oldmopardude
Well-Known Member
The hard fact is, if the first letter is truly an M , it is a 71-73 Mound Road engine.If so, the vin# will be on the passenger side of the block by the motor mount.
Would you want a 73 340 or a 67 340.. duhAnyway, there wouldn't be a 340 of any kind in a 65 Barracuda, so I don't understand the concern about the date code...?
regardless of which year it is, the engine of all those years are really good engines.Would you want a 73 340 or a 67 340.. duh
I hope it is, you know now where to look to fill in the gaps in Information. Just because it has an M doesn't mean they didn't build the first one there, and then moved to Windsor. it was a new design, and things were moving quickly. Mopar wanted to gang up on Ford and chevy with that engine. and they did.Agreed..but a 67' block just would be a cool find. Once I get my own eyes on it I will get dirty and go for the casting date.
The engine still has the exhaust manifolds on it so I will run those #'s to see what they are.
i love FABO for all the cool "old guys" and technical talent that is on this site!! did any of you guys notice that the 340 jack6GTS posted on this thread had a production date of "6-20-67 and brian6pac's 340 that he just posted has a production date of "6-21-67" !! is that crazy?!! two guys here on FABO discussing production dates of old 340's "just happen" to have motors built 1 day apart!! you can't make this stuff up... !!
The date is cast not stamped ie 7-11-67 and that would obviously be for a '68 Dart or Barracuda because 340's started out in the '68 model year.I had him look 3 different times to look for the date code stamped in the block but he couldn't see it. He was getting frustrated so that didn't push it. He is a Chevy guy that took the Barracuda on trade so I really didn't want to let him know what he has if you know what I mean.
The date is stamped in the front of the block under the left cyl head. My engine was DW340P25170504. The D is for 68, W for Windsor plant, 340, P for premium fuel, 2517 date code, 0504 for 504 unit built that day. Also had a number on the bell of engine and trans, I believe was the order # not a vin. there was a upside down number on the left side of the 67 block that no others had.
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Would you want a 73 340 or a 67 340.. duh
the eight digit number on the bell and block was the last numbers of the VIN number of the car.The date code is more likely 251 day of 1967, and that would be Sep 8 1967. Makes more sense.
Maybe Barry can chime in on that.
Show me a 67 340 and I'll show you my pet unicorn.......
Even if you keep it stock stroke, the 73's cast crank is good for 500 hp.
makes sense...There was a 67 dated 340 block for sale here on fabo about 5 months or so ago! I tried to buy a block on craigslist around 7 years ago in KY. The guy said it was 67 dated 340! But he backed out. So the story is the first ones were cast in 67 for use in upcoming 68 models.