Ford Engine Block Codes Serial Numbers Specifications

NOTE: All numbers and specifications are as reported in the 1973-1979 Ford Truck Master Parts Catalog - Oct. All engines for 1973-1979 include an identification tag. This tag describes the C.I.D., model year, year and month of production, change level number and engine calibration information. Block codes were in use up to 1964, or there about, then Ford switched to small metal tags that were bolted to the engine block. The block codes were as follows 144ci: 'N', 170ci: 'T' Note: 200/250ci engines, and some 170's, did not have block codes, as metal tags were used instead.

1. Ford Engine Block Codes Serial Numbers Specifications List
2. Ford Engine Block Identification Lookup
3. Ford 351 Cleveland Engines: Block Identification Guide

While block part numbers can help identify most engine sizes correctly, there are a few exceptions. A good example is the FE family of engines. For example, it is possible for the 390, 410 and 428 to share the same part numbers on an engine block, (i.e.: C6ME-A)

How is this possible?

It takes several individual parts to form and cast an engine block. As engineering changes occurred throughout production, subtle changes were made to some of the individual sections that formed the casting, while others did not require a change. For example, as the FE family grew to include others engines, the section of the block containing the 352 casting did not forego any early engineering changes and remained in place as other FE engines were conceived. This explains the 352 part number found on many FE blocks that are larger than the 352 V-8 engine, including some 390s and 427s.
How can you tell a 428 from a 410 or a 390?

Shakti ke 48 niyam pdf. The surest way is to remove the cylinder heads and measure the bore. 390s and 410s had a standard bore of 4.05' while the 428 possessed a standard bore of 4.13'. However, this will not tell you if you have a 390 or 410 if the part number on the block corresponds to both. You must take a step further and examine the crankshaft for markings as the 410 used a 428 crank.

Note the most common 390s could not be bored to 428 size, (i.e.: 4.13') due to the thin cylinder walls and interference with water-jackets. However, the 390 Police Interceptor and GT blocks had thicker walls between each cylinder bore. Interestingly, some of these beefy 390s were machined to 428 specs for the first line-up of '67 Shelby Mustang cars.

Ford Engine Block Codes Serial Numbers Specifications List

Ford Engine Block Identification Lookup

Due to varying production volumes, the exact serial number with which a change becomes effective cannot be determined. When selecting part numbers referenced to serial numbers, the catalog specifications should be used as an aid in selecting the proper part number.

Ford 351 Cleveland Engines: Block Identification Guide