{"product_id":"complete-small-block-chrysler-318-360-179cc-aluminium-cyl-heads-pair","title":"Complete Small Block Chrysler 318-360 179cc Aluminium Cyl Heads Pair","description":"\u003cdiv\u003e\n\u003cp\u003eUpgrade your street or strip Chrysler 318-360 with Aeroflow’s Elite 179cc aluminium cylinder heads. This Complete Small Block Chrysler 318-360 179cc Aluminium Cyl Heads Pair is engineered to deliver strong airflow and reliable performance without breaking the bank, built from robust A356-T6 aluminium for durability in real-world driving.\u003c\/p\u003e \u003cp\u003eDesigned to maximize airflow where it matters most—idle to 6500 rpm—these heads feature a refined chamber and runner layout, a 5-angle valve job, and professional assembly to help you squeeze every bit of performance from your engine. The result is improved cylinder filling, better air velocity, and responsive throttle that you can feel on both the street and at the drag strip.\u003c\/p\u003e \u003ch3\u003ePerformance-Driven features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eChamber: 63cc\u003c\/li\u003e \u003cli\u003eIntake port volume: 179cc; Intake port dimensions: 2.28\" x 1.16\"\u003c\/li\u003e \u003cli\u003eExhaust port volume: 79cc; Exhaust port dimensions: 1.75\" x 1.257\"\u003c\/li\u003e \u003cli\u003eSpark plug location: Angled\u003c\/li\u003e \u003cli\u003eRocker stud thread size: OE stock\u003c\/li\u003e \u003cli\u003eValve guides: Manganese Bronze; guide O.D.:.530\" (0.560\" at base)\u003c\/li\u003e \u003cli\u003eValve stems: 11\/32\"\u003c\/li\u003e \u003cli\u003eDeck thickness:.625\"\u003c\/li\u003e \u003cli\u003eIntake valve diameter: 2.02\"; Exhaust valve diameter: 1.60\"\u003c\/li\u003e \u003cli\u003eValve spring pocket I.D.: 1.50\"\u003c\/li\u003e \u003cli\u003eValve spring features: 1.55\" diameter dual springs for up to 0.580\" max lift\u003c\/li\u003e \u003cli\u003eValve spring and retainer details: Installed height 1.800\"; installed pressure 125 psi; open pressure 340 psi @ 500\"; max lift 0.600\" @ 1.260\"; coil bind 1.120\"\u003c\/li\u003e \u003cli\u003eSpring outside diameter: 1.450\"; spring inside diameter: 1.050\"; Spring free length: 2.200\"\u003c\/li\u003e \u003cli\u003eValve spring retainer outside diameter: 1.400\"; inside diameter: 0.400\"\u003c\/li\u003e \u003cli\u003eValve spring retainer step 1: 1.050\"; step 2: 0.685\"\u003c\/li\u003e \u003cli\u003eValve spring locator outside diameter: 1.500\"\u003c\/li\u003e \u003cli\u003eSuitable for flat tappet and hydraulic camshafts\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat you get and why it matters\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMade from durable A356 aluminium with a focus on durability and consistent performance under real-world conditions\u003c\/li\u003e \u003cli\u003eReady-to-perform design with a robust 63cc chamber and carefully tuned port volumes to improve air velocity and cylinder filling across the RPM range\u003c\/li\u003e \u003cli\u003eHand-finishing touches like diamond-honed bronze guides and hand bowl blending, combined with a 5-angle valve job for improved flow\u003c\/li\u003e \u003cli\u003eProfessional assembly ensures reliability from idle through mid-range horsepower\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eImportant installation note\u003c\/h3\u003e\n\u003cp\u003eImportant — check installed seat pressure and open pressure before installing to ensure correct spring pressure for your specific application. This helps you avoid valvetrain issues and ensures reliable performance from day one.\u003c\/p\u003e \u003ch3\u003eFitment and use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDesigned for 318-360 small-block Chrysler engines\u003c\/li\u003e \u003cli\u003eIdeal for hot street builds and drag-strip applications where you need improved airflow without sacrificing drivability\u003c\/li\u003e \u003cli\u003eBalances street manners with race-ready potential thanks to the 179cc intake and carefully engineered port and chamber design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"TGM Performance Parts","offers":[{"title":"Default Title","offer_id":47478028599466,"sku":"AF95-2318","price":2774.3,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7829\/4698\/files\/AF95-2318.jpg?v=1759286484","url":"https:\/\/tgmperformance.com.au\/products\/complete-small-block-chrysler-318-360-179cc-aluminium-cyl-heads-pair","provider":"TGM Performance Parts","version":"1.0","type":"link"}