Bowtie, Aluminum, nodular iron splayed caps, wet sump, 4. Pontiac blocks are interesting power plants that are often misunderstood and improperly identified by sellers and buyers alike. Most 1967 and earlier blocks place these scallops at approx 4 o'clock and 8 o'clock while 1968 and newer blocks place the scallops at 3 o'clock and 6 o'clock. It is important to note, however, that casting codes were often used for more than one year and could have different main caps or machining depending on the year. In fact this is the part number for a 1968 390-428 Water pump. Often when a specific Model Design digit like Z or W Mustang or Cougar is found on a part, the part is most often specific to the intended designed model.
The next two digits stand for the month of the year. Casting numbers are usually the same or nearly the same as the part number. Aluminum,over the counterPontiac 23' head,62cc,angle plug, 196cc intake port 10045434. On blocks produced in 1970 and after, you will find 350, 400, or 455 stamped towards the left side of the front of the block. The engine code and partial vin will accurately nail down whatever the thing is rather quickly, and the other information will fall into line with that. And as you can appreciate these cars and blocks are rare to find over this side of the pond. An arrow points to the beginning of the shift an another dot outside the circle indicates what time of day the cast part was made.
Now to the engine code. V8 codes are stamped on a pad just forward of the right side passenger cylinder head. And seperated by model year of the car. If the block contains two digits for the year, then it was a block manufactured at the Tonawanda engine plant and therefore is not a Corvette block Corvette engines were almost exclusively built in Flint, Michigan. For 1964—67, they are found on the distributor pad. Cylinder Heads Casting numbers for cylinder heads may change from year to year. Vortec truck, roller cam, one-piece rear seal 10243880.
Special heads are required with emission controls from 1965-1966 for the emission system to operate properly. The final single digit represents the year. Look at the remaining portion of the code. Engines are identified by a tag attached to the engine. Engine Casting Number Check engine casting number blocks to find auto parts. The final digit could be a year code. The clock is a circle of 10 dots, one dot for each hour of a shift usually 10 hour shifts.
It doesn't indicate what the original equipment was. Whether the engine is sitting in a car, on a stand, or on the floor, at first glance you will note that all Pontiac blocks have a hydraulic lifter valley pan. If you are looking for the actual Chevy engine codes that are stamped into the block during assembly, has an excellent block stamping number decoder. Quickly from the partial vin I know this is a Chevy 1 1973 model year 3 built in Norwood Ohio N. Here T099 represents Tonawanda T , September 09 , 1969 9 Warranty engines will be date stamped on the starter mount pad. As new castings are released on late models keep your eyes open for the new numbers.
This one produced in 1971 at Tonawanda with engine serial number 71787. Making it 1965 application The Decade letter is the start of the Ford casting number, even if additional numbers or groups of numbers are found nearby you should always look for the the Decade letter for then start of the casting number. Let's decode something real quick like, you can read the details further down below: Here's an engine. The only guarantee is to take off the pan and look. My block was decked when it was rebuilt and now I am working on the numbers. If you are out shopping for an engine or checking out a car and want to identify the motor as correct or complete, keep in mind that the engine and major component casting dates should be within a day or two.
If it doesn't match - is it correct? How do you come up with a car build date. Here is a list of casting numbers, along with their original applications. Once you locate the casting code, you can find your block through a number of searchable databases. This list of codes is a summarization, it is not complete nor all inclusive. Big-Block Ford: More correctly referred to as the Ford 385 engine, after the factory 3. The numbers are cast into various locations on the block itself, depending on what family of blocks you are referencing, but should be fairly recognizable and usually pretty readable. Where is the casting number? Aluminum, Pontiac Super Duty version of Gen.
The Model Design digit is often the most misunderstood piece of information found on Ford casting numbers. Common factory displacements ranged from 239 cubic inches to 312 cubic inches. . In all, over 90,000,000 small-blocks have been built in carbureted and fuel injected forms since 1955. X is used for special parts and Y or Z are often service parts.
Cylinder head casting on Cylinder head We could go into a lot detail about other components and various casting numbers for intakes, exhaust manifolds, and more. The final digit could be a year code. One of the important details about all of this is knowing the quality of the block. The letter is the month, next 2 digits are the day and the last digit is the year. They came in 351 cubic-inch and 400 cubic-inch variants, and were known for their large port and valve sizes, and remained in production until 1982. Right now we are limiting the listings to Chevy V-8 blocks, cranks and heads.