y block ID needed

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kari 613

Junior Member
I need help to ID my y block with 2 bbl carb. in my 56 Customline. Looks like B9AE- 6015f stamped on the block above the oil filter. How many Horse Power? thank you.
 
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kari 613 said:
I need help to ID my y block with 2 bbl carb. in my 56 Customline. Looks like B9AE- 6015f stamped on the block above the oil filter. thank you.
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B9AE-F blocks were used in '59 and '60 Ford cars and trucks (292 engines). Were also used in '59 and '60 Mercury 312's. To tell if a 312, you have to see if "ECZ" is cast on the main bearing caps, or by the crankshaft flange markings. Or check the stroke thru a spark plug hole.
(3.44" stroke I believe on a 312).
 
ECZ main caps showed up on 292 blocks also on those blocks. Check crank rear flange for flat spot/ one dot to see if 312 crank. John Mummert's site shows all the various crank ID's.
 
streetdreams said:
ECZ main caps showed up on 292 blocks also on those blocks. Check crank rear flange for flat spot/ one dot to see if 312 crank. John Mummert's site shows all the various crank ID's.
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I thought "ECZ" main caps were made for the larger diameter main journals on a 312 crankshaft ? How could that work on a 292 ? John Mummert's website makes no mention of "ECZ' caps on a 292.
 
the 59 B9AE used big valve heads 471 on 312 and 113 on 292.this is cast on front of heads under front of intake manifold.i have a312 crank with no dot but most do as far as finding ecz caps on 292 that's really rare.all 60 blocks had small valve heads and were COAE I believe.the 59 292 was rated at 200hp.the 60 at185.the 59 312 at 210 and 60 at 205.
 
scicala someone found ECZ caps on a 292 years ago I cant remember where.like hens teeth I would think.
 
May be because 312 was phasing out after '60. When you have an unmachined ECZ block, machining for smaller mains for a 292 is not an issue. I've seen something before speaking to this, and remember an ECZ B9AE 292 block in the past. Ford had a "magic" tag used in Engineering to direct production : Use/Exhaust . Which means you use up all remaining stock before switching to next design level. Machining surplus ECZ blocks to support 292 production requirements is well within the purpose of that tags' direction. A similar situation is guys finding 4 bolt main 429 SCJ blocks in '71 Ford wagons. Using a SCJ block to build a vanilla 429 for a wagon is better than scrapping it out.
 
streetdreams said:
May be because 312 was phasing out after '60. When you have an unmachined ECZ block, machining for smaller mains for a 292 is not an issue. I've seen something before speaking to this, and remember an ECZ B9AE 292 block in the past. Ford had a "magic" tag used in Engineering to direct production : Use/Exhaust . Which means you use up all remaining stock before switching to next design level. Machining surplus ECZ blocks to support 292 production requirements is well within the purpose of that tags' direction. A similar situation is guys finding 4 bolt main 429 SCJ blocks in '71 Ford wagons. Using a SCJ block to build a vanilla 429 for a wagon is better than scrapping it out.
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It all makes sense. I know companies do what they need to do to make money. You would think that the ECZ main caps were cast with a larger arch in the caps because of the larger 312 main journals. To me that might make them un-useable for a 292 crank. I guess not though.

So the lesson learned to me, since I've heard of odd things with the crank flange markings too (crescent and dot), is the only way to be sure if it's a 292 or 312 is to measure the stroke of the engine if it's still assembled.
 
scicala said:
It all makes sense. I know companies do what they need to do to make money. You would think that the ECZ main caps were cast with a larger arch in the caps because of the larger 312 main journals. To me that might make them un-useable for a 292 crank. I guess not though.

So the lesson learned to me, since I've heard of odd things with the crank flange markings too (crescent and dot), is the only way to be sure if it's a 292 or 312 is to measure the stroke of the engine if it's still assembled.
Click to expand...

Or if the crank is out, measure the journals. 312 main journals are larger than the 292 journals. 312 mains are 2 5/8" nominal whereas the 292 & all other Y-blocks are 2 1/2" nominal. That is if the mains have not been ground for wear.
 
we will never live to see all the odd yblock stuff.my 312 crank wasn't even cut out where the dot goes.i have a 55 truck 256 block with 3 inch main bolts and caps 1/8 inch taller than 292 caps.not as tall as 312 caps but inbetween.its a CEBY blocl which is Canadian.
 
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