Re: differential whine

Posted by Ross On 2012/5/13 13:04:05

In overdrive, your effective final drive ratio will be 3.15, 2.81.and 2.54 for those three ratios. The 4.54 will give you unparalleled flexibility on back roads and in town, but is a bit busy on the highway. The 3.54 with overdrive will lag on steep hills, even on the interstate. That's the combo I had on my 50 Super in college days. 3.9 is probably the best compromise. 4.1 was the usual ratio with overdrive on those cars.