Engine Block Code

[mathewdylang]

Okay, I had a 318 given to me. The block is clearly stamped 318, but with a block code that I think reads 2506080. Does this code mean anything or is this the production number? I ask because it has a four barrel intake on it. It's a factory chrysler intake but almost looks to big for the 318. The other side I believe has a date code. Like 3-24-72. I'm guessing that's the production date. Can anyone point me where to look or does the block code not mean anything for heads and intake?

 

[AJ/FormS]

Is it possible that number is actually 2536030?
This is the casting number for 318s from 67 to 75.

 

[mathewdylang]

It's possible, there is a lot of dirt and mud packed into the numbers. I was scraping at it but some was stuck pretty good.

 

[krazykuda]

Here's how to decode the block information:

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

 

[mathewdylang]

Thanks krazykuda

 

[krazykuda]

Thanks krazykuda

You're welcome.

Here's a link to a good reference site with casting numbers and some service manuals for free download:

Casting numbers:

http://www.mymopar.com/index.php?pid=20

Service manuals:

http://www.mymopar.com/index.php?pid=109


Main page:

http://www.mymopar.com/index.php

 

[mathewdylang]

I did the smart thing and looked up casting on the intake... makes more sense right. Turns out to be a 340-4 intake from a 73. Thanks again for the help guys.

 

[Infecteddog]

The 340/360 intakes even as they're getting harder to find still tend to be readily available for $25+ less than mediocre used aluminum intakes go for, so they're still a popular choice converting to 4bbl even on a 318.