Roll call for the 1st Official Club - The 4.56 Gear Club
#11
about two/thirds of the way into the break-in you can push 'em a little, for short bursts, nothing sustained. Then let off 'em for a bit, then push them a little again. This actually aids in the heating/cooling that you need to break them in properly.
Then after getting that break-in fluid out, with the little metal shavings from break-in, it'll be time to drive it like you stole it...
Then after getting that break-in fluid out, with the little metal shavings from break-in, it'll be time to drive it like you stole it...
#12
Join Date: Jul 2007
Location: South Georgia/East Florida
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You want to completely baby them for about the first 250-300 miles, 5-15 miles at a time, no hard accelerating, keep 'em down around 2500 rpm and under, then let 'em cool for at least 20-30 mins. NO TOWING!!! From then till 500 miles, you can extend the run time up to 30 mins and mix in a little accleration, nothing severe, but an occasional bump up to 3600-3800 rpm is fine. Listen for any whining coming from the gears. Despite what you may have heard, there should be NO WHINE, your stock gears didn't whine, did they?
At 500 miles, it's time to pull the cover and inspect everything. Some very fine metal "powder" may be stuck to the magnet, this is ok and considered normal, but anything looking like shavings or actual pieces of metal is a big NO-NO.
If all looks good, put the lube in, RTV the cover, tighten her up and drive it like you just stole the summbiotch!!!
At 500 miles, it's time to pull the cover and inspect everything. Some very fine metal "powder" may be stuck to the magnet, this is ok and considered normal, but anything looking like shavings or actual pieces of metal is a big NO-NO.
If all looks good, put the lube in, RTV the cover, tighten her up and drive it like you just stole the summbiotch!!!
#13
Ok, thanks. Yeah, so far I’ve pretty much babied it. I’ve haven’t driven too far at one time, haven’t driven or accelerated too fast, and haven’t revved the engine too high. My stock gears didn’t whine at all, and so far, the new gears haven’t either. As far as I can tell, everything is good with my gears. I haven’t heard any noises, felt any weird vibrations, of felt the truck drive any differently (in a bad way).
#14
#15
Join Date: Jul 2007
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I would, since they are a pretty much "custom" install, with the backlash and everything having to be set, they may be contacting slightly differently. I'd still break 'em in to be safe...
#17
I would say around $1200-$1500. From what I’ve read on here, I’ve seen around $800-$900 on the low end, to around $2000-$2500 on the high end. I paid $2500 for mine, but that was for the gears and a Truetrac, plus unfortunately, there aren’t really too many options around my way for gear installs. And as for getting the gears done, technically, you can do just the rear, but it would be better to get both done, unless you want to save some money and don’t care about 4WD.