lots of good info fellas! thanks
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tools needed for rear end work..
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Originally posted by fbodyjohnny View Posthm. i might just look into buyin a junker, then i could take care of business while chillen in the hot tub drinkin beer lol. but seriously, thank you for the info, so the tools,
press, or access to one, dial indicator, magnetic base, and a hell of a long 1/2 inch drive breaker bar to crush the sleeve. everything else is just good old fashion sweat and bloody knuckles right? also, i bought a new trak-lock diff, any specific gadgets needed for that?
And oh yeah, you will want a 12 point socket for the pinion flange.
A couple of big huge truck jackstands really helps where a lift won't make it, but you can do it with just two normal stands in the back if the front is stock height.
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Originally posted by fbodyjohnny View Postring gear runout?
Throws the backlash way the hell off in any place except the one that is measured.
Deburr both as best you can, and be clean about putting the gear on the carrier. Think of it like putting a head onto a block without a gasket. One little piece of debris and it is hosed. Torquing all the way as you put each bolt in and it is hosed. Use an impact set at high and go around it like a nascar tire changer and it is hosed. Common sense man, you will see.
To doble check, you measure runout in almost the same fashion as backlash. You measure the difference in "wobble" at different pionts on the gear as you spin the carrier. Any is no good. It will mean that your backlash varies as you drive.
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Originally posted by Bassics View PostWarping of the ring gear from tightening it in one pass with an impact.
Throws the backlash way the hell off in any place except the one that is measured.
Deburr both as best you can, and be clean about putting the gear on the carrier. Think of it like putting a head onto a block without a gasket. One little piece of debris and it is hosed. Torquing all the way as you put each bolt in and it is hosed. Use an impact set at high and go around it like a nascar tire changer and it is hosed. Common sense man, you will see.
To doble check, you measure runout in almost the same fashion as backlash. You measure the difference in "wobble" at different pionts on the gear as you spin the carrier. Any is no good. It will mean that your backlash varies as you drive.
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If you cannot get the carrier in place even without any shims on the passenger side bearing, then your pinion depth is way off (it is sticking too far out) for some reason.
And don't mix up the ring and pinion.
Check the runout. It should not vary. If it does then it may be the ring flange on the carrier is worn somehow. I saw this twice with 31 spline track locks with 4.30s that had the pin shaved to fit. It is hard to find a machinist who will even attempt to fix it, but they can, I have seen it.
Compare backlash at several points, just because it is good in one place doesn't mean it is good all over.
Drive it a little bit and then crack it back open. Look for bearing shims that are trying to slide out. That is a sign you didn't get the carrier in tight.
Noise and vibration shouldn't really be present, although it depends on the car, high ratio gears can make a lot of heat and start a whine that takes time to notice.
If you dump the clutch at 7k on the line and the front end lifts, you crfeam your pants in joy, and then this gawdawful bang goes off and the car just sits there, you have a shattered carrier. You generally must start over.
If you hear noise from the side, especially going around corners, look at the ABS exciter ring and the sensor, it may be rubbing.
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Originally posted by fbodyjohnny View Postexcellent! idk if my 306 & paxton 1000 will get it up even with slicks though. havent dyno'd it yet, but its also got trickflow heads, PP intake manifold and hookers, boost around 6. definitely faster than my previous car, 356whp 363wtqe cobalt ss.
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