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when it blows, what breaks?

This is a discussion on when it blows, what breaks? within the Drivetrain forums, part of the LSx Technical Help Section category; I hear about guys wrecking their 10 bolt's all the time. what is the weakest link? I think I heard ...

  1. #1
    Powerstrokin LT1 > LS1's Avatar
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    when it blows, what breaks?

    I hear about guys wrecking their 10 bolt's all the time. what is the weakest link?


    I think I heard somthin about how you break the carrier before the axles. what spline are stock 28?

  2. #2
    Powerstrokin LT1 > LS1's Avatar
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    seriously? I know guys here have blown up rear ends!!!!!!


    just tell me what broke!!!! please! I need to know what I need to do to go low 11's maybe high tens reliably.

  3. #3
    Senior Member Bottesini's Avatar
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    Quote Originally Posted by LT1 > LS1 View Post
    seriously? I know guys here have blown up rear ends!!!!!!


    just tell me what broke!!!! please! I need to know what I need to do to go low 11's maybe high tens reliably.
    Most of my experience is with 10 bolts from a ways back. What most often broke was the ring gear or pinion, usually would shear teeth off. To reliable get in the 11s I would think you need either a 12 bolt or 9"

  4. #4
    Powerstrokin LT1 > LS1's Avatar
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    okay, thats what I was thinkin. a built 4l60, and a new rear end.

    what would be better for an automatic car on nitrous? a 9", 12 bolt, or S60?

  5. #5
    Senior Member Bottesini's Avatar
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    Quote Originally Posted by LT1 > LS1 View Post
    okay, thats what I was thinkin. a built 4l60, and a new rear end.

    what would be better for an automatic car on nitrous? a 9", 12 bolt, or S60?
    I would think a 12 bolt will be fine for an auto. Since I have a M6 I am about to order 9".

  6. #6
    Sold: LS1 '85 El Camino ls1camino's Avatar
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    I've destroyed two ring gears...one I shot through the casing and the other I stripped 4 teeth off of

  7. #7
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    The 9' ford gets my vote. I have a 9' in my 69 nova with a 454 big block. Never gave me any trouble what so ever.

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    Junior Member 2blk2drs's Avatar
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  9. #9
    Powerstrokin LT1 > LS1's Avatar
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    well, heres the deal. I officially am gonna make it a 383, with mild heads, hot cam, and a 200 shot of nitrous.

    that shouldput me mid to high tens......

    and after checkin out the link, I think I will be better off with the 9". the 12 bolt and 9" are about the same price, so why not just overbuild it now, and never worry about it later right?

  10. #10
    Member 98ls1blackbird's Avatar
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    I put an Eaton 3 series posi unit 3.73 in my T/A, and it lasted three passes. On the fourth pass the side gear in the carrier broke broke in three places and the axle on the driver side spun, taking out the spider gears and posi clutches. The car only ran high 12's with 1.80 60' times. Auto with 3200 converter and M/T street radials. The 10 bolt 7.5" is definately a weak link.

  11. #11
    Member 01 SS Vert's Avatar
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    I ripped 5 teeth off the ring gear in a 10", and it was behind a 4.3L V6.

    Luckly, I have yet to have a problem with this one. I'm not going to upgrade till this one bites the dust. I think the hard lauches wears stuff out more so than just normal driving.

  12. #12
    Member jcws6's Avatar
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    Stripped two gears off aftermarket 4.10s in a stock 6-speed. No clutch dumps, no track use.

    My vote is for a Moser 9".

  13. #13
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    When i busted the 10-bolt in my trans am it destroyed the gears along with the carrier. Had i took it in before it blew i wouldnt have had to replace the carrier.

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