56 312 and three speed


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By NewyBilt - 8 Years Ago
Anyone looking for a good running 312 out of 56 Ranch Wagon? I've been putting around 40 miles a day on it. I just installed a pertronix ignition, but think I'm going with another 4.6 swap. The three speed shifts ok, does a little pop when you take off from a stop. Has OD, but the wires leading to it are not hooked up.
By NewyBilt - 8 Years Ago
I was looking for around 600 for the combo
By Rono - 8 Years Ago
Where are you located?
By junkyardjeff - 8 Years Ago
That is just what I am looking for.
By NewyBilt - 8 Years Ago
I'm in Springfield IL
By Rono - 8 Years Ago
Too far for me....go for it Jeff!
By miker - 8 Years Ago
Not trying to cause trouble either, but if's a factory 312, it should have a T-85 0/d trans. In 56, I think the 292's were still T-86's. Google them, you'll see the difference in the side cover.
By NoShortcuts - 8 Years Ago
Yup.  Even if it was originally equipped with a 312 from the factory, that's now sixty (60!) years ago.

I'm glad that there's a group like this that appreciates this stuff.   Smile
By junkyardjeff - 8 Years Ago
I would still be interested in it even if its a 292.
By NewyBilt - 8 Years Ago
The three speed does have OD, but the solenoid has been unhooked. When the oil pan was dropped awhile back, it had the ecz main caps stamped in. From what I've read, that and a flange on the crank are about the only way to tell. And these ultra sweet badges on the front fenders.
http://forums.y-blocksforever.com/uploads/images/e56e5f55-a7ac-458f-a802-a7aa.jpg 
By carl - 8 Years Ago
56Roger (8/30/2016)
Not trying to cause trouble, but which method did you use to determine it is a 312? Those are the same valve covers that came on my automatic '56 wagon, 292, C heads, 4v with dual exhaust. Believe the 312 would have had "Thunderbird Special" decals.

But anything could have been done in the meantime.
In 1956 the 312 motors had no decal on the valve covers,they were just painted black,57 did have a decal though  Carl

By NewyBilt - 8 Years Ago
You can tell some slapped the decal on years ago. It's about an inch crooked.
By carl - 8 Years Ago
also the thunderbird emblem on the fender was on 292s and 312s,the 272s had a v8 emblem  Carl
By NewyBilt - 8 Years Ago
Carl, I feel like your in 312 denial. It's a 312 according to the caps. I was told that the 292s are more desirable at the end of the day since they can be bored and have more material around the crank. I guess the 312's like to crack around the rear main over time. I have a couple guys interested coming this weekend to slap me upside the head if I'm wrong. I'll send you a video of them doing it to satisfy you lol.
By junkyardjeff - 8 Years Ago
I am interested in the motor and trans.
By miker - 8 Years Ago
NewyBilt,

There's nothing wrong with 312 blocks. IIRC there were some bad torque values published and that is "generally" blamed for the cracked webs. All the 292 and 312's were the same castings, and I think Ford only listed .040 pistons for the 312 because of that. My 312 was sonic checked, and I only went .040 over, and shifted one bore slightly for more wall thickness. But it's a 340 CID blown stroker motor. As an aside, my 312 ran fine but needed a rebuild. The crank didn't pass mag check, it was cracked. Weird one.

Check the transmission. The T-85 o/d is worth a lot more than a T-86 o/d. Enough more to get the o/d working if it's just wiring. You can temporary it with just power and a switch. Got to do it right. And don't back up in o/d, it'll lunch the o/d. If its quiet and doesn't pop out of gear, don't give it away. Quiet is a relative term compared to modern units.

I'm farther away than Ron, so I'm not a buyer. But do your homework, and slap those guys back.

Of course, I'd rather see you keep it and rebuild it, but it's your car.
By Shaggy - 8 Years Ago
Why am i the first one to say... That belongs back in that car!!!
By carl - 8 Years Ago
NewyBilt (8/31/2016)
Carl, I feel like your in 312 denial. It's a 312 according to the caps. I was told that the 292s are more desirable at the end of the day since they can be bored and have more material around the crank. I guess the 312's like to crack around the rear main over time. I have a couple guys interested coming this weekend to slap me upside the head if I'm wrong. I'll send you a video of them doing it to satisfy you lol.
No I am not in 312 denial as I see you have proved its a 312,just wanted to point out some of the things about the 56 motors  Carl

By NoShortcuts - 8 Years Ago
NewyBilt.  You aren't really dealing with non-believers here.  Realize that a relatively small percentage of 312s found themselves in '56 Fords.  Some Forum members have previously shared the exact statistics, but I can't.  -Floating in my head is that something like 17% of '56 Fords produced came equipped with 312s.  Too, my recollection of what was shared is that the 312s in Fords were late production year cars, like April or after, IF I recall correctly.  The new '56 FoMoCo 312 engine offering were found in all '56 Mercs and MANY '56 'Birds; that is those 'Birds with automatic transmissions or 3 speed overdrive, not three speed only 'Birds in '56.

Hope this helps.   Smile  
By carl - 8 Years Ago
If the wagon came with a 312 the vin plate should have a P  code not a M  code .M code was a 292   Carl
By Outlaw56 - 7 Years Ago
So was there a happy ending to this story? Did it find a new home?
By Ted - 7 Years Ago
Pricing sounds fair for a running 312 engine.  If the main caps have ‘ECZ’ on them, then regardless of the VIN the chances are better than good that this is a 312.  I’ve even dealt with one owner cars where the history is muddy so once the car has gone through several owners, the mechanical history becomes a clean slate.
By speedpro56 - 7 Years Ago
Right on Ted.
By denny - 6 Years Ago
iam looking for drive shaft & rear end for 55 or 56 with the t85 od set up