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Gen VI 454 ignition timing after overhaul

Discussion in 'GM Powertrain' started by McMaster, Mar 26, 2011.

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  1. McMaster

    McMaster New Member

    I'm in the middle of overhauling a 1996 gen VI 454 and I'm trying to figure the best way to set the ignition timing: Should I set it to #1 TDC on compression, stab the motor in, and then set the intake and distributer before rotating the motor; install the intake and distributer and set timing on the engine stand and then stab the motor; or something I haven't thought of. It doesn't look like there is much room for error as far as setting the timing.
     
  2. DAREDEVIL

    DAREDEVIL Rockstar 4 Years 1000 Posts

    ignition timing, i would say yes..TDC and then there is a mark on the distributer...close to the #1 wire pickup..thats where the finger should point ..!
    IMO, atleast on the 350s its that way and i do believe on the 454 as well !
     
  3. McMaster

    McMaster New Member

    Thanks, DAREDEVIL.
     
  4. McMaster

    McMaster New Member

    Just my luck - I had it 180 out.
     
  5. ejohnson03

    ejohnson03 Epic Member 5+ Years 1000 Posts

    You may already know this, but make sure that the Timing connector to the PCM is disconnected before you advance and set the timing.
     
  6. McMaster

    McMaster New Member

    Let's say that I didn't know about disconnecting the timing to PCM connector - Which one is it?
     
  7. clgoch187

    clgoch187 Rockstar 4 Years 500 Posts

    single wire plug on the fire wall about /2 way to center from the drivers side
     
  8. McMaster

    McMaster New Member

    Thanks guys.
     
  9. DAREDEVIL

    DAREDEVIL Rockstar 4 Years 1000 Posts

    on a vortec u dont have to disconect it at all, u cant set the timing it will only work in 1 position.
     
    Last edited: Mar 31, 2011

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