USA Standard Gear (ZG GM8.5-342) Ring & Pinion Gear Set for GM 8.5 Differential

Works great in my ford 8.8 zero noise and good quality

These gears appear to be good quality and the wear pattern looks the best I've ever seen after adjustment. I have a 12 bolt 8.875 GM truck rear in my '67 C10. All 3 of my C10's, '67, '68, '69 2wd trucks had 3.08 factory installed gears. I guess because of only a 3 speed auto trans in my '67 and '68, it was better on the highway. My '69 is a 3 speed manual. I decided that since I built a 383 stroker small block and installed a 3000 rpm stall converter in the TH400, due to the cam profile, I would replace the 3.08 geared, one wheel peel with a 3.73 gear and a Spartan "lunch box" locker. I'm just about to fire this thing up in a week or two. Just waiting on the machine shop to do the final piston fit honing and it ready to assemble, stab it in, hook everything up, start it up, and hold onto my hat.But I digress. Sorry, lost track. Anyhow, changing the gears from 3.08 to 3.73 I obviously had to re-shim my carrier to move it to the left. The factory shims were just about equal from one side to the other. Left being a .230 and right being a .243 thickness. I had to bring my left side to .445 and the right only has .024 gap in order to get my .006-.010 backlash needed for a good pattern. I even had to shim my pinion an additional .030 just to get it right. It's not quite a tight fit as factory, but I don't have a housing spreader and the 3 very thin .008 shims were giving a fit without trying to fold over on me. I don't think .004" is going to give me any trouble. Especially with the Moser girdled diff cover I'm using.Okay, here's the issue I ran into. Being that I needed to shift the carrier over almost a quarter inch, the right side of the carrier was hitting the area just outside and to the front of the bore for the carrier bearing. So, I removed the carrier and used a dremel tool to slightly grind the carrier housing on the four 'corners' where the bearing is pressed on. I took off about .100" on each edge and it then fit like a glove. I got my backlash to .008". Installed the yoke with a new crush sleeve and torqued the pinion nut to 11 in.lbs. Re-installed my carrier and torqued the caps to 60 ft.lbs. and installed the diff girdle cover.Hint to the next guy that decides to rebuild a differential. Purchase some cheap new pinion bearings in addition to the bearings that you are going to install. Grind the inner race of the cheap bearings so they slide over the pinion without being pressed on. This will save a bunch of time and frustration when adjusting or shimming the pinion depth. When it's all clocked in, just remove the dummy bearings and press the final good bearings onto the pinion. Oh, btw, the spartan locker is a pain in the butt to install with the diff housing in the vehicle. If possible, remove it and set it on a bench or jack stands with the yoke facing the floor. It's much easier to articulate the c-clips this way as long as you hold your tongue right. Good luck

Great for the money

Really liked how it works pushes with no problem bought the whole kit easy fit and installment although one screw came loose in the inside it started to spin around inside and as I was running and turning 2 teeth broke off so had to redo everything again was really upset I didn't bought warranty so I recommend you buy to get it when you buy it.

Quality ring and pinion gears. if you are going to change out your ring and pinion gears dont forget to purchase seals and bearings

Apparently, you cannot say you received the wrong product in the product review or mention that receiving the wrong product has led to missing a deadline to have the vehicle fixed. So, I will give a product review per guidelines. The product was manufactured very poorly. In fact, so poorly that the fins on the on the ring gear are pointed in the wrong direction. The center of the ring gear was also measured carelessly as the center is too big. The pinion had similar manufacturing defects and does not properly fit a Dana 30 JK. The shop manufacturing these gears needs much better-quality control, as the product is so far from acceptable tolerances it gives the appearance of being the wrong product, but of course I can't talk about that, so I will just have to assume this is all the result of poor craftsmanship.

These gears are just fine. They did the job on my 2004 dodge Dakota 9.25 4.56. I’ve driven them for over 50,000 miles and seem to be doing fine. They do make a little noise but that could be because I installed them and I’m not a professional however I’m happy.

Perfect replacement for the gears that were damaged when I threw a bearing. For the most part, it was easy to install and replace the old chewed up gears. They are heavy and well made! Quality seems to be a priority.I bought the bearing and shim set to go with the gears, now the ride is quiet and smooth.

Oportunidad en el precio

Installer said they set up really nice and the cut on them looked top notch! So far very satisfied with purchase. Big improvement over stock 3.42's

Awesome gear set. Installs easily, machining is great and specs are bang on.Not a job for the average Joe to install, but quality parts make the job easier for those that can handle it.For the price, and fit, can’t be beat!

Excelente para Tahoe

Aún no se ha instalado, pero espero y cumpla con lo requerido