Engine identification

[Dart Swinger 72]

What's up guys ? I have a 340 I just pulled out of my dart today,the numbers on the driver's side are 2780930-340-4 which from what I've found say its a 340 from 68-73 . On the passenger side I have 5-28-80 how is that even possible? That would mean it was cast in May of 1980. It has X heads on it also.If anyone can clear this up for me that would be great! Thanks .

 

[64DartGTinAZ]

According to this link, the numbers on the passenger side are partial VIN:

http://www.stockmopar.com/mopar-engine-casting-numbers.html

"You can find your casting number on the left hand side of your engine. Don’t get this confused with the partial VIN number that is also stamped in your engine which is on the right hand side of your engine."

 

[krazykuda]

Here's how to find out what you have:

http://www.forabodiesonly.com/mopar/showthread.php?t=285021


Welcome to FABO

 

[Mrbean]

Is the number on the right side cast, stamped or on a tag? Pic would be great.

 

[Dart Swinger 72]

It is cast just under the head behind the motor mount

 

[Dart Swinger 72]

It is "B" in the link krazykuda put up here that is what is confusing me. Cause it s impossible to have a 340 from that year. Is it possibly a 355 X block?

 

[gdrill]

Take some pics and post them up here.

 

[Dart Swinger 72]

It's cast "B" in the link krazykuda put up that's what's confusing is it possibly a340 X block?

 

[Dart Swinger 72]

Trying to figure out how to post pics as soon as I get I will

 

[Dart Swinger 72]

I think I just uploaded photos first is drivers side second is passenger side

 

[Dart Swinger 72]

1st is drivers side 2 nd is passenger side

 

[d55dave]

The date looks like 69 to me. Remember that these are cast numbers and are often rough. Clean it well with a wire brush and have a closer look. Is there a VIN stamped on the VIN pad? 69 cast would be a 70 model year should have a VIN on it.

 

[Alaskan_TA]

The VIN pad is under the drain plug in your second photo.

The engine has its own serial number as well, look on the front of the block below the drivers side head surface.

Get photos of both numbers if you can, they will help a lot.

 

[Rocky_JS]

The partial vin is, stamped not cast, on the right oil pan rail about midway on a machined pad about 2-3" by 1/2".
The engine assembly info is, stamped not cast, on the left, front of the block just under the head mounting on a machined pad

5-29-69 it appears which seems likely used in an late 69 or early 70 vehicle. If the VIN starts with 9 or 0 will determine that.

 

[Dart Swinger 72]

I'll do some cleaning and check I'll let you know thanks

 

[Dart Swinger 72]

oil pan rail is 9B424241 drivers side front under head is EWS OP28890133

 

[Rocky_JS]

E = 1969 model year built at the W = Windsor plant, "s o" is actually "340" and 2889 is the assembly date - June 25, 1969, 0133 is number of engine assembled that day up to yours.

vin 9 = 1969, B Hamtramck car plant 424241 is last 6 of vin.

 

[Dart Swinger 72]

AWESOME!!!!! so there should be the forged internals in my 340 then I presume?

 

[Rocky_JS]

it would have been a forged crank from the factory. Also I missed -The P on the assembly info stands for premium fuel.

 

[Dart Swinger 72]

Thanks for all the help!!!!!!

 

[Alaskan_TA]

The only 1969 model year cars built at Hamtramck (or anywhere else) with 340s were Darts & Barracudas, so that narrows it down some.

 

[Marcohotrod]

x blocks had a large X cast in the front, I think driver side

 

[krazykuda]

You have a 69 model year engine. As long as it still has all of the original internals it will have "the good stuff"...