Best T56 Magnum/ rear gear combo

[Sieg]

I should add that I went with an old school mechanic that specializes in differentials and used a Motive gear set. They are silent.....which was something I was worried about as I'd heard many a story of gear whine associated with the 3:73 ratio.

[Blake Foster]

Originally Posted by Sieg

I should add that I went with an old school mechanic that specializes in differentials and used a Motive gear set. They are silent.....which was something I was worried about as I'd heard many a story of gear whine associated with the 3:73 ratio.

Yes.................. Sometimes, we have switched to US Gear because of the inconsistency of the motive 3.73 sets.
we NORMALLY recommend 3.73 (seems to work for everything ) but I really liked my 3.89 gears

[Sieg]

Originally Posted by Blake Foster

Yes.................. Sometimes, we have switched to US Gear because of the inconsistency of the motive 3.73 sets.
we NORMALLY recommend 3.73 (seems to work for everything ) but I really liked my 3.89 gears

Interesting, the old-timer I use does nothing but ring and pinion work. Could be he just sets them up right.

Regarding the ratio it really depends on where and how you drive your car......and the other elements of the equation, power, power curves, trans ratios, and tire height.

IMO - It's really a personal preference that one needs to analyze and factor for themselves.