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Thread: LOCKED OUT TIMING

  1. #1
    Senior Member DYNO OPERATOR
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    Apr 2008
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    496

    LOCKED OUT TIMING

    (1)WILL I GAIN ANYTHING BUY LOCKING OUT MY DIST.
    (2)IS IT WORTH IT?
    (3)WHAT ELSE NEEDS TO BE DONE WHEN DOING THIS?

  2. #2
    Senior Member RACING JUNKIE curtisreed's Avatar
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    Feb 2004
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    KIEFER, OK.
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    1,309
    In my case I started without locking mine. 383, 11.3 compression on alcohol. When I did lock it out I found that it started easier and would build RPM faster, I.E. better throttle response. This is on a drag only motor. I didn't gain anything in e.t. because leaving either off of the foot brake or trans brake, in my case, I was already above the RPM to bring the advance all the way in. Coming up against the brake was better/quicker though.

    Curtis

    P.S. I changed nothing else but locking the distributor so I would know how it acted differently.

  3. #3
    Senior Member EXPERT BUILDER
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    Jan 2005
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    jeff if your talking about a bone stock motor then easy answer no.if it has mild cam and gently warmed over then prob not. if its a nasty cam with big heads and gonna see lots of rpm then yes. on my bbc with big roller cam its a turd with anything other than a locked out distributor. depends on your application and mostly cam selection

  4. #4
    Senior Member DYNO OPERATOR
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    Quote Originally Posted by russ67chevelle
    jeff if your talking about a bone stock motor then easy answer no.if it has mild cam and gently warmed over then prob not. if its a nasty cam with big heads and gonna see lots of rpm then yes. on my bbc with big roller cam its a turd with anything other than a locked out distributor. depends on your application and mostly cam selection
    I GUESS I WILL TRY IT. 688 LIFT CAM AFR210 FULLY PORTED HEADS.RACE ONLY.

  5. #5
    Senior Member RACING JUNKIE jmarksdragster's Avatar
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    Jul 2007
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    Florida
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    In your case absolutely. We found even with duration as small a 230@.050 on a tight LSA, 106 to 108, they responded to locked out timing. Unless you are running less total timing currently, start at about 36˚ and work up 1 at a time watching the plugs ground strap. The heat line should be mid way in the bend of the ground strap. Start with fresh plugs. Also stop and go back 1 if the ET or MPH falls off.
    Mark Whitener
    http://racingfuelsystems.myfunforum.org
    __________

    Good work isn't cheap, and cheap work can't be good.


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