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Technical timing on 331 supercharged

Discussion in 'The Hokey Ass Message Board' started by c/h, Apr 26, 2020.

  1. c/h
    Joined: Jul 29, 2008
    Posts: 426

    c/h
    Member
    from iowa

    Yes anybody ran a 671 on a 331 have a idea what the timing should be just about ready to get it started and curious what others had
    thank you
     

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  2. Oh man,,,,I almost didn’t open this thread,,,,,.very ,,very nice !
    Do you have any more pics,,,,and please post a video of the engine when she’s running !

    Tommy
     
    Hombre likes this.
  3. seb fontana
    Joined: Sep 1, 2005
    Posts: 6,512

    seb fontana
    Member
    from ct

    Dat's gonna be loud!!
     
    loudbang likes this.

  4. c/h
    Joined: Jul 29, 2008
    Posts: 426

    c/h
    Member
    from iowa

    its baffled.also its one of the hats garlits sells.just a carb on top .works well had one in 08 .ive turned the exhaust out so doesn't eat up the paint .well its trying times .Dot is closed till may 1 and then they still don't know when there going to get it inspected for a title .Then heartland nats good guys coming up over the 4th july not sure if that's going to happen .silver one from 08
    it could be worse.
     

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    Last edited: Apr 26, 2020
    loudbang and Hombre like this.
  5. 73RR
    Joined: Jan 29, 2007
    Posts: 6,368

    73RR
    Member

    Maximum 35 deg.
     
    loudbang and Desoto291Hemi like this.
  6. PotvinV8
    Joined: Mar 30, 2009
    Posts: 55

    PotvinV8
    Member

    I have a blown 331 and run 14 initial, 34 total.
     
  7. c/h
    Joined: Jul 29, 2008
    Posts: 426

    c/h
    Member
    from iowa

    ended up in the 12-13 intial 30s total thanks for the help.
     
  8. 32 max on 93 octane. If your running any boost lower the timing one degree for each pound of boost or else it will detonate. Believe me you don't want that. Broken pistons and smashed bearings are only the beginning.
     
  9. hemihotrod66
    Joined: May 5, 2019
    Posts: 212

    hemihotrod66
    Member

    Most early hemis like 30 to 32 degrees of total timing...Take it up to 2000 RPM and set the timing at 30 degrees Initial will probably fall around 10 or 12 degrees...Initial is no big deal just have all total timing in by 2000 RPM..
     

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