pcv/brake vac port

Discussion in 'Fuel and Air Systems' started by rigger3006, Jun 29, 2018.

  1. rigger3006

    rigger3006 Well-Known Member

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    just swapped 750 qf slayer for holley 750, according to instructions the qf rear port was pcv, the holley says rear vac port is for brake vac.would it be ok to run pcv off the rear brake vac port on the holley?, mostly for the ease of not rerouting everything
     
  2. brian6pac

    brian6pac Well-Known Member

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    The brake booster should go to the intake manifold and the PCV valve to the back of the carb.
     
  3. rigger3006

    rigger3006 Well-Known Member

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    just making sure , holley says its for the brakes, non issue as i have manual brakes
     
  4. oldkimmer

    oldkimmer Well-Known Member

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    Then u don’t have a problem then. Kim
     
  5. rigger3006

    rigger3006 Well-Known Member

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    probably not eh, was just wondering about the vac passageways in the carb base,the front(pcv) seems to meant for primaries whilst the brake booster at back is routed to secondaries.overthinking it im sure!