Further on hunting down a 312 Block. If you locate one, do not buy it unless you can inspect the bottom end closely, before hand!. Due to a mistake in main cap torque specs, published in 1956, many 312 blocks were cracked or the threads were stripped!  Also, some were damaged by heavy handed mechanics going beyond recommended torque specs during rebuilds. Buyer beware!!  If you do succeed in finding a good block, do not allow the assembler to use the original 1956 manual's main cap torque specs!!  I believe the current accepted "max torque" on 312 main caps is 90-95 lbs. PS.- there's a 312  block advertised in this sites classifieds about 11 days ago..


Paul

do you have a pic. and where are you located?

 lincoln/merc. y-blocks &mel's                                                               bucyrus, ohio.

I would get confirmation from S&J as to what heads will be on your engine if you go that route and the heads matter to you.  I've heard stories of engines coming from rebuilders with mismatched heads.


Mark

1956 Mercury M100
1955 Ford Fairlane Club Sedan
Delta, British Columbia

Frank, that's good preachin' !

Daniel Jessup

Lancaster, California

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

Acawa, Talk to Ted, John Mummert, or Tim McMaster. Any of them will be happy to rebuild a 292 (easier to find) for you to whatever kind of an engine you desire.
     Mummert has stroker kits that will allow you up to 340 ci. whatever you do, go to a souce familiar with Y blocks, not every one can build one correctly, or is interested in the engine. These guys all are.  


Frank/Rebop

Bristol, In ( by Elkhart) 

That's basically the combination I have in my '54 Merc and I'm very pleased. Mine is bored .060 over so I'm just north  of 300 ci, with G heads, 1.54 rockers and a cam ground to the 245hp 312 specs. I'm running stock dual exhaust manifolds, a 460 cfm Holley and a C4 trans. The car cruises effortlessly with this combination and acceleration is instant and impressive. Sounds great too. I've had four barrel Mustangs and Cougars with 289, 351W and 390 engines and none of them felt better than my old Y-block Merc.  It's a point of pride to me that this vintage engine is so satisfying, and reliable.


Marc

'54 Merc ragtop

Pt Townsend, WA   

                                                                                                                                   

I wouldn't get hung up on a 312.  A 292 with the right cam, "G" (57)  heads, will provide plenty of power.  Assuming it will need a clean up overbore, .030 will give you close to 300 cubic inches.


54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

According to NAPA, the engine codes of C1545A 6H22A point to a 292 or a 302 out of a 1965 Galaxy dressed as a Thunderbird.  It works fine but it isn't correct and I'd like to put together a powerful engine (within reason) as part of the restoration.  Decided the wagon should have a strong sound and available power which will never actually get used as it will be restored with stock components.   The rear seems to be the original 9" and the 3-on the tree was moved down to the floor where it will stay.   Putting in new springs/shocks rated for the 312 and plan for the interior to be restored to factory while the exterior will be non-stock colors.

The people at S&J Engines will sell me a re-manufactured engine less all the accessories, etc that I'll have to find somewhere.   Have only restored an engine in the bay before.
https://www.sandjengines.com/rebuilt-engines/Search/FOR-312LB
Since I'm not mechanically inclined, its good that they will have done the hard part and that I can read and follow directions fairly well.
They are willing to insert whatever CAM I come-up with so with some research, I can get more than stock torque out of this.

Just how difficult will it be to put this together assuming I know a travelling mechanic who can help mate the engine to the flywheel when the time comes?
Got the engine hoist, stand, room and probably most of the tools and I'm in no hurry as the car has an engine already.

I know it would be easier to hire someone but that just misses the whole reason for doing this.

Any suggestions would be welcome

Lorena, Texas? I lived in Lorena for a short while a few years back. Interesting........

I have a complete (apart) 312 short block. It contains the block, crank, rods, pistons front cover cam and gears, water pump, oil pan and pump plus some other small stuff. I want $500.00 for it plus shipping or you can pick it up.

You could purchase a complete used 292 for the heads and all the bolt ons and assemble the 312.

Brian Perrenot" BPerrenot@hotmail or 281-687-1071