dot at all can point to either stroke on the crankshaft.  Main cap identification can also help to verify what you have.  If the heads are off, then checking how far the piston is down in the bore at BDC versus the measurement at TDC can also help to clarify which stroke you have without pulling the oil pan loose.

Lorena, Texas (South of Waco)

I am uncertain as to why you say it will be unsuitable for a truck? as I have been told numerous times by people all over the country, that ran Cement trucks, they said a 292 was the best pulling and strongest engine they ever had in a truck.

If you don't want it Ted is nearby you, bring it down to his place. He may even have an FE to trade you for it.

55 Vicky & customline

58 Rack Dump, 55 F350 yard truck, 57 F100

59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?