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All you will see is a number cast into the part from 1 to 365. It will look like a plate with the date was screwed into the mold for the manifolds. Unlike Chevy, which uses actual dates (like 3 C 69, for March 3, 1969), Olds will cast 62 for the 62nd say of the year.
The cast-in ID consists of a letter or number, usually found in the depression just behind the thermostat's front right water passage and the #8 cylinder's runner. It is a 6 to 8 digit number, usually on one of the intake runners, often behind the carb, and usually near a raised CFD and star (dot with radiating lines).
OLDSMOBILE BLOCK CASTING NUMBERS. Blocks 1949 - 1964 The casting number is located at the rear of the bell housing. The number are about ¾" high, and oriented to the right (passenger) side.
Big Block Head ID/Codes, Casting Numbers. If it's an A, B, or C head, look for the engine unit number/ID code as detailed in the Blocks section under Big Block Unit Numbers. 1967 C heads had this number; 68-9's did not.
16 lis 2021 · Olds blocks are very easy to identify. A letter cast into the front of the engine block under the intake manifold sealing rail identifies a small-block. A letter in the same place identifies a big-block.
10 lip 2012 · Olds, one of first to use beehive valvesprings were ahead of the game in the early 60's. Comp cams has a new beehive spring that is lighter and will reduce valve bounce plus raise RPM float levels. Perfect way to avoid retainer interference with rocker and get a high tech spring.
Oldsmobile blocks aren't made of mush, rather, they are made of high quality cast iron with plenty of nickel to make it strong. Olds big block engines were cast with extremely high nickel content until mid 1970. You can easily spot the difference in the shape of the "F" near the oil sending unit.
