Quote:
Originally Posted by black_k5
Thanks hemi, I did not realize that even the master cylinder needs to match. Know knowing this I'm think I'm going to go back to the 1/2 ton axles. As long as the bearings can handle the 35's on 20inch rims then I don't see the point in using the 3/4 ton axles.
Hemi if I remember right your running 410 gears with 33s, would you suggest 456 for 35s for a good mix of around town driving and highway trips? Looking for the best gas milage
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With 35's I would definitely be running 4.56:1
That will put you just over 1800 rpm @ 60 MPH which is perfect. If you were to use 4.10:1, the engine would lug and you'd most likely end up with worse mileage.
That 12 bolt will be more than adequate. The only advantage to going to a bigger diff is for carrying heavier loads.
FWIW, I get 25 MPG (imperial) with my Blazer. Picture was taken past summer. 70MPH and reving just over 2000 RPM.