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Old 11-05-2009, 09:23 PM   #1
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engine decoding help!

i just picked up a 1972 351w for free today and i tore it apart and it it surprisinly clean i pulled a tag off the motor and it reads
351 W 72 8
D 12 K 205 - S will this tell mne anything about this engine or do i need to find the block numbers?
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Old 11-05-2009, 10:02 PM   #2
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Re: engine decoding help!

The tag should be the block identification. I did have a book on small block Ford engines but it is at a friend's house. Off the top of my head, from what I can remember:

The 351 W 72 I'm sure stands for the engine's cubic inch (351 ci), the plant it was cast (W- windsor), the year (72 - 1972). The 8 could be the number of cylinders. But this is just using deduction.

The actual Ford part # will be four alphanumerics. Possible beginning with a D
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Old 11-05-2009, 10:05 PM   #3
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Re: engine decoding help!

its dark out and late so ill get the numbers tomorrow and im also wondering what can i do to put power in the motor without a supercharger and heads cause again im super limited on cash and dont have much to spend
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Old 11-05-2009, 10:32 PM   #4
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Re: engine decoding help!

If you are going to rebuild it, you may want to do it right by going forged internals. This will be good too in case you decide to go forced induction or nitrous.

Heads and cams you will really want to do to get a lot of power.
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Old 11-06-2009, 01:03 PM   #5
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Re: engine decoding help!

im thinking rebuilding a set of 302 heads for added compression and drilling out the bolt holes but questionable about the compressiong thing and i have the block numbers there
02AE-6016-8A-18 and um about 75 percent sure there right except for the last 2 numbers
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Old 11-06-2009, 10:04 PM   #6
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Re: engine decoding help!

alright i figured part of it out the first 4 numbers are D2AE standing for
D= 1970's
2= 1972
A= idk need to find this out
E= Engine
and 6016 should probly be 6015 standing for an engine but if anyone could help me out on the 3rd digit in the block code id be really thankfull
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Old 11-09-2009, 12:01 AM   #7
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Re: engine decoding help!

The third marking is the car line, A - Ford (and FWIW Z - Mustang).

For anyone's future reference:

1st Digit: Decade
A - 1940-'49
B - 1950-'59
C - 1960-'69
D - 1970-'79
E - 1980-'89

2nd Digit: Specific Year of Decad
Last digit for the year, i.e. E2xx would be 1982

3rd Digit : Car Line
A - Ford
D - Falcon
G - Comet, Montego, Cyclone
J - Marine & Industrial
K - Edel
M - Mercury
O - Fairline, Tori
S - Thunderbird
T - Truck
V - Lincoln
W - Couger
Z - Mustang

4th Digit: Engineering Department
A - Chassis
B - Body
E - Engine

Service Part# replace the fourth digitfor the following divisions:
X - Ford Division
Y - Lincoln-Mercury
Z - Original Muscle Parts
M - Ford Motosports SVO.

6015 is the basic part number which is the same for all pieces. So all engine blocks will carry the 6015.

Any set of letters after this indicates a revision of the design process. "A" usually indicates the original design. Going through the alphabet for each revision. The letter "I" is not used however to avoid confusion with either the number "1" or the lower case letter for "L". After "Z" Ford doubles the letters so after "Z" the next revision would be distinguished as "AA" than "AB" and keeps continuing up and beyond even three letters ("AAA", "AAB"...).

There should also be a casting date code, probably by the starter on this engine. It's in the format of number-letter-number-. The first number is the specific year of the decade (decade from the first numeric of the casting number; this is supposed to be a fool-proof feature), the letter is the month starting with A = January, and the last two numbers is the actual day. If this is casted onto the block then this was the day the block was casted. If this code is stamped or inked onto the block than it was the date of manufacture or assembly. If any work has been done to the engine than this number is usually milled off and may or may not be replaced with a new set of alphanumberics.
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Old 11-09-2009, 09:01 PM   #8
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Re: engine decoding help!

do you know about the head idea like changing them out for more compression?
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Old 11-09-2009, 10:51 PM   #9
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Re: engine decoding help!

Can't say that I do but it should be a matter of changing the cylinder volume i.e. changing the combustion chamber volume.

Combustion ratio is the volume when the piston is at the bottom of its stroke and when the piston is at the top of its stroke. Let's say the cylinder has 900cc plus 100cc for the combustion chamber for a total of 1000cc when the piston is at its lowest point. When the piston rises to it's highest point it only leaves the 100cc in the combustion chamber than the ratio becomes 1000:100 which is the same as saying a 10:1 compression.

Knowing this you can change the volume by changing the volume in the cylinder heads.
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Old 11-10-2009, 01:05 PM   #10
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Re: engine decoding help!

alright thanks that cleared the compression thing up
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