Originally Posted by AndyF
Originally Posted by viperblue72
Originally Posted by AndyF
Originally Posted by mopar dave
My book shows 3.73 gear as being best starting line ratio with 4.25 stroke, 28' tire and 3400# for my car.


3.73 probably would be a good ratio with a 28 inch tire. I decided that 3.90 was the best ratio for my Duster but I have a 29.5 inch tire in it.


Andy Iā€™m going to be changing to a 295/65 or a 29ā€ tire. So 3.91 may be my best bet. šŸ‘


You have a 8.75 rearend behind 700 hp?


Andy my plan is a Dana from dr diff. 3.90 or 3.91 gear is available.