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2013-14 Shelby GT500
Solid differential spacer results
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<blockquote data-quote="tomshep" data-source="post: 15081537" data-attributes="member: 8203"><p>I have seen many posts on gear whine. I thought I had seen a FEW 3.31 issues. However, it seems just about everyone going 3.73 or 4.10 ends up whining, some rather quickly.</p><p></p><p>Could it be due to the smaller pinion you end up with when going with lower gears? The twist on the pinion gear would be tighter and have less gear surface area to contact the ring gear. This may be part of the reason Ford decided to go with 3.31s. Maybe they also ran into whine with the 2012 3.73s when initial testing?</p><p></p><p>This is just a theory I am throwing out, since it seems so odd that regardless how well built an 8.8 is when gears are added they whine.</p><p></p><p>Tom</p></blockquote><p></p>
[QUOTE="tomshep, post: 15081537, member: 8203"] I have seen many posts on gear whine. I thought I had seen a FEW 3.31 issues. However, it seems just about everyone going 3.73 or 4.10 ends up whining, some rather quickly. Could it be due to the smaller pinion you end up with when going with lower gears? The twist on the pinion gear would be tighter and have less gear surface area to contact the ring gear. This may be part of the reason Ford decided to go with 3.31s. Maybe they also ran into whine with the 2012 3.73s when initial testing? This is just a theory I am throwing out, since it seems so odd that regardless how well built an 8.8 is when gears are added they whine. Tom [/QUOTE]
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