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Porsche Factory Numbers


When Porsche built the 356, as part of the manufacturing process serial numbers were assigned to major components by stamping them in to the chassis, the engine, and the transmission. The last several digits of the chassis number was stamped into body panels and marked in chalk on other components, to be sure those items were mated to the correct body during the assembly process. The chassis, engine, and transmission numbers were (usually) recorded on the factory Kardex records which were primarily a warranty record. 

In addition to the engine numbers, Porsche numbered the case numbers of the various crankcase castings. These numbers are sometimes used to match the pieces of a crankcase or to check to see whether the stamped engine number corresponds to the correct casting for that engine series. Here is an article that describes the location of the case numbers.

356 Engine Type Identification
 
Owners are often very interested in the history of their 356 and those cars that are more unmolested are considered by many to be worth more, although misrepresentation of cars history is common due to ignorance or sometimes fraud. 

Below are a variety of information sources, including the Porsche 356 Registry's Chassis Number History. The information in this database has been accumulated over decades from many sources by multiple people. A particular car could have 0, 1, or a dozen records in the database, representing snapshots in time. The database is best used to gain clues that can be investigated, but you should not rely on accuracy.

This page is provided as an index for various sources of information, none of which is perfectly reliable, and is provided with no warranty of any kind. Use it at your own risk.

Porsche 356 Registry Chassis Number History


This database is maintained by the Porsche 356 Registry to store historical information about particular Porsche 356 cars during their lifespan. Some of this data was previously available on the 356 Registry website under the old "VIN DB" and Members Cars section and has been imported to this database. Other records have been created on this website more recently, by members under their website profile.

Each record is organized under the following headings:

Current Configuration - a description by the owner.

Kardex/CoA Sourced Records - from Porsche records only.

Reutter Factory Sourced Records - from Reutter factory records only.

Legacy & Member Records - accumulated for decades from various sources.

MarketWatch data -  ads and auction results.

Engines and Transmissions Owned and Wanted

This is where you can find engines and transmissions that the owner of the car may be willing to sell or that you may want to buy.  This section is searchable so that members can find each other. 

Here is an additional webpage with listings of engines that members have offered to sell and engines that members want to buy.
Marketplace - Engine Search

Learn how to include your from this help document. 
How to add your car

How to Search

The Chassis Number History is a database that can be searched by very small details by clicking "Click here to toggle additional questions" in the shaded bar below the top search box. The top search box criteria is very broad and self explanatory. If you wish, you may choose to click "search"  without any limitations and view every car in our system. You can also search for a range of cars with certain attributes, for instance "T5 Cars currently painted Black". There will often be multiple records of the same car, which can provide clues about its history. 

Please experiment to learn how the search function works. It's fun!
Search the Chassis Number History Database

Factory Number Table

 

Brett Johnson has generously donated some of the content of his latest, updated and most complete 356 book to the Registry. The information in this document is an excerpt from The Porsche 356, A Restorer’s Guide to Authenticity IV, and is used by permission. More about Brett here.  

Chassis/Engine Tables


Eric Cherneff's Serial Number Reference Site

Eric was a major contributor to the Registry's original VIN database. His personal site does not have information that has been collected on the Registry website. This site shows the range of the related chassis and engine numbers where one of the two is known.

 

Serial Number Reference Site



Elevenparts Original Engine Lookup Service

Elevenparts, a vendor in Switzerland, offers a free service on their website where you supply photos and they will tell you your original engine number. Note that you will not receive any documents, just a return email with the numbers requested.


Four-Cam Carrera Engine Types

 

 

This chart was compiled from factory documents by the late Olaf Lang at Porsche AG for presentation to the Registry membership in May 1991, appearing in Brett Johnson’s column in Volume 15, Number 6 (August 1991). The purpose was to clarify the many four-cam engine types constructed, their features, production dates and original intended use.

 

Four Cam Engine Types



Carrera Speedster List


This chart was compiled from factory documents by the late Olaf Lang at Porsche AG for presentation to the Registry membership in August 1991, appearing in David Seeland’s column in Volume 15, Number 6 (August 1991). The purpose was to verify those Speedsters originally fitted with four-cam engines, as well as those that had GT bodies. Even in that era there were concerns about misinformation and fraud. We have recently added a couple of additional dates to clarify when certain changes were made.


Four Cam Speedsters Produced 




The Controversial Subject of "Matching Numbers"

This section contains links to information and the opinions of members to help the reader better understand the topic. All opinions are those of the authors and not of the Porsche 356 Registry.

Who Cares About Matching Numbers?

The following links are to articles and 356Talk Forum topics where the value of matching numbers is discussed.


Article - Much ado about Matching 

Forum - Matching Numbers
 
Forum - Period Correct vs. Numbers Matching

Forum - Percent Premium on Numbers Matching

Forum - Numbers Matching vs Not Matching

Documents that Show Original Numbers

There are documents that "prove" the original matching numbers of a Porsche 356. The Kardex is the factory warranty card which (usually) contains the original engine, transmission and chassis numbers of a 356 as well as the factory accessories that came with it. The following are links in which the alternative methods of documenting original numbers are discussed.

Brett Johnson - Factory Documentation for Your 356 Porsche/Kardex Translations

Article - The mysterious KARDEX, What it is.... and isn't

The Factory Records of Carrera and 356 Porsches:
A Visit with Olaf Lang, Porsche A.G.


Charlie White website - Kardex v. COA / Kardex Translations

Forum - Why the COA Sometimes Pales in Comparison to a Kardex

Forum - Porsche COA vs PPS vs CTC vs Kardex 

Sources for Obtaining Original Numbers

Kardex records are the property of Porsche; they are not available through Porsche or the Porsche 356 Registry. You may be able to acquire a Kardex via a third-party source if you ask other members or search the internet.
 
The following are external links to information on the Porsche AG website about Porsche Vehicle Documentation and the Porsche Classic Technical Certificate. 

Porsche Vehicle Documentation

Porsche Classic Technical Certificate
 


Avoid Being a Victim of Classic Car Hobby Fraud

This link takes you to a 356Talk Forum topic which discusses fraudulent activities related to matching numbers and the dangers of wiring money for buying or selling a car.


Forum - Avoiding Being a Victim of Classic Car Hobby Fraud




Porsche 356 Registry Position Statement Against Counterfeiting and Fraud

The original Porsche sports cars were produced from 1948 through 1965 and have exceeded the factory’s and owners’ expectations for their longevity. The market value of the 356 series has continued to increase over the years with it now exceeding the value of many new 911 variants. This has resulted in an increasing number of 356s undergoing a thorough restoration – a trend supported by aftermarket reproduction of increasingly accurate components. 

Although 356s restored to original specifications are beloved by owners, some restorations take liberties with the objectives of this process...

Accordion Widget
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These exceptions in one way or another are misrepresented by using key pieces of another 356 to indicate that the “restored” vehicle is something that it is not. This dishonesty may involve stamping chassis number plates or even a new bulkhead piece with another car’s number, or cutting the main bulkhead chassis stamping out of one car and welding it onto the “new” car. These transgressions include stamping engine serial numbers on to substitute timing case covers to “recreate” a matching-number engine or re-stamping other numbered components. Some of these “restorations” take the opportunity to recreate a higher valued model such as a Convertible D, Speedster, or Carrera from an otherwise ordinary model. These are not clearly identified tribute cars or outlaws, but attempts to misrepresent a car as having been produced as a special model by the factory.


We admire the commitment of owners who have the time and resources to restore their 356 Models to original factory specifications and condition. However, going beyond an honest objective by surreptitiously attempting to recreate a car that was not produced by the factory and thereby mislead future buyers in the interest of creating illegitimate value and profit is not merely deceitful, it is simply fraud.


It is the position of the international Porsche 356 Registry that any restoration of a 356 should generate complete and truthful documentation of the facts and processes of the restoration and that this documentation should faithfully follow changes in a car’s ownership. Individuals interested in buying a restored car – particularly special or high value models – should demand such documentation as a condition of purchase.


Any Porsche 356 that is used and enjoyed as the factory intended requires at least diligent maintenance and perhaps even a full restoration at some point. For those cars that in the judgment of their owners have gone well beyond mere patina, the international Porsche 356 Registry encourages restoration that can then represent the specifications and condition the factory originally produced. However, it is important to the Porsche 356 community that current and future owners can be confident about what their car represents. We also charge restoration work to faithfully disclose the authenticity of the vehicle and major components with honest documentation.



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