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Engine help....

This is a discussion on Engine help.... within the Computer & Tuning forums, part of the LSx Technical Help Section category; Not sure if this is the right place.. as I have a few questions... I just bought an 87 Trans ...

  1. #1
    ArtistFormerlyKnownAsMac Silver Streak's Avatar
    Join Date
    Apr 2006
    Indianapolis, IN

    All Black
    83, 87, 02 All WS6 T/As

    Engine help....

    Not sure if this is the right place.. as I have a few questions...

    I just bought an 87 Trans Am that supposedly the owner put in a 383 out of a truck. Now I haven't pulled it yet to run the numbers... but I am assuming it was not done correctly...

    They put the stock TPI manifold back on.

    Did the Chip need to be swapped out?
    Did the injectors need to be changed?
    Did the Throttlebody need to be upgraded?

    What SHOULD be done going from a 305 to a 383... so I can make sure this engine is done the right way.

    1983 Black WS6 "WindCharger"
    1987 Black WS6 "WS87"
    2002 Black WS6 "Silver Streak"
    Sold the other four f-bodies

  2. #2
    Senior Member mrr23's Avatar
    Join Date
    Jul 2005
    orlando, fl

    dark bowling green
    2000 corvette

    the chip would need to be modified to get it running correctly.
    1987 had 22# injectors. to run a 383 i was using 24#.
    i upgraded to a 52mm on mine.

    also, i was using the holley stealthram

    here's my webpage on my 86TA i used to have.

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