There are many other stmapings that wound up on the ID pad or along the oil pan rail. Quite often, these stamped IDs will be followed with an E indicating a cast crank. The 'T' indicates that it was made at the Trenton Plant (it does not mean truck).
And not all block that wound up in high performance applications always got a block stamped HP.įor Engines made begining in 1974, the CID displacement will be prepended a 'T-' Where 4T- means 1974, and 8T- mean 1978. A block might not have either an HP or an LC. Likewise, a L or LC would indicate a low compression engine. Some of these engines will be stamped with an HP indicating that it was destined for a high performance application. If a dash and three numbers follow, this indicates the date it was stamped (not necessarily cast). If an additional three digits follow, usually after a dash, these will indicate the date it was stamped (not necessarily cast).įor Engines made begining in 1965, again the first character indicates the year for (in set order). The Year code is followed by the first two digits of the CID displacement (ex. For 1960-1964 blocks the engine code will start with a letter year code in the set that indicates (in set order).
