LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Rear Gears

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Old 09-25-2005, 08:22 PM
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Default Rear Gears

how much trouble is it to put a ring and pinion in the axle? im thinking of puting it in myself so im just wondering if its doable with household tools
Old 09-25-2005, 11:12 PM
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I want to knwo the same thing but ever time i ask i get the answer to 2+2 or somthing.
Old 09-26-2005, 12:58 AM
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I prefer to take the whole rearend out to do gears. A pinion depth gauge would be nice to have but it's not essential, a dial indicator for endplay is important. Make sure to get the full installation kit, which should have different sized shims and marking compound. This is somewhat of a trial and erreor procedure to finding the right shims for the pinion and carrier. It would be much better to have an old honed pinion bearing. When both the pattern and endplay are good the new bearing can be pressed in.
Old 09-26-2005, 01:47 PM
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I had my 4.10's done yesterday by an expert in his garage. It took him 4 hours and he a press and some other tear down tools. For how much its going to cost for gears, install kit, time, and swearing i'd say take them to a shop. Driveline-solutions in michigan does the install for $475 using AAM gears (dry cut for more strength) and there is no whine whatsoever
Old 09-26-2005, 01:54 PM
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Originally Posted by Fujimo84
I had my 4.10's done yesterday by an expert in his garage. It took him 4 hours and he a press and some other tear down tools. For how much its going to cost for gears, install kit, time, and swearing i'd say take them to a shop. Driveline-solutions in michigan does the install for $475 using AAM gears (dry cut for more strength) and there is no whine whatsoever
Do you have a stock rear end? I thought about putting 4.10's in my car that is an auto with the stock rear end. I have full bolt ons except for a torque converter, and once I get that I'll get sticky tires. Is that a good combo? Would the 4.10's cause problems?
Old 09-26-2005, 03:26 PM
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unless, you have a press and the tools to check the pinion depth, I would not attempt this at home. Me and my did put 3.73 gears in my stock rear at home, but we have a press and the pinion depth gauge and what not. It is a pretty involved process. If you don't have much experience or don't know someone who does i would not attempt it.
Old 09-27-2005, 08:04 PM
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I helped do two rear-end swaps..both LT1 F-Bodies going from 2:73's to 3:73's. If you've never done one, helped do one, or at least watched one being done, I wouldn't try it.

The guys I helped do nothing but repair/replace rear-ends 8-hours/day, 5 days/week on everything from cars, to tractor-trailers. They used a turned down pinion crush sleeve so they could do repeated "mock-ups" of the set-up to make sure the ring & pinion were "marking" correctly. Too much "mark" on the heel or toe, on either the drive or coast side of the ring gear, and you've got problems. Sure, it'll run...for a while. There's a definite "trick" to shimming up the carrier correctly. TIR for backlash, at least on the 10-bolt Eaton posi F-Bodies I helped with, was .008"-.012".
Old 09-27-2005, 10:07 PM
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Changing gears in a rear is not rocket science. A year ago I had never put a set of gears in nor helped anyone do it nor ever seen it done. I've put 2 sets in my car (actually reinstalling now with a spool) and one in my truck with no problems and no whining. There's enough info on the web that you can figure it out yerself. The main thing is to get backlash and wear pattern right. Do some research and you'll see it's not rocket science. The proper tools (press and dial indicator) do help out alot though.



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