Reply To: Rear end ratios
John & Shirley Harvey
It depends upon what you want to do. 4.27:1 would be great for drag racing, especially on the 1/8 mile tracks, but the 3.92 is a whole lot better if you plan to drive the car on the street, and maybe get some half way acceptable gas mileage. I don’t have a book that covers 50 specifically, but 54 had 4 ratios, 3.32,3.54, 3.90, and 4.10.