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engine i.d !!!have casting numbers!!!

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Old Jan 6, 2008 | 04:18 PM
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From: fallbrook ca.
engine i.d !!!have casting numbers!!!

ok ive got an f250 4x4 hiboy

passenger side head number: c4ae
drivers side head number: c4aeg
block number : 05aza

hope this helps!
 
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Old Jan 6, 2008 | 04:23 PM
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From: St George, SC I-95
360FE was the only engine offered in 73-77 F250 4x4s. The bad thing is that 390s share the same block and heads and are impossible to determine visually from a 360. The only way to tell without disassembling the motor is pull a spark plug with the piston at BDC and use a CLEAN dowell or something to measure the length. Post your findings.


That block number is 99.999% C5aza not O5aza.
 
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Old Jan 6, 2008 | 04:44 PM
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From: fallbrook ca.
the only unexplainable thing is it has merc valve covers, so im not sure if its the original engine.heres a pic



 
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Old Jan 6, 2008 | 04:49 PM
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From: St George, SC I-95
Thats deffinately a FE engine. 360 390 410? Very tough to say. Merc used 390s and 410s in the mid 60s (C4 and C5 part numbers) 360s were factory and were only offered in 73-76 Ford trucks I think.

Without checking a smart man would say 390. Ford made millions of them and they were cheap. It was also a very common swap.
 
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Old Jan 6, 2008 | 04:51 PM
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it has a 2v carb on it i doubt its anything bigger than a 390
 
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Old Jan 6, 2008 | 04:59 PM
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From: St George, SC I-95
very true they did have 4bbl intakes/carbs. I doubt it would be a 410 anyway because from what Ive seen they are quite rare compared to 390s
 
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Old Jan 6, 2008 | 06:04 PM
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You have yourself a 352 or 390 judging by a C5 casting code. Gotta measure the stroke.

Josh
 
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