1971 E Body alternator

[resronut]

Is this the correct Alternator for a 1971 Dodge Challenger 340?

 

[floyd]

What numbers are stamped on the pad (my pic is not the correct part for a 71 340)

 

[resronut]

My Alt has no numbers stamped on that pad or anywhere else than the ones in the photo. Probably replaced somewhere in its life. Appears to be the right configuration

 

[moparleo]

Looks like it. Here is an old post picture for a 71 340/383/440.

 

[pschlosser]

The 178 is a common dual-groove pulley 50-amp alternator found on A/C cars. But few of them have lasted for 50+ years, so many of us may have a reman replacements.