'67 L79 exhaust manifolds

[Joseph E.]

Can any of the members tell me whether the exhaust manifolds of a '67 L79 have a date code cast into them along with the part number? My manifolds are quite rusty after forty years of not being cleaned/removed but I can read the part number yet cannot see a casting date. As always, your input is most appreciated. Thank you.

Joe

#45420

[Gary B.]

'67 L79 exhaust manifolds; date codes

Joseph,

For '66 L79 applications I've typically seen 559 and 042 manifolds with date codes, but the code is on the engine side of the manifold (not the part number side) and essentially unviewable when the manifolds are installed on the engine. Therefore, the date code is not a judged item.

Gary

[Jeff S.]

Re: '67 L79 exhaust manifolds

Joseph

If you have the K19 A.I.R. on your '67, you should have 3872765 LH & 3872778 RH.
For any rams horn manifold; should you find a date after cleaning the rust, it will likely not have a calendar year identifier -- just month-day cast characters.

Jeff

[Rick S.]

Re: '67 L79 exhaust manifolds

My 67 L-79 exhaust manifolds have the month/day date codes of E24 & E25. As mentioned earlier they are on the inboard side, only visible if removed from the engine.
Rick