8 1/4" with 3:55 SG

Veryfastdart said
No
8 1/4"
Ma Mopar made 7 1/4"s for six cylinders, 8 1/4"for early A bodies prior to the 8 3/4"

8 1/4 were after the 8 3/4. they started in the early 70's somewhere.. 72 or 73 ish...