C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Engine id help please

Thread Tools
 
Search this Thread
 
Old Apr 2, 2013 | 09:28 AM
  #1  
aaroncorvette's Avatar
aaroncorvette
Thread Starter
Burning Brakes
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2009
Posts: 845
Likes: 54
From: Bangor, Northern Ireland
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
Reply
Old Apr 2, 2013 | 09:38 AM
  #2  
Easy Mike's Avatar
Easy Mike
Team Owner
Supporting Lifetime
20 Year Member
 
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Default

TDD indicates a 72 or 80 truck block; 170 or 175 hp; manual transmission.
.
Reply
Old Apr 2, 2013 | 09:39 AM
  #3  
wombvette's Avatar
wombvette
Le Mans Master
15 Year Member
 
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Default

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.
Reply
Old Apr 2, 2013 | 09:43 AM
  #4  
SuperBuickGuy's Avatar
SuperBuickGuy
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2012
Posts: 2,548
Likes: 379
From: Woodinville WA
Default

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.
Reply
Old Apr 2, 2013 | 10:42 AM
  #5  
Mike Ward's Avatar
Mike Ward
Race Director
10 Year Member
 
Joined: Jul 2001
Posts: 15,892
Likes: 42
Default

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.
Reply
Old Apr 2, 2013 | 11:24 AM
  #6  
gbvette62's Avatar
gbvette62
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2000
Posts: 12,639
Likes: 3,102
From: Shamong, NJ
Default

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.
Reply
Old Apr 2, 2013 | 11:38 AM
  #7  
Mike Ward's Avatar
Mike Ward
Race Director
10 Year Member
 
Joined: Jul 2001
Posts: 15,892
Likes: 42
Default

The 3970010 casting was discontinued in 1979-80, so that's another strike against it being from '82.
Reply
Old Apr 2, 2013 | 01:39 PM
  #8  
aaroncorvette's Avatar
aaroncorvette
Thread Starter
Burning Brakes
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2009
Posts: 845
Likes: 54
From: Bangor, Northern Ireland
Default

Thanks guys
Reply

Get notified of new replies

To Engine id help please

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-1

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski




All times are GMT -4. The time now is 11:32 PM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE