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what angle of driveshaft do i need

This is a discussion on what angle of driveshaft do i need within the Drivetrain forums, part of the LSx Technical Help Section category; im putting a UMI torque arm on my TA and was wondering what angle my driveshaft should be at and ...

  1. #1
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    medium blue metallic
    1999 trans am

    what angle of driveshaft do i need

    im putting a UMI torque arm on my TA and was wondering what angle my driveshaft should be at and all that jazz..any help would be awesome!

  2. #2
    Member Supershafts's Avatar
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    1971, 73,78, 85,92,95,

    1 to 1.5 degree difference than the shafts angle at the pinion in the negative side.

    So if the shaft is at 0.0 you want the pin pointing down 1.5 degrees.

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    Auto or manual? With an automatic transmission you run just a little less down angle than a manual. Negative 1.5 is generally the setup for an auto equipped car.

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    medium blue metallic
    1999 trans am

    thanks. i drove it last night and there was a pop/banging noise coming from the back. im guessing thats the issue.

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    Member Supershafts's Avatar
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    No a popping banging noise is not a angle issue

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    Member RichWS6's Avatar
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    Quote Originally Posted by Supershafts View Post
    No a popping banging noise is not a angle issue
    I had the same problem when I installed mine, I had a tunnel mounted arm on my 9" axle, turned out I had clearance issues in the tunnel. I went back to a transmission crossmember mounted arm and a new trans bushing and it went away for me.

  7. #7
    Member Supershafts's Avatar
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    See if you have the same problem as Richws6 mbmta99.

    A wrong pin angle will make a strong vibration or a strong shudder under load

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