7 1/4 rearend

I had one in my ex-wifes daily driver duster.
3.23 open rear with 235-60-14 tires, the car would never hook up just spin.
My ex wife had a lead foot so it went thru alot of motors with a 4-speed.
She blowed up the original slant with 70K on it this was in about 1987.
She then proceded to blowed up at least 3 more small blocks in 10 year span in the same car.
The rear never broke because it would not hook up...... or I was just lucky