6BTM or locked out timing?

Discussion in 'Forced Induction Mopar' started by Ccrussell, Nov 28, 2018.

  1. Ccrussell

    Ccrussell FABO Gold Member FABO Gold Member

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    Hello,
    I am still collecting parts for my 225 turbo build.
    Now i am at a point of wanting to select my ignition control.
    I currently run a stock distributor (1972)with pertronix module.
    Will a 6BTSM work with the stock distributor? I have an available dizzy from a later slant, 1978 i believe or can i just lock out the distributor to 18 degrees? How is the distributor locked out, i havent seen a procedure as to how to do this but am still searching. Car will be street driven always with some highway use.
    Money is of concern, but i will spend it where it makes good sense. Thanks

    7844AB04-5B75-4251-90C4-4D0C32FDA7D8.jpeg
     
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    • Rolling_Thunder

      Rolling_Thunder Rolling Thunder

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      I'm not too familiar with your plans - but do you have a management system picked out yet? Going EFI or keeping carb? Most EFI systems utilize spark control and at that point a locked out dizzy allows the ECM to do all timing adjustments.
       
    • Ccrussell

      Ccrussell FABO Gold Member FABO Gold Member

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      Hello Rolling_Thunder,
      I should have mentioned it, i am using a Holley 500cfm two barrel blow thru with hanger 18 mods.
      Intercooler, boost reference fuel pump with return line .
      O2 sensor.
       
    • subcom

      subcom Well-Known Member

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      I'm not very familiar with the guts of the S6 distributors but I have to imagine that they are similar to their v8 cousins in that they have springs and weights that control the timing curve advance and those are the components that must be "locked" in order to fix your timing at a particular setting. That would be the cheapest route. Locked distributor at 18 degrees and just sacrifice some streetability. Also, you could look for a "lean burn" slant distributor. Those don't have weights or springs and are essentially "locked" from the factory. How built is your Slant? Is it a forged assembly stock?
      Best of luck with the project!
       
    • halifaxhops

      halifaxhops It's going to get stupid around here! FABO Gold Member

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      Actually pretty easy, weld the cam stop to the top of the weights and what I do to get rid of the vac is take it off and then drill a hole through the base plate and tap it 10/32 and install a screw.
       
    • Ccrussell

      Ccrussell FABO Gold Member FABO Gold Member

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      Ok then, set just 18• base timing with a timing light, after those small mods? Is it that easy? I should look at my later distributor, it may be suitable without modification.
      The motor itself is completely stock. About 130k miles on it, runs nice, uses no oil.
      Thanks for tips