Russ69Runner
Well-Known Member
Got mine on the table. Checked the ratio stamped on the ring gear. It read's 2.76 ratio. Have counted tooth on the ring gear and it come's in at 47 tooth. The date on the ring gear is 11-19-68. But the casting on the chunk is RR-70 also has the 741 on the same side behind where pinion yoke is. So all I see is the 3.55 or 391. gear set for sale. What the heck have I got and what ratio should be used with the 383 and four speed set up. Will have A/C.