Engine wont rev in the 1/4 mile

Discussion in 'Engine Topic' started by Domobomb, Sep 14, 2017.

  1. budro6968

    budro6968 Veteran Member

    1,960
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    Apr 2, 2016
    Jax Florida
    Are your throttle plates opening completely at full throttle.
     
  2. GoldenOne7710

    GoldenOne7710 Veteran Member Lifetime Gold Member

    4,317
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    Jun 23, 2004
    Athens, GA
    What size tire did you use out back this time? You probably would benefit with a little more converter, but I wouldn't overdo it if you drive mostly on the street. I like a happy medium that performs well on AND off the track.
     
  3. 71RS6SPD

    71RS6SPD Veteran Member

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    7
    Nov 14, 2016
    Are you now sure you are getting full power? I had a similar issue and it was timing. After testing I ended up adding 4 more degrees and it made a huge difference. Mine ran fine and never skipped but just felt like less power up top than there should be - at first I was questioning the cam as it seemed like a stock 4500 rpm unit. With the added 4 degrees it pulls up to 6k now and I do intend to add more timing when the weather breaks. I only have 1k miles on it so far. I have read a lot about this and many engines like more than the 36 recommended by the 'general rules'. I'm at 38 now and do intend to add more when I start driving it again. In my experience, lean fuel issues cause backfires/misfires and zero output issues. If it's running smooth but has low power at rpm, it's probably a lack of timing at WOT@rpm. Your plugs could also show a lean issue. I have spoken to many that run 40-44 degrees without vac.
     
  4. tom3

    tom3 Veteran Member

    10,907
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    Aug 1, 1999
    ohio
    Sure made some improvement with the changes!
     
  5. 1980RS

    1980RS Veteran Member

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    Jun 17, 2006
    MN
    Put a good converter in that car and you are in the 12's easy. That Camaro was pretty soft out of the hole.
     
  6. 79RedZ

    79RedZ Veteran Member

    616
    22
    Mar 24, 2009
    Hamilton,MI
    Definitely agree with muscle car on this. It was soft coming off the line.
     
    muscl car likes this.

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