Conveyor Belt Number at Foundry
CON = Conveyor (number not available)

Engine Block Cast Date Code
B355
B = 2nd letter in alphabet = 2nd month in the year = February
3 = 3rd day of the month = 3
55 = last two digit of 1955
Date block was cast on, February 3rd, 1955
This engine probably went into a 1955 model year passenger car.

Block casting Number
3836233 = 1955-1957 235 cubic inch

Engine Serial Number
0137350 T55Z
0137350 = Units produced starting at 1001
T = Tonawanda New York - Engine assembly Plant
55 = 1955 = Model Year of engine = 1955
Z = Regular engine, 3 speed transmission, 9" clutch, No Hydraulic lifters

A high percentage that this engine was:
Cast in Tonawanda New York on, January 3rd, 1955
Assembled in Tonawanda New York on or around, January 3rd, 1955
Made as a straight six cylinder 235 cubic inch engine.
A 3 speed transmission was mated to it with a 9" clutch.
Does not have Hydraulic lifters. (powerglide engines only in 1955)
Was installed into a 1955 model year passenger car.

Source: 1955 Chevrolet Specifications (resto pack)

1954 Chevrolet 3105 Deluxe Panel Truck
w/Factory HYDRA-MATIC