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Old 02-12-2010
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2007SaleenS331 2007SaleenS331 is offline
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Join Date: Nov 2008
Location: Billings,MT
Posts: 124

Originally Posted by SoKleen View Post
my truck has 60k miles on it and I just got some 4.56 gears to put in. do I need to put in any kind of rebuild or master rebuild kit when I do it? and what kind of rear end gear oil you guys suggest?
I would install the gears with a new bearing kit and new axle seals. You should get a shim kit for setting up the ring and pinion. The master rebuild kits will come with a shim kit. I would use the Ford synthetic gear lube with 2 little containers of friction modifier for the limited slip differential. Another good gear lube choice would be Mobile 1 or Amsoil synthetic. I had 4000 miles on my S331 when I installed the 4.56 gears and we rebearing it.
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