Swapping 4.56 for 3.73 ratios
 

Hi all!

I'm looking to increase my top end on my M1031 by swapping the ratios (45mph in TX bites w/the Mexicans doing 70+). I know I need the carrier bearing (front & rear) as well as the gears themselves. What other parts do I need to swap?

Thanks in advance.

Me.

Re: Swapping 4.56 for 3.73 ratios
 

Get an install kit front and rear. Will have everything you need, minus R&P. Might have to but additional shims to get preload correct.

Re: Swapping 4.56 for 3.73 ratios
 

Have 3.55 carrier for a Dana 60, depending on your rear diff depends if to need a carrier swap. Carrier breaks are typically 4.10/4.56
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