bravocharlie
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highway speeds, RPM only increased to about 2,200 to reach 70 mph. I am curious what kind of mileage it currently gets on the highway. Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Good name for it.
Scrap that weak ten-bolt, step up to a 14-bolt semi-float axle from a light-duty (6-lug) C2500.
3.73 will be very common, 4.10 somewhat less-so; but probably still "find-able" if you're willing to drive a ways to get one from a friendly Treasure Yard. You'll need the u-bolt mounting plates from the 14-bolt axle donor vehicle, a conversion U-joint, new U-bolts 'n' nuts, and whatever repairs the brake need. Pop the cover off, inspect the guts, re-fill with fresh axle lube. New axle seals recommended.
The only real issue is that you'd need 5-lug axle shafts to fit the 14-bolt SF. Available in the aftermarket, probably discontinued through GM.
That, or replace the wheels with 6-lug units, and front hubs to match.
That might be the best decision financially. I think I'll contact Yukon and get some part quotes generated.I would personally keep the factory rear end and re gear with 4:10 gears and a Eaton locker to get rid of the horrible g80 posi unit
Removing 10-bolts in favor of the "14 bolt semi-float" is nearly always a good idea--depending on the condition of the 14-bolt.That 14 bolt from a light 2500 seems to be the route to take.
Oiled-gauze air filter? Cleaning them before they NEED to be cleaned is the WORST thing that most folks do to them.Air filter can use a clean and oiling.
If they're not 9.5" ring gear units, you're wasting time, money, effort, and enthusiasm. In particular, the one that's specifically listed as a "1500" is probably a weak 8.5" ring gear job, although being from a Suburban, it might be a weak axle with the better, 11.x Duo-Servo brakes.You must be registered for see images attachFound these two rear ends. What y'all think?