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08-21-2008, 07:11 PM
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#1
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Join Date: Jan 2008
Location: Aberdeen,nc/columbus,nj
Posts: 1,449
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10 bolt question
whats the weakest component of the stock rears on the 4th gens? i would like to upgrade the axles and posi unit so it can hold more power for when i do my engine mods down the road.
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Eric
07 Silverado 1500 5.3
01 Z28 6 speed
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08-21-2008, 09:40 PM
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#2
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10 Second Club
Join Date: Aug 2005
Location: lake hopatcong
Posts: 331
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Quote:
Originally Posted by emolineaux
whats the weakest component of the stock rears on the 4th gens? i would like to upgrade the axles and posi unit so it can hold more power for when i do my engine mods down the road.
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imo dont waste your cash on a stock rear. save and get a bolt in from moser or ktre. i put the best of everthing in a stock rear and still blew it up. i personally have the moser 12 bolt and its great. ive got over 450 runs on it, usually my 60ft times are 1.36-1.40.
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08-21-2008, 10:07 PM
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#3
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by emolineaux
whats the weakest component of the stock rears on the 4th gens? i would like to upgrade the axles and posi unit so it can hold more power for when i do my engine mods down the road.
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It's designed for a Chevy Vega. That's why it's weak. The whole thing is really undersized for the car. You will need a new rear when you mod your engine up.
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08-21-2008, 10:31 PM
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#4
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Queen of Destruction / NJFBOA Supporting Sponsor / Moderator / 12 Second Club / 2006 Member of the Year / PITA
Join Date: Aug 2004
Location: I dunno..
Posts: 8,327
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listen to these guys..
1st thing to go: rear
next: driveshaft
after that: everything else. 
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We're a drinking team with a racing problem.
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08-22-2008, 02:30 AM
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#5
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Join Date: Nov 2007
Location: Jackson, NJ
Posts: 1,718
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ring and pinion gear size is one of the biggest issues, not much you could do there to the stock rear
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1983 camaro- Scrap
1988 camaro- Also scrap
'05 Silverado- You guessed it, scrap
1988 TRX 250R- Ported w/ high compression on 110 octane- Out 60' your LT1
Jersey Shore Street Car Takeover (JSSCT) Founder
Quote:
Originally Posted by LS1ow
and once i get PHB, what do i ajust it too?
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Quote:
Originally Posted by Jersey Mike
Seven.
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08-22-2008, 09:53 AM
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#6
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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How much power are you talking about?
The rear is basically junk, any real HP will kill them quickly! Some people are running slicks and they last, but they are really the exception!
The case is small and can't handle large/stronger gears/posi. The case is thin and flexes which destorts the clearances, The axle tubes flex where they mount to the punkin, the axles are small and twist, etc etc etc.
if you have bolt ons and street tires then an aluminum cover it a good upgrade. It helps prevent the case from flexing as well as holding the bearings in place. But once you start making over 325HP or hooking you're going to start breaking parts.
I've done all the upgrades, Welded the tubes, HD posi until, T/A cover, Bearing to replace crush sleeve, GM Motion gears. I'm at almost 500 HP and even on street tires I've burned up a cone style posi, split a racket type in half on the 2-3 shift and snapped an axle.
And once the rear is upgraded or you hook, you're going to twist the driveshaft until it breaks. (broke them too!)
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
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08-22-2008, 11:20 AM
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#7
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2007 Member of the Year
Join Date: Oct 2004
Location: Seabrook, TX
Posts: 14,281
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Any real power? Try any power... my V6 is on its 3rd 10 bolt...
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WF=DF
Kommandant of the ACL (Anti Canadian League)
Quote:
Originally Posted by LTb1ow
Junk the pos, spend the money on beer, acquire headache.
Same result cept this headache doesnt last months.
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08-22-2008, 07:13 PM
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#8
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
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The problem is the one gear is pulled away from the other and from that they kinda destroy themselves.
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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08-23-2008, 04:23 PM
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#9
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11 Second Club
Join Date: Feb 2008
Location: Edison, NJ
Posts: 4,619
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its junk. just save for a 9in/12 bolt or dont beat on it, at all...
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1999 Z28 Convertible. 6 speed swap, wide cowl hood, full hockey stripes, and a whining 10 bolt.
2008 Sierra Vortec Max. 6.2 swapped, headers, Magnaflow catback, GMPP CAI, NHT optioned tow package.
2006 GTO, 11.48 @ 118.3
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