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Old 11-04-2011, 05:28 PM   #1
Detector
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Default Is it a Cobra Jet engine?

Trying to tell if this is the original CJ in my Q code 73 Mach 1. Eyeballing looks to be a least a Cleveland. Has the 4 cast in the head upper corner and the water jacket for the heater hose is built into the block not the manifold. What do you think?

Staggered valves.
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Not sure what this cast number is in the head. Date the head was cast maybe?
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The 4 cast in the head near intake indicating V4.
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Heater hose/thermostat in the block.
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Old 11-05-2011, 01:32 AM   #2
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Look for the block code its under the starter that will tell you what the block is.The 4 on the head just means 4v or 4 barrel.
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Old 11-05-2011, 06:28 AM   #3
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I'm going to replace the starter today so I'll see if I can get the cast numbers.
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Old 11-05-2011, 10:13 AM   #4
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Looks like D0AE-L with a cast date of 0E22

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Old 11-05-2011, 06:53 PM   #5
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Well here is the numbers I found on the back of my engine on the drivers side block. Can't really make sense of it.

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Old 11-06-2011, 09:52 AM   #6
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You have a standard 70/71 351C, with a two bolt main.

The CJ would be D2AE-CA and have a four bolt main.
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Old 11-07-2011, 12:11 PM   #7
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Quote:
Notes on 351C Block Casting Numbers
Be careful what you read on the internet. Boss 351s were produced with at least two different casting numbers, one of which is shared with 2-bolt main, non-Boss 351C engines of the era - casting number is DOAE-L. For the Boss 351, Ford drilled this 2-bolt block to accept 4-bolt main caps. Most DOAE-L blocks have 2-bolt main caps. For the 351-4V CJ engine, many websites will tell you that the block casting number is D2AE-CA. Indeed, every 351C-CJ I've seen used the D2AE-CA block, but I've also seen this same block in 2V 351C Torino station wagons, with 2 bolts on all five caps. Again, it's a case of Ford selectively drilling blocks to accept 4-bolt main caps. So if you find a D2AE-CA engine, remove the oil pan and inspect the main caps before purchasing it.
I find a lot of different information all over the Internet LOL.
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Old 11-07-2011, 11:31 PM   #8
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Quote:
Originally Posted by Detector View Post
I find a lot of different information all over the Internet LOL.
I think the statement above is consistent with what I said.

D0AE-L = standard 351C
D2AE-CA and have a four bolt main = CJ
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Old 11-07-2011, 11:41 PM   #9
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Or drop the oil pan see if its 2 bolt or 4 bolt mains.
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Old 11-08-2011, 04:07 AM   #10
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Quote:
I think the statement above is consistent with what I said.
Agreed. I just thought it was interesting that it says the Boss 351 also could have that casting number.

Form the Boss 351 Registry:

Boss 351 block cast numbers

Cylinder Block:
Ford part Number
D1ZZ-6009-D

Block stamped number
DOAE-L

Quote:
The Earliest Date code you will find a for a stock engine would be April 1970 that would be" D "
All boss blocks that were installed in cars were DOAE the nest casting was D2ae this is one year after the cars were built . No boss 351 had screw in freeze plugs and the two bolt blocks were no weeker than the boss blocks . We were told for a matching numbers block it needed to be with in 6 weeks of the build date of the car. The D1ZE-a or D1ZE-B was a part number stamped into the blocks a long with the build date. some people confuse this with the casting number.
Picture of the block cast numbers on a 71 R code Boss 351
Attached Images
File Type: jpg Boss351castnumbers.jpg (22.3 KB, 12 views)
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Old 11-08-2011, 04:07 AM
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0e22datecodeford, 1973, 351c, bolt, casting, cobra, determine, doaeca, engine, jet, mach, main, mustang, number, numbers

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