409 block

[garn3]

I have a 65 409 block. It has an X stamped on it.

What does that mean.

Thanks

 

[JimKwiatkowski]

X on the block

Read this thread,here's the link.

http://www.348-409.com/forum/showthread.php?t=7586&highlight=block

 

[Ronnie Russell]

garn3 ask a short, simple, basic question. He was referred to a thread that answered his question. No reason to ridicule him for not knowing the answer. Not everyone monitors this web-site every day. Some members may go months without logging on. Remarks like , " oh no, not again". runs some members off. This is a web-site for all levels of expertise. Cut em a little slack.

 

[johnnyrod]

Welcome new guy and x means gold. Its a 409 . I dont know what it means but a 409 is cool all on its own x or no x. I have found a lot of nice people here. Oh and I love my new valve covers with the chevrolet script. Today was a good cruising day. Enjoy garn3. John

 

[JimKwiatkowski]

Welcome new guy and x means gold. Its a 409 . I dont know what it means but a 409 is cool all on its own x or no x. I have found a lot of nice people here. Oh and I love my new valve covers with the chevrolet script. Today was a good cruising day. Enjoy garn3. John

John,348--62-65 replacement block & truck block (has"X"on the block) and a 348-- 63-65 truck block (has"X"on block)

 

[johnnyrod]

Thanks Jim see I learned something here today and at my age 39 and holding. John

 

[mabeauchamp]

Jim, I was under the impression that all 63-65 409 passenger blocks carried the X. Am I mistaken? Mark

 

[JimKwiatkowski]

Jim, I was under the impression that all 63-65 409 passenger blocks carried the X. Am I mistaken? Mark

Yes 63-65 do have the X,but I was talking about 348 truck and replacement blocks have an X

 

[mabeauchamp]

Thanks. I still like the "experimental" explanation the best. I plan to use it the next time some one asks.

 

[JimKwiatkowski]

This info comes from our site,in the engine code section.


348/409 X on block


Starting mid year of 1962, an "X" was cast into the front of the block on all 409's as well as the 348 truck and replacement blocks of the same year(s). This is located in the area shown in this pic

 

[Tom Kochtanek]

no "X"

Here's what appears to be an "early" 068 block that the owner says has no "X". Note the date (January 29, 1962).

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=250026132937&fromMakeTrack=true

Best,
TomK

 

[32witha409]

422 block no "X"

I have a 409 "422" casting #, Julian code of "100" and motor is not drilled for the second set of mounting holes on left if in front of motor. It is set up with fartory 425 HP hardware. I don't find a X on front where it should be. What does this indicate? I also dont see a year code with the julian code which as far as I can tell only indicates month and day. The block have been decked so I don't see the pad numbers. Can anyone help?


Thanks

Robert

 

[Ronnie Russell]

Robert, Play with the menu at the top of the home page. Much information there. All the basic stuff. Your block is 1964, cast on the 100th day of the year. You will soon be able to identify the casting nos. of different years by doing a little studying, if not, just ask, someone here can help you. Good luck.........