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Crankshaft photo

This is a photo I put together to aid in the positive identification of cast and forged cranks. Hopefully the illustration will be more definate than a text only description.

Heres a pic of the bal for the steel and cast crank 440's.

Pic donated by C-body.

Crankshaft markings

Iron Cross?? ...but there is one on this 440 we have down the shop on the stamp it reads "c 400 +" whats the iron cross mean?....I never seen one before on these motors


Moparts Member
Posts: 2580
From: Fort DODGE, Ioway , USofA
Registered: Feb 2000
posted 12-15-2002 09:28 PM

Maltese cross means .001 undersize crankshaft.
Maltese cross & X means .010 undersize crankshaft


Moparts Member
Posts: 303
From: MI
Registered: Mar 2002
posted 12-16-2002 06:44 AM

This is a little off the original subject...
As far as boss stampings go... What was the diamond <> supposed to represent?
Was it oversized tappets? if so where do you find these ?


Moparts Member
Posts: 1709
From: Old town,fl,usa
Registered: Oct 2001
posted 12-16-2002 07:03 AM

yes,i think the diamond was for the oversized lifter bore,the maltese cross cranks were just cranks that needed a little cleanup for use,they could have just stuck them in and said nuthin' and they would probably still be running,but in the 60's and 70's ,in america ,we had a thing called "pride in wokmanship",so,they shaved them to make them proper for quality control,just get the correct bearing's,nowaday's all sizes of journal bearings are pretty much shelf stock,


Moparts Member
Posts: 5495
From: Oregon
Registered: Nov 1999
posted 12-16-2002 12:01 PM

The dreaded diamond. I have no idea where you sould find oversize lifters these days. If you're really in love with that block then maybe have the lifter bores bushed. That would solve two problems at once but it costs a fair chunk of change.


New Member
Posts: 79
From: Lakeland, FL, USA
Registered: Oct 2002
posted 12-16-2002 02:35 PM

According to my 66 chrysler service manual, the Maltese cross indicates 1 or more rod or main journals are .001 U/S. The journals that are U/S are identified by a stamp on the No.3 crankshaft counterweight. (M for main, R for rod). The X with the maltese cross indicates that all journals are .010 U/S.
Like one the other members said, I'd hate to find one of those diamond stamps.(.008" O/S lifter bore)


Moparts Member
Posts: 2591
From: Decatur Alabama
Registered: Oct 2001
posted 12-17-2002 02:17 AM

I've seen engines with both the Iron cross first class, Pour le merit, the blue max, Maltese cross or whatever that thing is and a diamond. You know the factory had a lot of fun with that one.



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