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  1. #1
    Junior Member
    Join Date
    May 2009
    Location
    Livonia mi
    Posts
    33

    blue
    1999 trans am

    throttle body size

    I believe the stock size throttle body is 75 mm for my 99 ta if i go bigger to a 85 mm will i need any adapters? Or will it fit right up also is it the same if i get a larger maf sensor?

  2. #2
    Impounded
    Join Date
    Oct 2007
    Location
    Beaver Dam KY
    Posts
    7,745

    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Stick with the stock stuff until you are ready to go with the FAST intake(90mm) gains are minimal and a ported TB and the stock MAF are the way to go.

  3. #3
    Veteran Hi-Po's Avatar
    Join Date
    Nov 2005
    Location
    Florida
    Posts
    10,467

    Black
    1999 TA WS.6

    Wheather you change anything about that area, the bellows ( assume this is what your asking about) will fit. With my 92mm FAST and 92mm PTM TB.... they fit. Its really tight, but it works. Dont worry about changing the MAF out. No gains, money better spent else where.

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