Got a good deal on a used set of diffs from a 06 tbss and I wondering if it's worth switching it out? Also what else Id have to do to make it work on my Voy? I know a retune is a definte.
My new 4.10 differentials?Guess what I'll be picking up tonight.
Turns out it will be more like Friday or Saturday at the latest.My new 4.10 differentials?
Unless you're adding bigger tires, your MPG are going to tank.
I'm getting great mileage right now. OCD maintenance will do that I guess. Lol.Unless you're adding bigger tires, your MPG are going to tank.
If I put 4.10 in my TB I will actually get MPG back due the larger tires.
On the c4s you either got a 2.56 or 3.08 with the 700r4 or manual. In later years the performance axle went to 3.31. For how you had to drive and shift for the old EPA tests it needed it.Partly because of offsetting the larger tires with the lower gear ratio. Makes it easier for the engine to get those tires moving. Can help with in-town driving when you're doing a lot more stop and go. Lets you get to the higher gears faster with less effort and actually keeps the average RPM lower. Then, depending on your tire size and gears, your cruising mpg may even be better because you're not downshifting so easily.
My old 98 Camaro gained something like 2 mpg highway going from the stock 3.08 ratio to 3.42, and that was even before a tune for the change and just doing the math to compensate for the difference. And it was better to drive around town too. Not sure why GM didn't just stick 3.42 in all of them, but whatever.