Engine Block Casting Mark

[geordie]

I found a round casting mark on my engine block with the numbers 19758. Does this signify that the block dates from 1975 and is a V8? I know from the PO that the block is not the original.

 

[6Stang7]

no, thats not the casting number. here is what you need to look for and what it will mean.

Use this handy chart to decode all of the Ford part numbers. For example a 1968 200 6 head part number: C8DZ-6049-C

The first two digits indicate the decade and the year;
A = 40's
B = 50's
C = 60's
D = 70's
E = 80's
F = 90's
G = 00's

So the first two digits indicate that it is a "C" 60's and a "8" so that tells us it is a 68 head.

The third digit designates the vehicle model line;
A = Ford full size (Galaxie)
B = Bronco (70-75)
C = Torino/Elite
D = Falcon
E = Escort
F = Pinto, Maverick, Late model Falcon
G = Early Comet (61-68), Montego, Cyclone (69-76)
H = Medium & heavy duty truck
J = Industrial
K = Edsel
L = Lincoln (58-60)
M = Mercury
O = Fairlane (62-68), Torino (69-76)
R = Capri
S = Thunderbird
T = F series or Bronco
U = Econoline van
V = Lincoln
W = Cougar
Z = Mustang

So the third digit indicates that it "D" was off a Falcon.

The fourth digit designates the engineering group;
A = Chassis
B = Body
E = Engine

Or if it's a service replacement part;
M = Ford Motorsport or FFRP
X = Original Ford racing program/Muscle Parts
Y = Lincoln-Mercury
Z = Ford

So the fourth digit indicates that it was a "Z" Ford replacement part.

The next 4 numbers (6049) indicates the Ford "group number" for a head

The last digit "C" on the end of the part number indicates that this part was in its third revision. If revised again it would turn into a "D" and so on. When they reach the end of the alphabet they started over with AA, BB and so on as shown in this "example" part number: D7BE-6090-AB.

Our example part number C8DZ-6049-C decodes as;

C8 = 68
D = Falcon
Z = Ford replacement part
6049 = Head group part number
C = 3rd revision

 

[geordie]

I appreciate the very detailed reply. I will decode my block and let you guys know what I find.

 

[geordie]

My engine block number decodes as D4DE-6015-BA;

D4 = 74
D = Falcon
E = Engine part
6015 = Block group part number
BA = Revision

I can't visualize what a 1974 Falcon looked like. Did they make them in '74?

 

[1320stang]

No, not in the US, are you sure it's not an "O"?

 

[geordie]

I double checked the casting number last night, it's definately D4DE-6015-BA. How could this 302 block be from a '74 Falcon?

Question to 6Stang7, could there possibly be an error in your decoding instructions?