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Strengthening the 7.5 rear.

This is a discussion on Strengthening the 7.5 rear. within the Drivetrain forums, part of the LSx Technical Help Section category; Originally Posted by Wesman Not really. Mods like tubular trailing arms and torque arms reduce both rear end deflection and ...

  1. #21
    Senior Member INMY01TA's Avatar
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    Quote Originally Posted by Wesman View Post
    Not really.

    Mods like tubular trailing arms and torque arms reduce both rear end deflection and wheel hop, which definitely prolongs the life of the rear end. Keeping movement to a minimum reduces stress on all the components.

    Mods like a rear end girdle ($150), Moser axles ($250/set), and using quality synthetic gear oil can really make a big difference as well. Those are cheap insurance against blowing a rear on the street, if you're serious about going to the track and launching at high RPM or on DR's or slicks, obviously the 7.5" is not going to be adequate.

    For most guys who drive their cars on the street though, the 7.5" gets the job done. If you invest a few hundred in the above mods, and don't drive the car like you're on a mission to blow the rear at every stoplight, it should survive plenty of street driven miles and the occassional run at the track.
    Yes eliminating wheelhop is good, if you have wheelhop to begin with. Dead hooking is definaetely harder on the rear. The girdle is useless imo except for the drain plug and looking cool. Synthetic fluid is not recomended
    by Moser or Strange and is not necesary.

  2. #22
    Rice Killa JwMonE99's Avatar
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    The girdle doesnt help as much as the others,
    The only reason why I got it becasue it was included in a deal I got.
    The girdle, LCA, and the panhardbar for $250

  3. #23
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    TSP 347 SB, TSP Stage 2.5 PRC LS6, TSP MS4, Performabuilt Stage 2 4L60E, Yank PT4000, 4.11s, Fast 90/90, FTRA Cold air intake+all the free mods, Dynatech Supermaxx Exaust System, DMH Cutouts, Hooker Catback/FTRA Tips. Tuned by RPM/Garner NC. 11.28@119

  4. #24
    2 SS's are better than 1 Jays00ss's Avatar
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    00 SS / 71 SS Elcamino

    Quote Originally Posted by PFM View Post
    After seeing 3 of my buddies break theirs and countless others I didn't know, with stock to 475 hp cars, I wasn't going to risk it. 9" for me.

  5. #25
    Rice Killa JwMonE99's Avatar
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    Good suspension wouldnt break it that easy

  6. #26
    Senior Member Bottesini's Avatar
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    Quote Originally Posted by PFM View Post
    Quote Originally Posted by Jays00ss View Post
    After seeing 3 of my buddies break theirs and countless others I didn't know, with stock to 475 hp cars, I wasn't going to risk it. 9" for me.
    Quote Originally Posted by JwMonE99 View Post
    Good suspension wouldnt break it that easy
    It really seems to be a crap shoot as to how well they will hold out. I have seen both ends, some that hold up and should not have while others break very easy. Personally since I DD my car I don't want any downtime from a rear breaking, so the 9" will be ordered in a few weeks

  7. #27
    O U 8 1 2 Spaz's Avatar
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    Quote Originally Posted by Jays00ss View Post
    ok spend $1000 on "Stregthening" your piece of shit 10 bolt and when it Breaks (It eventually will if you intend to have fun) you would have been 1/2 there to a much better rear that would last a life time.

  8. #28
    Senior Member INMY01TA's Avatar
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    Quote Originally Posted by PFM View Post
    Lmao. You just can't polish a terd.

  9. #29
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    onyx black
    1999 formula firebird

    A4 or M6 makes a huge difference...and i was launching at 6k WITH SUMMITOMOS the last one i broke i side stepped the clutch in 2nd gear at 3K and the auburn pro series diff puked out the spider gears...and that was on summitomos as well...screw the 10 bolt...you can keep builidng them or BABY the 10 bolt and then save for the 12 bolt -9 inc you will need..

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