Trans. Identification (727 or 904)?

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GATORS340

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Can any mopar maniacs tell how to identify what trans. I have in my 1974 gold duster base model? Car came with a 318 from factory. I can't find the numbers 727 or 904 on the case anywhere. Found numbers on the passenger side plate and on the drivers side pan lip but no 727 or 904.thanks for the help!!!
 
Look at the shape of the pan. A 904 pan is shaped like a rectangle with the corner cut off. A 727 is sort of the same shape, but has a dogleg added near the front passenger side of the pan, near the dipstick tube.

In this pic, the 904 gasket is on top.
 

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Great! I'll check her out in the morning. Thanks for the help!!!! Hope it's a 727.
 
Looks like i got the 904 by your pics. It looks like the one on the right. Was hopein it was the 727. Thanks a bunch for your help men!
 
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