Serial on intake
Elder User
Joined: May 2002
Posts: 526
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From: Sin City, USA
Originally Posted by abelmoreno
Hello everyone,
Can anyone help me decode this number cast on the intake manifold of a 4V 351C?
D3ZE9425AA
Thanks!
Can anyone help me decode this number cast on the intake manifold of a 4V 351C?
D3ZE9425AA
Thanks!
Z = Mustang
E = engine part
9425 = intake manifolds
AA = 1st design (A) with first revision (A)
Thread Starter
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Senior User
Joined: Feb 2004
Posts: 236
Likes: 0
From: Guayaquil
Is it true that the 73 351C-4V doesn't have valves as large as the other Clevelands? If this is true, Should I be disappointed? (I kind of am to be honest with you! I had known this before, I would've looked for another cleveland!!!!)
Here's what I found online:
"Note: Beginning in early 1973, many 4V head castings were fitted with smaller valves (2.04" / 1.65") - the same as those used in the 351C-2V. There's some debate as to whether Ford made this change across the board in 1973 or if some 1973 engines were built with full-size (2.19"/ 1.71") valves. If you're going to the trouble to upgrade to 4V heads, a safe bet is to use one of the two basic types (open, closed) manfuactured in 1970, 1971, or 1972. Always measure the valve diameters. Look for pre-1973 casting numbers beginning with D0, D1, D2, and steer clear of D3 (e.g. D3ZE casting number) unless you can actually measure the valve diameter."
Here's what I found online:
"Note: Beginning in early 1973, many 4V head castings were fitted with smaller valves (2.04" / 1.65") - the same as those used in the 351C-2V. There's some debate as to whether Ford made this change across the board in 1973 or if some 1973 engines were built with full-size (2.19"/ 1.71") valves. If you're going to the trouble to upgrade to 4V heads, a safe bet is to use one of the two basic types (open, closed) manfuactured in 1970, 1971, or 1972. Always measure the valve diameters. Look for pre-1973 casting numbers beginning with D0, D1, D2, and steer clear of D3 (e.g. D3ZE casting number) unless you can actually measure the valve diameter."
Elder User
Joined: May 2002
Posts: 526
Likes: 0
From: Sin City, USA
Originally Posted by abelmoreno
Is it true that the 73 351C-4V doesn't have valves as large as the other Clevelands? If this is true, Should I be disappointed? (I kind of am to be honest with you! I had known this before, I would've looked for another cleveland!!!!)
Here's what I found online:
"Note: Beginning in early 1973, many 4V head castings were fitted with smaller valves (2.04" / 1.65") - the same as those used in the 351C-2V. There's some debate as to whether Ford made this change across the board in 1973 or if some 1973 engines were built with full-size (2.19"/ 1.71") valves. If you're going to the trouble to upgrade to 4V heads, a safe bet is to use one of the two basic types (open, closed) manfuactured in 1970, 1971, or 1972. Always measure the valve diameters. Look for pre-1973 casting numbers beginning with D0, D1, D2, and steer clear of D3 (e.g. D3ZE casting number) unless you can actually measure the valve diameter."
Here's what I found online:
"Note: Beginning in early 1973, many 4V head castings were fitted with smaller valves (2.04" / 1.65") - the same as those used in the 351C-2V. There's some debate as to whether Ford made this change across the board in 1973 or if some 1973 engines were built with full-size (2.19"/ 1.71") valves. If you're going to the trouble to upgrade to 4V heads, a safe bet is to use one of the two basic types (open, closed) manfuactured in 1970, 1971, or 1972. Always measure the valve diameters. Look for pre-1973 casting numbers beginning with D0, D1, D2, and steer clear of D3 (e.g. D3ZE casting number) unless you can actually measure the valve diameter."
As for your previous question, yes there are many differences between the various Clevelands offered from 1970-1974. 2V motors stayed pretty much the same. The 4V motors could be had with several different intakes and carb combos, mechanical and hydro cams, dual point and single point dizzys, and closed chamber heads (70-71) or open chamber heads (72-74). If you look around on the web, there are several sites that list the various differences between the H, M, R, Q code engines built from 70-74.
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Senior User
Joined: Feb 2004
Posts: 236
Likes: 0
From: Guayaquil
So, does that mean that my engine is not as good as other clevelands? What advantages does mine have?
Being the valves smaller, low end torque would be higher right?
I guess what I mean is, what advantages does my engine has to offer against other clevelands.
Being the valves smaller, low end torque would be higher right?
I guess what I mean is, what advantages does my engine has to offer against other clevelands.
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Elder User
Joined: May 2002
Posts: 526
Likes: 0
From: Sin City, USA
Originally Posted by abelmoreno
So, does that mean that my engine is not as good as other clevelands? What advantages does mine have?
Being the valves smaller, low end torque would be higher right?
I guess what I mean is, what advantages does my engine has to offer against other clevelands.
Being the valves smaller, low end torque would be higher right?
I guess what I mean is, what advantages does my engine has to offer against other clevelands.
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Senior User
Joined: Feb 2004
Posts: 236
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From: Guayaquil
Ok, I finally got to see the number cast on the block by the starter.
Number is: D2AECA
3L12
Bear in mind that the intake number is D3ZE9425AA
Could it have been changed? Does the block production year define the kind of heads I have and not the intake?
Thanks
Number is: D2AECA
3L12
Bear in mind that the intake number is D3ZE9425AA
Could it have been changed? Does the block production year define the kind of heads I have and not the intake?
Thanks
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 4
From: Delaware
Originally Posted by abelmoreno
Ok, I finally got to see the number cast on the block by the starter.
Number is: D2AECA
3L12
Number is: D2AECA
3L12
This could have been in a '73 Model year Mustang with a 4V carb.
Elder User
Joined: May 2002
Posts: 526
Likes: 0
From: Sin City, USA
Originally Posted by abelmoreno
Bear in mind that the intake number is D3ZE9425AA
Could it have been changed? Does the block production year define the kind of heads I have and not the intake?
Thanks
Could it have been changed? Does the block production year define the kind of heads I have and not the intake?
Thanks
Thread Starter
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Senior User
Joined: Feb 2004
Posts: 236
Likes: 0
From: Guayaquil
Ok, I opened that baby and it is is in great condition, it's a 73 and came with the valves the same size as the 2V heads, even though it is a 4V... 2 bolts mains 
Open chamber.
Any comments on the motor mounts to put the Cleveland in my 1988 F-250 with a stock 4.9L 300?
Having the smaller valves won't produce more low end torque?
Open chamber. Any comments on the motor mounts to put the Cleveland in my 1988 F-250 with a stock 4.9L 300?
Having the smaller valves won't produce more low end torque?
Elder User
Joined: May 2002
Posts: 526
Likes: 0
From: Sin City, USA
Originally Posted by abelmoreno
Ok, I opened that baby and it is is in great condition, it's a 73 and came with the valves the same size as the 2V heads, even though it is a 4V... 2 bolts mains Open chamber.
Any comments on the motor mounts to put the Cleveland in my 1988 F-250 with a stock 4.9L 300?
Having the smaller valves won't produce more low end torque?
Open chamber. Any comments on the motor mounts to put the Cleveland in my 1988 F-250 with a stock 4.9L 300?
Having the smaller valves won't produce more low end torque?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
Originally Posted by abelmoreno
Hello everyone,
Can anyone help me decode this number cast on the intake manifold of a 4V 351C?
D3ZE9425AA Thanks!
Can anyone help me decode this number cast on the intake manifold of a 4V 351C?
D3ZE9425AA Thanks!
D2AE-CA = Casting numbers on bare blocks cannot be transposed to actual part numbers.
While the Z in a Ford engineering or casting number means Mustang, that doesn't mean the part it's on was used only on a Mustang. It might have been used on any car or truck from the time period.
351C bare blocks: D0AZ-6010-C .. 2 bolt main caps = 1970/74 / D1ZZ-6010-D .. 4 bolt main caps = 1970/74 (D1ZZ is an updated p/n)
Magnaflux that block! Ford 351C 4V blocks were subject to sand casting problems. Ford sent the dealers a campaign letter and a part number that could be used to repair them. The part number was for a Metallic Filler Kit that was to be poured into the sand casting holes. I'm not kidding = C6AZ-19554-A .. Metallic Filler Kit ~ Composed of: 1 can-metallic resin, 1 jar-hardening agent.
Last edited by NumberDummy; Nov 3, 2007 at 12:58 AM.