casting numbers are 2780930-340-3 6/20/67 DAY TIME also a 0232 cast on side of block. under the cylinder head there is a strange cross looking thing stamped in block DW34023340076+. The other number behind dist hole is 8B 239741 VIN?

2ND

Yes the number behind the distributor hole is the VIN sequential number. It's a 68 model year 340

DW340 ....

D=1968 Model Year
W=Windsor engine plant
340=cubic inches
2334 is Monday, December 18, 1967
0076 is the build sequence

Thanks scott any way of telling what car line it came out of? How about the cross thing after number. looks to be a maltese cross indicating crankshft is undersized .001 ever hear of that?

Yes, cross = .001" Under Sized crankshaft

any way to tell the car line from partial vin 8B 239741

Any idea what this is

C22 "Scheduled Production Date" - Friday before Christmas 1967 (12/22/67)

a known B'cuda at 8B239678
-your 340 block at 8B239741 * anyone know a Barracuda or Dart between 239678 & 239849?
& a Dodge Dart at 8B239849

where's that 0262 casting number?

casting no

date time

Dan here is a better picture

68 340 should be what color? I will send it out and have it checked, see if its any good. bores are ok some pitting will need a bore probably.

my 68 Barracuda 340 S has a SPD of B14 and sequence number of 203175.

So did they make roughly 36,000 barracudas (if SPD's are close to be right) between Nov 14 and Dec 22? Or is that an incorrect way to interpret that.

P8B203175 SPD-B14 (Tuesday, November 14, 1967)
P8B239741 SPD-C22 (Friday, December 22, 1967)

36,566+ assigned VINs in ~27 UAW working days (~1,400 cars per day) out of two shifts on each of two assembly lines at the Hamtramck, Michigan plant.

These VINs would be Barracudas, Chargers, Darts, & Valiants.

"They" assembled 45,412 1968 model year Barracudas between July 31, 1967 & July 12, 1968.

Thanks Dan that's some pretty good info. So probably a 68 barracuda.I will get it checked out.

In '68, 340's would have only come from the factory in Formula S Barracudas or Dart GTS. I'm not aware the factory ever slipped a 340 into a Valiant or a Charger that year (& that's not what Dan was saying).