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Thread: HFv6 info

  1. #1
    Tuner in Training
    Join Date
    Jun 2012
    Location
    Rochester
    Posts
    29

    HFv6 info

    I've been trying to find any info on how to properly tune the 3.6 HFV6 VVT cams properly but can't seem to find anything. My setup is using the E77 ECM which is Bosch
    1970 Monte Carlo L96/4l80 swap
    2008 Pontiac Torrent GXP 3.6vvt/6l70

  2. #2
    Tuner driftnpow's Avatar
    Join Date
    Feb 2008
    Location
    South West WA
    Posts
    149
    Small changes, over different driving conditions and environments.
    To help chart your changes in the scanner the PIDs I would have on side are;
    Air Load (MAP), MAF, Cam angle gauges - Intake bank 1&2, Exhaust bank 1&2, Engine Load and the Base essentials RPM, Speed etc...….

    Each time you 'key-on" the engine will go thru CAT warmup schedule for about 5 minutes or so - so variable cam timing is parked, that you can chart thru the scanner and relevant PIDs
    The biggest piece of information that I recommend is getting hold of workshop manual of your engine, one that details the valvetrain, what it looks like, how its set, the actuator functions limitations and technical specs.
    Keep in mind any changes you make in cam timing, will effect other aspects of your tune.
    Beached as bro!