Duramax Diesels Forum Truck of the Week
  #61  
Old 03-30-2018, 07:30 AM
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factory gears always setup the best imho but ive never had much issue with Yukons. i just setup a set of used yukon 5.13 gears for my ford 8.8 going from stock 3.73. only needed .004 more pinion depth and off set the ring gear to the driver side .0012 from factory shims. pattern is dead nuts center and great depth into the tooth. to get a used gear to setup like that is hard to come by.
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  #62  
Old 03-30-2018, 09:05 AM
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Originally Posted by jpowel29 View Post
Any noticeable differences between the Yukon gears vs going back with the AAM gears - as far as quality/durability and gear set-up?

I've run the Yukon 4.56 and 3.73 gears in other set-ups. Was thinking about getting AAM if I decide to do this swap.
AAM are stronger. Sled pullers have proven this but unfortunately aam has discontinued the ratios most commonly used in pulling. I think they still make 3.42 3.73 & 4.10

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  #63  
Old 03-30-2018, 09:11 AM
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don't know sh!t about IFS

 
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Originally Posted by ikeG View Post
AAM are stronger. Sled pullers have proven this but unfortunately aam has discontinued the ratios most commonly used in pulling. I think they still make 3.42 3.73 & 4.10

Sent from my XT1585 using Tapatalk
i dont think strength will be the issue in a 3.42. pinion is getting larger and still plenty of meat on the ring gear. under 3.0 might be an issue. i could definitely see where the AAM are stronger in a sled pull in the 4.56 gear ratios.
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Originally Posted by JoshH View Post
Mike L is my role model. I want to be like him when I grow up.
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
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