Engine date code
#2573963
11/04/18 05:06 PM
11/04/18 05:06 PM
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aspenrt360
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Hey guys working on a car i picked up for my wife, it's a 72 340 Demon was an export car as i was pulling it apart i noticed a large difference between the build date and the casting date on the block and just assumed it was an engine swap car. today i am out in the shop with a buddy and we got to looking at the vin# and it matches the car! the block is a 1-15-71 and the cart is 4-72 this is a big stretch to me is this possible? or likely? the other thing i find odd is the pistons are 4 valve relief and look to be low comp which does not work with a 1-15-71 block but could very well be for a 4-72 340. is it crazy to think they had blocks kicking around that long before they assembled them? any insight would be great.
2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4
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Re: Engine date code
[Re: aspenrt360]
#2573990
11/04/18 05:54 PM
11/04/18 05:54 PM
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Joined: Jan 2003
Posts: 17,521 Las Vegas, NV
6bblgt
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I Live Here
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no "first in / first out" inventory controls were used if a block or pallet of blocks got buried, whenever they were rediscovered they'd be sent into further production from what I've seen, '72 was an odd year with many big variations date-wise, maybe new procedures being put to use, cleaning up former messes the block casting has not much to do with the final assembly, what is stamped on the front of the block below the driver's side head? HM340R xxxx xxxx ?? cast crankshaft ??
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Re: Engine date code
[Re: 6bblgt]
#2574005
11/04/18 06:18 PM
11/04/18 06:18 PM
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Posts: 855 ontario canada kingston
aspenrt360
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What part are you looking for?LM29H2B or the sequence #
2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4
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Re: Engine date code
[Re: aspenrt360]
#2574019
11/04/18 06:46 PM
11/04/18 06:46 PM
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aspenrt360
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front of block under drivers head is M H 340 P 38118062
2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4
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Re: Engine date code
[Re: aspenrt360]
#2574030
11/04/18 07:07 PM
11/04/18 07:07 PM
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aspenrt360
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it is a P. this motor has been toyed with for sure as it has a forged crank but cast pistons the odd thing is the bearings are date coded 71 the timing chain is dated 83 so someone was in there. as for some of the other stuff this was an export car it has an odd euro serial# plate on the fender well and it has the I on the fender tag and the story is that a service man brought it back from Germany.
Last edited by aspenrt360; 11/10/18 08:47 PM.
2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4
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Re: Engine date code
[Re: 6bblgt]
#2574046
11/04/18 07:51 PM
11/04/18 07:51 PM
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aspenrt360
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I will recheck the 3811 part it is a bit tough to see. probably get back on here tomorrow.
2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4
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Re: Engine date code
[Re: 6bblgt]
#2576791
11/10/18 03:04 PM
11/10/18 03:04 PM
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aspenrt360
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So while putting the engine in today i checked the Von it is E35229 i have no idea what that stands for?
2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4
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Re: Engine date code
[Re: 6bblgt]
#2576794
11/10/18 03:07 PM
11/10/18 03:07 PM
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aspenrt360
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any info you are willing to share, to help answer your questions
if the Demon still has its original door sticker - it will show when the car was actually completed: MDH (MonthMonth DayDay HourHour)
the engine number, below the head, will show when the engine was assembled
if it was an EXPORT ordered car & delivered NEW "stateside" the VON will be "E3xxxx"
or was it an order originated in Canada? I also have the door sticker on the door still i would post a pic with the last couple of # blocked but i have not posted a pic on here in 10 years!
2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4
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Re: Engine date code
[Re: aspenrt360]
#2576839
11/10/18 06:32 PM
11/10/18 06:32 PM
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Joined: Jan 2003
Posts: 17,521 Las Vegas, NV
6bblgt
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,521
Las Vegas, NV
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I believe the E3xxxx VON indicates it was ordered from over-seas & scheduled for delivery stateside when new - the serviceman's plans & the car's delivery status could've changed or it was shipped to Germany at a later date did you get a good look at the assembly date? 3811 VS. 3911
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Re: Engine date code
[Re: aspenrt360]
#2576847
11/10/18 07:22 PM
11/10/18 07:22 PM
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Joined: Feb 2004
Posts: 855 ontario canada kingston
aspenrt360
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i will check the date and try to post some pics tonight.
2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4
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Re: Engine date code
[Re: aspenrt360]
#2576880
11/10/18 08:50 PM
11/10/18 08:50 PM
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Joined: Feb 2004
Posts: 855 ontario canada kingston
aspenrt360
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Ok so on the front of the block for sure MH 340 R 3911862 was really hard to read so i sanded off the paint and used a sharpie to get some definition the bottom of the r is faint but it is there and so is the 9 instead of the 8 so that seems to make more sense.
2013 Chrysler 300 touring 1974 Dodge Charger SE. 360-727-8.75-3.23 sure grip 1972 Dodge Dart Swinger 1995 Dodge Ram 1500 4x4
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