Decoding the #s

[swinging340]

I'm trying to find out what year my 318 block is and if someone can look up my compression rating, what the deck height should be for the block etc.

PM318R 26381268 are the #s

Anything else ya need, I would be glad to get it.

thanx

[tsteiner61]

An easier way to find the year is to look at the casting numbers. The should be on the drivers side below the deck. They are large so you can't miss em. Should be something like 2536030-318-4 and to the right of that will be the actual date in mm-dd-yy format (smaller tag). That will get you the year of the engine right off. From that I'm sure a lot of the other guys here will be able to help out. This wont tell you what kind of car its out of, but for deck height only the year of the engine should matter, if my memory serves me right....

[satellite66]

PM Mound Road plant
318
R regular fuel
2638 Oct 17th 1968
1268 engine assembled that day.

[swinging340]

Cool,

Anybody know the compression rating of them in '68? Seems like they were something like 9:1, not sure though and don't have a book.

P.S. Where was the Mound Road Plant?

Swinging340

[jcuda]

Compression 8.8:1

Mound Road info
LOCATION:
20300 Mound Road Detroit, Michigan 48234

FLOOR SPACE: 956,000 square feet

ACREAGE: 39.7 acres

PLANT HISTORY:
Plant purchased from Briggs Manufacturing Company in 1953 and has produced engines since that date.

[swinging340]

Thanx for the info jcuda,

What book do you have?

[jcuda]

compression was from "Chrysler Muscle Car Parts Interchange Manual 1968-74" and the Mound info was from a search on the net at www.google.com.
Glad to help.