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How well will 4.10's hold up in my car.

This is a discussion on How well will 4.10's hold up in my car. within the Drivetrain forums, part of the LSx Technical Help Section category; Ok, I've been monitoring some of these rear-end threads for a while and I haven't found an exact answer to ...

  1. #21
    Member cobrahunter's Avatar
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    Ok, I've been monitoring some of these rear-end threads for a while and I haven't found an exact answer to my question, so here goes...I still have the stock rear on my car. I'm pushing about 360hp to the wheels (I also have 4.10s), but that will change when I put a new cam in. What exactly is it that wil cause the rear-end to fail (break) on me? I've heard before that owners even with stock set-up have had their rear ends go out on them.

  2. #22
    Member cobrahunter's Avatar
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    Oh, also, my car is my daily driver, so I don't push it like I probably would if I had another car.

  3. #23
    Senior Member camarojunky74's Avatar
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    it depends a lot on if your a4 or 6 speed, but i would say that if its still a torsen style carrier either the worm gears would fail or you would stip off all the teeth on the gears under a hard launch or acceleration, because you have 4.10s, just make sure you arent doing donuts or excessive tire spinning unless you want to destroy your driveline, donuts being the most harmfull to your rearend especially being a lsd style.

    my buddys car has a cam and 4.10s with stock rear and he has a 6 speed, his car was absolutely fine until he thru on some mt's and after that he stripped off all the teeth but luckily the carrier was still okay.

  4. #24
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    Stalled A4, 10 bolt with 4.11 gears. 37 tooth ring 9 tooth pinion is stronger than the 41 tooth ring and 10 tooth pinion.

    My best 60' so far is a 1.62 rolling off the line and punching it. When the ET Street radials are done I'll be putting slicks on it. We'll find out how quick the 10 bolt can go soon enough.

  5. #25
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Quote Originally Posted by camarojunky74 View Post
    it depends a lot on if your a4 or 6 speed, but i would say that if its still a torsen style carrier either the worm gears would fail or you would stip off all the teeth on the gears under a hard launch or acceleration, because you have 4.10s, just make sure you arent doing donuts or excessive tire spinning unless you want to destroy your driveline, donuts being the most harmfull to your rearend especially being a lsd style.

    my buddys car has a cam and 4.10s with stock rear and he has a 6 speed, his car was absolutely fine until he thru on some mt's and after that he stripped off all the teeth but luckily the carrier was still okay.
    Well lets see! I have over 150,000 miles on my Torsen w/
    4:10s! They are stronger than you think! I beat the shit outta my car everyday!

  6. #26
    No Compromise davered00ss's Avatar
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    430rwhp, M6 71K and no problems. I drive my car like I fucking stole it.

  7. #27
    Member cobrahunter's Avatar
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    Got it! I stay away from trying donuts. That little bit of FYI I'm good at following.

  8. #28
    Senior Member camarojunky74's Avatar
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    Quote Originally Posted by 9t8z28 View Post
    Well lets see! I have over 150,000 miles on my Torsen w/
    4:10s! They are stronger than you think! I beat the shit outta my car everyday!
    i didnt say anything about "your car is gonna break" i just simply gave my opinion that if and when it breaks you can count on those two thnings being the problem.

  9. #29
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Quote Originally Posted by camarojunky74 View Post
    i didnt say anything about "your car is gonna break" i just simply gave my opinion that if and when it breaks you can count on those two thnings being the problem.

    No, you said the Torsen was basically junk "nOoB". Once again, I have the same setup! I smoke the tires off, launch hard and do dougnuts on a weekly basis!
    NoOb!

  10. #30
    Senior Member camarojunky74's Avatar
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    Quote Originally Posted by 9t8z28 View Post
    No, you said the Torsen was basically junk "nOoB". Once again, I have the same setup! I smoke the tires off, launch hard and do dougnuts on a weekly basis!
    NoOb!
    okay, if would have read the post carefully or maybe you did and your just retarded, i never said that the torsen "was junk" i was just giving him the most probable things that would fail in such an occurance.

    also the torsen is the less superior in strenght style of carrier, obviously when slp offered a aubrun clutch style carrier it wasnt for looks or to say that you have an auburn their are advanages to having an auburn over a torsen, strength and better and more equal power transfer from wheel to wheel also.

    and secondly just because i have less posts than most or just joined this forum does not make me a "NOOB"
    besides having enough ASE's to make me a master tech, two ASE's are in driveline one being auto trans and the other being manual and differentials.
    and being an auto technician is how i make a living,

    third i have owned and worked on more cars than just my two camaros, my dads camaros buddys cars. customers cars... so suck it

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  12. #32
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  13. #33
    2 SS's are better than 1 Jays00ss's Avatar
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    I have motive performance 3.90's in my car and absolutely love them. I have a little more of a 1st gear. My buddy who used to work at a rear end shop put them in for me with the torque arm and subframe connectors for $150 bucks great deal!!! They are quiet as hell and I really dont hear anything because I am running LTs and an ory!!!
    3.90s might be a good alternative for you.
    2000 SS Camaro Heads, Large cam, Fast 90, 9"w/430's and locker, yada yada yada... you get the picture

    1971 SS ElCamino 402 Big Block 550HP

    2006 Silverado 2500HD 496 cubic inches of pure muscle

  14. #34
    Stang Reaper LS1Formula01's Avatar
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    I have had 4.10s in my car now for about a year and have probably put about 20k miles on them. No problems what so ever. However. I am getting rid of my Torsen lsd and putting in an Eaton locking posi (clutch style). Drag racing buddy of mine who has been in the sport for longer than i have lived ran the eaton locking posi in a 91 s10 that he threw a 396ci in with a 7.5 thats right a stock 7.5 rear end with a 4.10 gear and ran 11s time after time after time with it. he said it even felt stronger after putting in that diff.

  15. #35
    Junior Member HasselZ28's Avatar
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    Whats everyopnes opinion on putting 4.10 gears in a A4 ?

  16. #36
    Member cobrahunter's Avatar
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    If it's a DD, 4.10s on an automatic will increase your fuel consumption more than it would on an M6, and the rpms will run higher. If you're okay with that...go for it.

  17. #37
    Senior Member camarojunky74's Avatar
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    i just put my 4.10's in two days ago, since putting them in i already went to the 1/8 mile track yesterday, well all i can say is drag radials is my next thing and with my car burning out i managed a 1.9 60 foot on street tires and a 8.4 time like i said spinning quite a bit. but having the 4.10's took 2 tenths off my time, but with my buddy bringing me his drag radiaals on saturday and me going to the 1/4 mile track in fontana i am hoping for better!

    all in all freewaay isnt that bad im at 3k at 80. but the car is so much faster, it pulls a lot alot harder even from a rolling 80 it pulls better

  18. #38
    Member cobrahunter's Avatar
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    I hear you. Going from 3.42s to 4.10sthe gain was phenomenal. And with my M6, I'm doing 75 at about 1900 RPM.

  19. #39
    Evr sena bdgr killa snak? Roastem's Avatar
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    Hmmm...Moser and Strange are backordered from F-body owners buying rear ends, yet nobody here seems to have any problems? They usually don't sell 12-bolts to people with perfect 10-bolts.

    I dumped a shit-ton of money into my 10 bolt, and guess what, it is sitting behind my house after the diff crapped two huge bolts into my housing and busted it. Over and over. And fucked up practically new set of 400+ dollar 4.10's. Damn, I thought my friggin driveshaft was scrubbing the highway it was making such a ruckus.

    That was my SECOND set of 4.10's.

    Needless to say, she has a new 12-bolt in her pussy, and I should be finishing the install tomorrow. Moral of the story, a rear that cost 2500 ended up costing 4000 by not getting the 12-bolt when I should have.

    Who knows, you might be able to get away with it. Go for it, but be warned...

  20. #40
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    4.10's

    I've had Motive 4.10's in for about 10 months, I don't take it to the track though. Mine are a little noisy @ 50mph but I think the installer may have not set it up right but he did say Motives can be noisy. I really like the way the car pulls so I'm not complaining.

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