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Re: Engine code or date code?
Quote:
Originally Posted by MJN
10 21 is the engine assembly date- October 21
YS suffix code is for a 1969 396 truck engine, 310hp, 4bbl carb, manual transmission
There should be a letter at the very beginning of the stamped code that will tell you the engine factory.
F- Flint, MI (1955-1966)
V- Flint, Mi (1967 and newer)
T- Tonowanda, NY
K- St. Catherine, Ontario
S-Saginaw, Mi
M- Mexico
The date cast into the block is the date when the block was cast and which shift it was cast on.
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I don't think they stopped using F for Flint built engines in 1966, they just added a second production line to keep up with demand in 1967 = V.
I have 292 blocks from '67 and '68 that have F codes in the stamped dress numbers.
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Every 25 years I like to rebuild that 292, whether it needs it or not.
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