What? I don't know if you're considering 4.88 "above" or "below" 4.56 but a 4.88 has a thinner/smaller PINION gear. I'm really not sure what you're trying to saying at all. What is all this talk of a thinner ring gear? I sure as hell didn't notice the new 4.88 ring gear was thinner than the 4.10 gears, though of course there's a big difference in the pinion gear sizes. And with a 4.88 having a smaller pinion gear than a 4.56, for example, yet the case flange thickness is the same, the ring gear couldn't be thinner with 4.88 gears. Or am I just misunderstanding what your'e saying?kidwired said:Jerry, using you as an example to explain my above statement.
I calculate your rpm at 70 to be approx 2623 rpm w/ 4.88s in 5th gear. while if you had 4.56s it would be 2451 rpm.
Less than 200 rpm difference (regardless of you actual transmision ratio)
and anything above 4.56 in a dana has a thinner, weaker ring gear.
Thank you, here's another wheeler with some common sense about what's a good ratio and what is NOT a good ratio.gripguru said: