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LT1 | LT4 | L99 Engine Tech

Technical discussion for the LTx Gen II series motors.
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1993-2002 Camaro and Firebird/Trans Am specific tech.
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Say hi & tell us about yourself and your car here. New users are encouraged to post here first before accessing the other forums
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General Tech

Basic & general automotive tech discussion. For anything not specifically related to a particular powertrain or vehicle platform.
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  1. HPTuners programming for dummies

    PCM tuning & Computer Diagnostics
    Here is some info help you guys get started tuning with HPTuners. Credit to ozorowski, Keith from HPT, and WS6snake-eater from HPtuners bulletin board for compiling this basic info. DISABLE ALL TORQUE MANAGEMENT Your a hardcore racer now why do you need a computer to tell you how much power...
  2. Lt1 new optispark wont start help!

    New User Introductions
    Hi. I have a 1996 Lt1 in my chevy pick up. Just replaced the optispark . Lined it all up and everything, put water pump ect. back , tried to start it up but wont start. I'd really appreciate any advice anyone can give me.
  3. Best Upgrades for LT1 on Budget

    LT1 | LT4 | L99 Engine Tech
    i just bought a 97 ws6 with 87k on it.... I have about 3k left to spend on it before summer hits and id like to hit 450-500hp mark without spray if possible.....give me some options im open to any and all suggestions Cat Back/Dumps Headers CAI Cams Heads Intake Manifold ETC.
  4. are 1.6 rocker arms worth it? read more inside

    LT1 | LT4 | L99 Engine Tech
    I was just wondering what are some performance modifications that wont affect daily driveability too much or cost way too much but increase the power output my car would be? are 1.6 rocker arms worth it? how much power do they add and what does it do? could i install it or how hard would it...
  5. 4l60e trans not shifting past 2nd gear!!!

    Automatic Transmissions | Torque Converters
    hey everyone, I tried searching around the forums for my issue. The closest I found was not shifting at WOT. I figured I would ask just in case. I have a 95 Z28 auto with about 125,000 miles on it. Out of no where the car shifts fine from 1st to 2nd, but does not go any higher than 2nd...
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