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  1. No baffles cuase this? - Hot Rod Forum

    Nov 14, 2004 · I've been fighting this "m/t valve cover baffle" thing for quite a while now. For those who don't know, the hole location …

  2. Technical - SBC engine breathers | The H.A.M.B.

    Feb 6, 2024 · Typical stock V-8 runs a pcv on one valve cover, and a hose from opposite side cover to air cleaner with a vent or draw …

  3. SBC with no PCV - Hot Rod Forum

    May 25, 2006 · It also shows a breather hose coming from the valve cover to the air cleaner. In your situation you would run the hose …

  4. Technical - SBC Breather questions | The H.A.M.B.

    Jul 19, 2016 · The biggest mistake people make when doing valve cover mounted breather add-ons is failing to baffle direct oil spray …

  5. SBC Valve Cover Breather Upgrade Guide For Optimal Performance

    Aug 11, 2024 · Learn how to install, troubleshoot, and customize your SBC valve cover breather for improved airflow and engine …

  6. No valve cover breathers? - Don Terrill’s Speed-Talk

    May 7, 2019 · Then in the feature he was being blinded by oil leaking from the right side valve cover gasket. While searching for the …

  7. LET IT BREATHE - In The Garage Media

    Feb 4, 2021 · Drill a 1.250-inch hole into a cast valve cover and you will discover that nearly all common breather and PCV valve …

  8. Some engines require PCV, oil fill or breather holes in the valve covers and some do not. So PML designed these small block Chevy …

  9. To Breath Or Not to Breath.. Valve Covers - Team Chevelle

    Mar 8, 2007 · The ones without holes are for vacuum pump setups, since every setup is different, they feel you can put the holes in …

  10. Oil Breathers on SBC 350 - Chevy Tri Five Forum

    Nov 11, 2006 · Run a pcv valve in the pass side hooked up properly to full time vacuum port, and run a breather on the driver's side. …

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