I already have a 11.5 Yukon R&P for the rear and I'm about to get the other 3 missing pieces. Before I push "buy", I wanted to run these by anyone here that may have advice/experience. The bearing kits change 2010+ and I want to make sure the 9.25" front R&P is reverse rotation.
I've done quite a bit of looking and I think I'm going to settle w/ the precision front R&P rather than Yukon due to the limited use my 4x4 gets. The overhaul kits also come with Koyo bearings rather than Timken and even though I feel terrible about not ordering Timken (due to living only 5 miles from a large plant they have in Canton), I've heard nothing but good results w/ Koyo's and the price is more attractive.
http://bumpersuperstore.com/i-11537838-precision-gear-gm9f456-gm-9-1-4-4-56-ring-pinion-ifs.html
http://www.mudnrocks.com/master-overhaul-kit-ifs-gm-9-by-precision-gear/
http://thejeephut.com/master-overhaul-kit-gm-by-precision-gear-p-27881.html#.UenDDI21GAk
I also may lower my truck a couple inches in the future & run 35" tires, but from the calculations I've done, I don't believe I'll be overgeared on the highway. There should only be about a 100 rpm difference at highway speeds if I drop my tires diameter in the future, as these 4.56 will get my effective gear ratio pretty close to the stock 3.73s on a 30.5" tire.
Any input would be greatly appreciated. Thanks in advance guys.
I've done quite a bit of looking and I think I'm going to settle w/ the precision front R&P rather than Yukon due to the limited use my 4x4 gets. The overhaul kits also come with Koyo bearings rather than Timken and even though I feel terrible about not ordering Timken (due to living only 5 miles from a large plant they have in Canton), I've heard nothing but good results w/ Koyo's and the price is more attractive.
http://bumpersuperstore.com/i-11537838-precision-gear-gm9f456-gm-9-1-4-4-56-ring-pinion-ifs.html
http://www.mudnrocks.com/master-overhaul-kit-ifs-gm-9-by-precision-gear/
http://thejeephut.com/master-overhaul-kit-gm-by-precision-gear-p-27881.html#.UenDDI21GAk
I also may lower my truck a couple inches in the future & run 35" tires, but from the calculations I've done, I don't believe I'll be overgeared on the highway. There should only be about a 100 rpm difference at highway speeds if I drop my tires diameter in the future, as these 4.56 will get my effective gear ratio pretty close to the stock 3.73s on a 30.5" tire.
Any input would be greatly appreciated. Thanks in advance guys.