I found a 312 from a Thunderbird from the air cleaner to oil pan, its clean and runs good and it also comes with a FOM trans. I was just wondering what would something like that be worth?

Hard to tell. Lot depends on how much you want/need it. How much is he (she) asking?

Gerald Ingram aka "Gritsngumbo"
Monroe, LA
LITTLE RED: 64 Ford F100 Short Bed Styleside
BIG RED: 63 Ford F100 Long Bed Unibody
BBW RED: 61 Ford F100 BBW Long Bed Custom Cab Unibody
BIG “UN: 63 F250 Longbed Flareside
CREW CAB: 63 F100 "Stageway" Crew Cab w/Long "Wrong" Bed

Is it still in the car? How many miles? What are you going to do with it?  

out of car no more than $200. Hear it run $300 unless you are going to do something with it such as rebuild or modify it. trans about $50-100

55Birdman  Hickory NC

It's out of the car and mileage is unknown. The air cleaner and rocker covers are worth $300 aren't they? My 57 Custom has a 272 in it now and I was thinking a 312 would be nice. The seller is asking $1000.00 and I haven't  spoke to them how firm they they are on price yet.

Thanks Randy

First off, is it truly a tbird motor? If it is and it has all of the correct tbird parts then it might be worth that much for the assembly. If it simply has tbird valve covers and they are mistakenly advertising it as a tbird motor, then I'd pay a max of $500 for the assembly and at that price, all signs would have to point to a running engine and functioning transmission. I'd still be hesitant to pay $500 if I didn't hear it running in the car and see the car move under its own power.


Lawrenceville, GA

90% of "312's" are not 312's. Anyone with a Y-block or Y-block powered car calls it a 312, because it sounds like it is worth more money.

If it truely is a 312 and truely a complete '57 T-Bird Motor it is actually worth $1000, especially if you need a complete one for a T-bird.  

The tranny is not an easy sell, so don't count it as having value.

Pat Fleischman

If it's a t-bird motor... a couple of quick things to look for; 1 inch thick spacer behind the water pump, generator mounts in front of block,not along side,  crank damper and pulley (s) are distinctly different than regular y-blocks. As for it being a 312...really hard to tell without taking the pan off or looking for the "dot" on the rear of the crank, which is hard to spot with the trans on.  Don't pay  premium $$$$$'s for it without being sure. If you don't need T-Bird specific parts, a 1000 $ is too high unless it runs fairly well.   Just my opinion ,but it seems there are more 312's for sale than were ever built. Good luck    Barry

I was researching 312's from y-block.com and block casting numbers are ECZ-6015-A,B,C,or E.

Are these numbers specific for 312's?

Those #s could also be on a 292, you would need to drop the pan and look for ECZ on the main caps. Also as mentioned earlier look for the "dot" on the flange. 

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

The casting number on the block doesn't help identify a 312. Any # used as a 312 was also used as a 292. There are some numbers that never were 312's, EBU EBV ECK ECG B5A EDB(Dearborn). I have never seen a C1AE 312 but won't swear they don't exist.

ECZ-A or B or C , EDB-E(Cleveland)  B9AE C2AE can all be 292 or 312

A real 57 312 will have the ECZ9425B intake

If you can find the right buyer for real T-Bird parts a 57 engine is worth a lot, easily 1000.00 but you have to take the time to sell them. Dizzy-400    damper-400  oilpan-200  LH exhaust manifold-175     ECZ9425B intake-125. Prices will vary but you could sell off enough to have what you want for free.

http://ford-y-block.com 

20 miles east of San Diego, 20 miles north of Mexico