The C means it's for a Chevy truck, but I couldn't find anything on the 4b.
The k means it was made in St. Catherines, the 0218 is Feb. 18, and the tmm says that it's either a 1974 350 2 barrel, or a 1980 350 4 barrel.
This is the website I used: http://www.nastyz28.com/chevy-engine-code-stampings.php
350 and 327 [1966 - 1980]
The GM engine with the casting number 3970010 is a 350 cubic inch V8 engine, commonly found in various Chevrolet vehicles from the late 1960s to the early 1980s. The stamped numbers "K1114TXL" indicate that the engine was manufactured on November 14, likely in the year 1979, with "TXL" designating it as a specific engine variant. This engine was often used in passenger cars and light trucks.
The block casting numbers are on the top driver side of the bellhousing flange at the back of the engine. The engine code is stamped into a pad on the block deck in front of the passenger side cylinder head.
The GM engine with the casting number 3970014 is a 350 cubic inch small-block V8. The stamped numbers T0125CKD indicate that the engine was assembled on January 25th, and the "CKD" suffix suggests it is a high-performance version, likely from the late 1960s or early 1970s. The additional number 12R534212 is a unique serial number for that specific engine. This engine was commonly used in various GM vehicles during that era.
this page will give year and model type and application for all chev blocks: -MorTec, Inc. Chevy Smallblock V-8 Casting Numbers List- copy and drop this on your browser, then choose - -CHEVY V-8 BLOCK AND HEAD casting numbers-
The number is stamped on the back of the engine behind the driver side head on a flat deck were the transmission bolts up to the engine. You can see the "casting number" with an inspection mirror. On some later model engines the last 3 numbers are stamped between the freeze plugs on the side of the engine.
Facing the engine and to the right of center just below the intake manifold you will see a flat area about 1/2 inch wide and 2 inches wide. The numbers will be stamped on that area.
The casting number on a Ford 302 V8 engine is typically found on the engine block, on the driver's side, just above the oil pan rail. It may also be located near the front of the block, around the timing chain cover area. Look for a series of numbers and letters that indicate the specific casting used for that engine. Additionally, the numbers may be stamped into the metal, making them more challenging to see without cleaning the area.
The numbers stamped in front of the head are the engine id numbers.
Every Chevrolet V-6 engine block has a metal plate attached to the engine block, listing the specifics of the engine. The casting numbers should be on the engine block plate.
what does the casting number GM 3892657 say about this engine block
On a Dodge 4.7L engine, the casting numbers are typically located on the engine block, often found on the driver's side, just above the oil pan rail. Additionally, you may find casting numbers near the rear of the engine block or on the cylinder heads. It's advisable to clean the area gently to ensure the numbers are readable, as dirt and grease can obscure them.