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4.33 to 4.17


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would it be worth it to change out my 4.33 to 4.17? '00 Rb 460 18 eaton. the rears are on hendrickson rubber block. my Rw has 4.42(camelback), if i could I'd put the 4.33 in it. any help is appreciated. try to decide to buy new truck or spend some momey on old Rb? Bobo

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my bad your right 4.35 202/203 is what i have. no im not really looking for speed but rpm drop.my next step would be 3.94? i wouldnt be upset if i had to change it eatons. im a little dumb when it comes to diff's

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I not sure what your using the truck for but 4.17 with a mack 13 speed and low pro 24.5 will get you 80 mph at 1900, in the ch I ran, so the eaton 18 speed would be about 2100 at 80 I thank with low pro 24.5, I belive the mack tranny has a bigger overdrive than the eaton.

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