define "built 10 bolt"
i appreciate all the replys / opinions. its a tuff decision for me since adding a quality part that costs 3k but doesnt add any value to the resale price of my car (not that i'm selling anytime soon). hearing your replys reminds me of back in high school i had a 74 GTO and at first i kept sticking in junk yard engines which kept breaking. the finally had a speed shop build a budget 455 which ran great (under 5k rpms). i'll check around for any local shops that have some expeirience with 10 bolts, but if its going to cost more than 1k i'll save for a year or 2 and pop for the 12 bolt. THANKS EVERYONE!
TECH Fanatic
Joined: Sep 2004
Posts: 1,124
Likes: 1
From: Las Vegas
Weld the tubes to the center = $50
Straighten housing after the tubes being welded = $150
Aftermarket axles = $250-800
Posi, locker, spool = $250-500
4130 yoke = $189
Solid crush sleeve = $35
Gearset = $200
Cryo gearset = +$350
Micro gearset = +$250
Useless "TA" cover = $150
ARP studs for main caps = $45
Steel billet main cap = $65
That equals $2259. So do you think a 9" or a 12bolt makes sense now ??
Now you
for not having a sense of humor. i have blown up motive 3:73's richmond 3:73's 2x auburn pro series diffs * avoid them!!* and am back to a stock 10 bolt iwth 3:42's ..and after all that i do not race and will not race my formy until i get a 12 bolt moser or a strange SD60.. but to answer your question here is hwat i did when i had * bulletproofed* my 10 bolt...
forged Moser axles 28 spline
new seals, bearrings,
3:73 richmond gears
Auburn pro series differential
TA Girdle
Royal purple gear oil..
and after all that.. i am back on a stock 10 bolt..good luck wiht your build tho!!
forged Moser axles 28 spline
new seals, bearrings,
3:73 richmond gears
Auburn pro series differential
TA Girdle
Royal purple gear oil..
and after all that.. i am back on a stock 10 bolt..good luck wiht your build tho!!
Ok.
Weld the tubes to the center = $50
Straighten housing after the tubes being welded = $150
Aftermarket axles = $250-800
Posi, locker, spool = $250-500
4130 yoke = $189
Solid crush sleeve = $35
Gearset = $200
Cryo gearset = +$350
Micro gearset = +$250
Useless "TA" cover = $150
ARP studs for main caps = $45
Steel billet main cap = $65
That equals $2259. So do you think a 9" or a 12bolt makes sense now ??
Now you for not having a sense of humor.
Weld the tubes to the center = $50
Straighten housing after the tubes being welded = $150
Aftermarket axles = $250-800
Posi, locker, spool = $250-500
4130 yoke = $189
Solid crush sleeve = $35
Gearset = $200
Cryo gearset = +$350
Micro gearset = +$250
Useless "TA" cover = $150
ARP studs for main caps = $45
Steel billet main cap = $65
That equals $2259. So do you think a 9" or a 12bolt makes sense now ??
Now you
for not having a sense of humor.Thanks.
And being that this isnt a humor thread, i dont understand where humor comes into play.
I can't believe how retarded some of you guys are. He doesn't have a 700rwhp M6 turbo car that he drives around on the street with slicks. HE ALMOST NEVER RACES THE FU@KING CAR!! He's not gonna break his 10 bolt cruising around on the street in a near stock A4 car that he ALMOST NEVER RACES.
I can't believe how retarded some of you guys are. He doesn't have a 700rwhp M6 turbo car that he drives around on the street with slicks. HE ALMOST NEVER RACES THE FU@KING CAR!! He's not gonna break his 10 bolt cruising around on the street in a near stock A4 car that he ALMOST NEVER RACES.
Are you his father or something?
It looks like there are enough opinions and facts here and in some links put up. He should be able to read through it all and make a desicion on his own.
TECH Fanatic
Joined: Sep 2004
Posts: 1,124
Likes: 1
From: Las Vegas
I can't believe how retarded some of you guys are. He doesn't have a 700rwhp M6 turbo car that he drives around on the street with slicks. HE ALMOST NEVER RACES THE FU@KING CAR!! He's not gonna break his 10 bolt cruising around on the street in a near stock A4 car that he ALMOST NEVER RACES.
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Verdad Gallardo Fu@k it, just go spend $3000 on a 12 bolt. Maybe my 10 bolt is some experimental titanium factory freak rear. I can't believe all you 13 second A4 f@gs are breaking your rears on the street, maybe your cars make more torque than mine...
TECH Fanatic
Joined: Oct 2007
Posts: 1,129
Likes: 0
From: Ventura County, California
If you want to save money buy Stranges S60, it is stronger than the 12 bolt or 9" and costs less than either however it weighs slightly more, but is also more efficient due to better pinion placement in reference to the ring gear and in my opinion would offset the weight with less power loss. 
As far as "building up" a 10 bolt, it really doesn't matter what posi or axles you place inside this rear end. The small gear set is the weak link and there is nothing you can do to improve the strength of that.
As far as "building up" a 10 bolt, it really doesn't matter what posi or axles you place inside this rear end. The small gear set is the weak link and there is nothing you can do to improve the strength of that.
TECH Fanatic
Joined: Sep 2004
Posts: 1,124
Likes: 1
From: Las Vegas
Who's the 13 second A4 f@g again ?? Retarded is as retarded does... so dont include me in your assumed finger pointing.
OK, everyone who owns an f-body (even V6's) should throw their 10 bolts into a garbage heap, and pony up the cash for a 12 bolt/9"/S60 regardless of whether or not you race your vehicle. Thank you.
TECH Fanatic
Joined: Oct 2007
Posts: 1,129
Likes: 0
From: Ventura County, California
I've broke a 10 bolt on street tires more than once, put any power or shock this gear set good and it is going to break teeth off of the pinion or ring gear.
I agree with the other member, trash can that rear end and get a 12 bolt, 9" or S60.
I agree with the other member, trash can that rear end and get a 12 bolt, 9" or S60.
I'm an A4 car and I have had it for the past 4 years. my first car and im 20 now. the rear-end is still the stock one from when it was bought at the dealership. I ran 3:73 for a year and a half and i dog-
the hell out of the car 121k miles on it now im full bolt-ons and the most ive ever had to replace is bearings. Do 10-bolts suck.... No. Can they handle power....No. you can't expect much from a rearend that was ment for a v-6 S-10. And wheel hop can be fixed with proper suspension.
the hell out of the car 121k miles on it now im full bolt-ons and the most ive ever had to replace is bearings. Do 10-bolts suck.... No. Can they handle power....No. you can't expect much from a rearend that was ment for a v-6 S-10. And wheel hop can be fixed with proper suspension. 
last year i built my 10 bolt: moser 28 spline axles, eaton posi, richmond gears, lpw cover and the welded tubes. it probly would have lasted forever if i didnt race it. first night at the track i bent the housing and the axles were rubbing on the tubes. i had$1000 into that gutted it and sold it for $850. just bought a moser 12 bolt richmond gears, moser spool, and 33 spline moser axles with a t/a cover. i have been to the track numerous times and it still is running strong. spent $3000 on this one after getting brakes and driveshaft made. if your not going to race it at all then a 10 bolt will work fine. as soon as you start launching it and hooking its gonna break.
Registered User
Joined: Oct 2007
Posts: 6
Likes: 0
everbody throws bad comments on 10 bolts hey there tech guys theres to much hype scarring the pants off 10 bolt drag strip m6 guys if u have auto really there no worry low 12 high 11 here the fact is everything gets weak and wear and break that normal even 12 bolts also 12 bolt wiegh a lot more and is to much $$$$$ ///// im a m6 guy and wheel hop is the norm almost rarely so on that note ive seen 12 bolts brake so when to the strip buy a set handy used low miles 10 bolt posi unit and axles if ur race strip guy or if ur non regular guy to the drag strip then with m6 or auto use street tire and never dump m6 clutch 4k youll amost never have a issu also do your own labor on rear posi unit install its really not hard ive did my own almost every time on my gear upgrades and rember that you can buy used posi unit with axles for dirt cheap with super low miles //// make no mistake gm unit and axles are strong but wee beet the hell out of them and make them brake /// also if u guys think 12 bolt dont brake they do its called wear and tear and for replacement parts there over priced $$$$$ 
Registered User
Joined: Oct 2007
Posts: 6
Likes: 0
one more comment were talking about wear and tear why do wee replace our clutch and water pumps on our ls1 because they wear out now drive the hell out of 10 bolt is wear and tear on 10 bolt dont wait till it brakes and give it a bad rap replace it when you feel u beate the hell out of ur 10 bolt posi unit and replace it with fresh new one
