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LT1 | LT4 | L99 Engine Tech

Technical discussion for the LTx Gen II series motors.
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Lounge for general & off-topic discussion forum.
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4th Gen F-Body

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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  1. 96 Trans Am LT-1 vented opti shaft question

    LT1 | LT4 | L99 Engine Tech
    Just want to be sure when I put my opti in I "know" which hole to put the cam pin in on the cloverleaf. My question is does the opti center shaft have to go in a certain way like the splined drive, or does it just go in for balance ect in no particular way Im assuming there will not be a flat...
  2. Diagnose The Optispark

    LT1 | LT4 | L99 Engine Tech
    Since my car has been acting up here latley I've done a ton of research on how the ignition system works(opti icm coil ect...) I came across this video that ges details on how a opti aka abits works and how to diagnose it. It kinda bugs me in a way when ppl assume right off the bat when their...
  3. *Stock Head Cam/Cam Swap Guide*

    LT1 | LT4 | L99 Engine Tech
    **Stock Head Cam/Cam Swap Guide** Intro: It seems like several people every week want to know what cam is best for their stock headed/stock shortblock LT1/LT4 or what components they need for a cam swap; so this is a guide to steer all of you in the right direction and hopefully allow you...
  4. New Member Looking for a used Harmonic Balancer and a Crank Hub a 1996 Trans am 350 LT-1

    Parts For Sale
    Finally got time to work on my car a little. Let me know if you have any of these I would appreciate it. Tommy
  5. 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...
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