Original Rear end type on my 70 Duster

[OldmanRick]

All the 70-72 318 Dusters with the 3spd option had factory installed 8 3/4 rears that i've ever seen. The auto trans cars all had 7 1/4. Not saying you couldn't option one in, but i'll bet that was a really rare choice.

 

[Alaskan_TA]

The 7 1/4" axle was standard on every A body built. EVERY one.
The 8 3/4" axle was the upgrade for the towing package and could be optioned even on slant six models. The 340 cars from 68-72 got the 8 3/4". All base model slant six and 318 cars got the 7 1/4" axle if there was no towing, Police or Taxi fleet option chosen. .

Absolute baloney.

All the big block A's came with an 8 3/4".

Same for all the 340 A's.

Same for any 1970 up A with a 3-speed stick.

 

[Kern Dog]

Absolute baloney.

All the big block A's came with an 8 3/4".

Same for all the 340 A's.

Same for any 1970 up A with a 3-speed stick.

Interesting.... Everyone knows that no 340, 383 or 440 car came with a 7 1/4" axle.
You are cherry picking, Barry.
"Standard" was in reference to base model cars before any options or optional models were chosen.
If you're so smart, where were you yesterday to offer your wisdom? You just sit back and wait to jump in when you think you have to TRUMP someone?

 

[Alaskan_TA]

The 7 1/4" axle was standard on every A body built. EVERY one.

Is what you said.

You were wrong.

It is OK, it happens.

 

[72bluNblu]

It’s just definitions!

On a base model the 7.25 was standard unless other options were specified.

On a 340 car the 8 3/4 was standard. Not exactly a “base” but they were broken out separately

Since we were talking about a 318 car to begin with the “standard” reference doesn’t make a ton of sense, the 318 wasn’t the standard option already. Maybe the default with just a 318 and no other options was still a 7.25”, but an 8 3/4 was easy enough to have, it was just another option on a car you already had at least one option on…

 

[Demonic]

I though it was the three speed on the floor with a 318 that gave you an 8 3/4, if I remember correctly. Every slant and 318 car I parted out back in the day ( wish I had half of them back ) had a 7 1/4 rear.