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Engine id help please

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Old Apr 2, 2013 | 09:28 AM
  #1  
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Default Engine id help please

Engine id help please

I've tried this a few times and come up with something different everytime

It's the 350 in my Dad's Stude, stroke has been confirmed at 3.48 and it's 4 bolt mains.


Cheers.

V0303TDD
C80119326
3970100
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Old Apr 2, 2013 | 09:38 AM
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TDD indicates a 72 or 80 truck block; 170 or 175 hp; manual transmission.
.
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Old Apr 2, 2013 | 09:39 AM
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Originally Posted by aaroncorvette
Engine id help please

I've tried this a few times and come up with something different everytime

It's the 350 in my Dad's Stude, stroke has been confirmed at 3.48 and it's 4 bolt mains.


Cheers.

V0303TDD
C80119326
3970100
'72 or '80 350 depending on the casting date.
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Old Apr 2, 2013 | 09:43 AM
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you put the wrong casting number.... the right casting number is 3970010 (I actually have that number memorized because I use them so often). It is a 4 bolt main 350 (truck motor generally). Now, with that said, I've seen early motors 68/69 in Chevelles that were 2 bolt mains with that casting number... fortunately, you don't have that one....
good foundation.

to continue the decode - the number V0303TDD, V Flint michigan casting plant - 0303 is the casting date but I think you have it wrong.... maybe it's D303? The first letter is the month A=Jan, B=Feb, etc.... so your block was probably installed in the truck on April 3, 1973. TDD - is what the vehicle it went into - truck sounds right; but the book I use and I are at least 200 feet apart... and it's cold outside.

C80119326.... is the last numbers of the VIN the motor was originally in.

Last edited by SuperBuickGuy; Apr 2, 2013 at 09:56 AM.
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Old Apr 2, 2013 | 10:42 AM
  #5  
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Originally Posted by aaroncorvette

V0303TDD
C80119326
3970100
V0303TDD

V= Engine assembled at Flint |MI engine plant

0303= This is not the casting date, engine assembled on March 03. Year not included in assembly date.

TDD= 1972 or 1980 light truck, depending on casting date found at the rear of the engine

C80119326= Vehicle VIN derivative



But you already know all this ............

https://www.corvetteforum.com/c3-tec...-51-stude.html

Last edited by Mike Ward; Apr 2, 2013 at 10:46 AM.
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Old Apr 2, 2013 | 11:24 AM
  #6  
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The VIN derivative, doesn't seem to fit, with either possible TDD engines.

If it was based on a 72 or 80 VIN, they were 13 digits long. In that case, the "C" would indicate that vehicle assembly plant was either South Gate CA, or Lansing MI. I don't think that either of those plants, ever built trucks.

If it was from an 81 or later vehicle, it would have been a 17 digit VIN, which would fit better with the 9 digits of OP's VIN derivative. Under this scenario, the "C" would indicate 1982, and the next digit "8", would be the Shreveport LA assembly plant. This would make more sense, since Shreveport was a truck assembly plant, but there is no TDD engine suffix, for the 1982 model year.
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Old Apr 2, 2013 | 11:38 AM
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The 3970010 casting was discontinued in 1979-80, so that's another strike against it being from '82.
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Old Apr 2, 2013 | 01:39 PM
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Thanks guys
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