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  <!-- Main pages -->
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  <url><loc>https://engine-build.com/contact</loc><changefreq>monthly</changefreq><priority>0.5</priority></url>
  <url><loc>https://engine-build.com/privacy</loc><changefreq>yearly</changefreq><priority>0.3</priority></url>
  <url><loc>https://engine-build.com/terms</loc><changefreq>yearly</changefreq><priority>0.3</priority></url>

  <!-- Reference -->
  <url><loc>https://engine-build.com/engine-data</loc><changefreq>weekly</changefreq><priority>0.9</priority></url>
  <url><loc>https://engine-build.com/cam-guide</loc><changefreq>monthly</changefreq><priority>0.9</priority></url>
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  <url><loc>https://engine-build.com/build-sheets</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>

  <!-- Calculator categories -->
  <url><loc>https://engine-build.com/calculators</loc><changefreq>weekly</changefreq><priority>0.9</priority></url>
  <url><loc>https://engine-build.com/calculators/short-block</loc><changefreq>weekly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/cam-valvetrain</loc><changefreq>weekly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/power-fuel</loc><changefreq>weekly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/drivetrain-shop</loc><changefreq>weekly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/diesel</loc><changefreq>weekly</changefreq><priority>0.8</priority></url>

  <!-- Short Block calculators -->
  <url><loc>https://engine-build.com/calculators/displacement</loc><changefreq>monthly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/compression-ratio</loc><changefreq>monthly</changefreq><priority>0.9</priority></url>
  <url><loc>https://engine-build.com/calculators/ring-gap</loc><changefreq>monthly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/piston-speed</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/quench-deck-height</loc><changefreq>monthly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/rod-ratio</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/bearing-clearance</loc><changefreq>monthly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/intake-manifold-milling</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/bolt-spec-lookup</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>

  <!-- Cam & Valvetrain calculators -->
  <url><loc>https://engine-build.com/calculators/cam-duration</loc><changefreq>monthly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/cam-degreeing</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/valvetrain-builder</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/valve-spring</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/valve-shim</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/pushrod-length</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/piston-to-valve</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/head-flow</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/head-milling</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>

  <!-- Power, Fuel & Forced Induction calculators -->
  <url><loc>https://engine-build.com/calculators/hp-torque</loc><changefreq>monthly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/hp-estimator</loc><changefreq>monthly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/afr-lambda</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/carb-cfm-sizing</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/fuel-injector-sizing</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/turbo-finder</loc><changefreq>monthly</changefreq><priority>0.8</priority></url>
  <url><loc>https://engine-build.com/calculators/boost-compression</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/octane-mix</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/header-sizing</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/ignition-timing-curve</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>

  <!-- Drivetrain & Shop calculators -->
  <url><loc>https://engine-build.com/calculators/gear-ratio</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/torque-extension</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/mm-inch-converter</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/density-altitude</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/torque-converter-stall</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>

  <!-- Diesel calculators -->
  <url><loc>https://engine-build.com/calculators/diesel-single-turbo</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/diesel-compound-turbo</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/diesel-lift-pump</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/diesel-egt-drive-pressure</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/diesel-injector-nozzle-pop-pressure</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/diesel-smoke-lambda</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
  <url><loc>https://engine-build.com/calculators/diesel-valve-relief</loc><changefreq>monthly</changefreq><priority>0.7</priority></url>
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