Complete Small Block Chrysler 318-360 179cc Aluminium Cyl Heads Pair

Upgrade 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.

Designed 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.

Performance-Driven features

• Chamber: 63cc
• Intake port volume: 179cc; Intake port dimensions: 2.28" x 1.16"
• Exhaust port volume: 79cc; Exhaust port dimensions: 1.75" x 1.257"
• Spark plug location: Angled
• Rocker stud thread size: OE stock
• Valve guides: Manganese Bronze; guide O.D.:.530" (0.560" at base)
• Valve stems: 11/32"
• Deck thickness:.625"
• Intake valve diameter: 2.02"; Exhaust valve diameter: 1.60"
• Valve spring pocket I.D.: 1.50"
• Valve spring features: 1.55" diameter dual springs for up to 0.580" max lift
• Valve 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"
• Spring outside diameter: 1.450"; spring inside diameter: 1.050"; Spring free length: 2.200"
• Valve spring retainer outside diameter: 1.400"; inside diameter: 0.400"
• Valve spring retainer step 1: 1.050"; step 2: 0.685"
• Valve spring locator outside diameter: 1.500"
• Suitable for flat tappet and hydraulic camshafts

What you get and why it matters

• Made from durable A356 aluminium with a focus on durability and consistent performance under real-world conditions
• Ready-to-perform design with a robust 63cc chamber and carefully tuned port volumes to improve air velocity and cylinder filling across the RPM range
• Hand-finishing touches like diamond-honed bronze guides and hand bowl blending, combined with a 5-angle valve job for improved flow
• Professional assembly ensures reliability from idle through mid-range horsepower

Important installation note

Important — 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.

Fitment and use cases

• Designed for 318-360 small-block Chrysler engines
• Ideal for hot street builds and drag-strip applications where you need improved airflow without sacrificing drivability
• Balances street manners with race-ready potential thanks to the 179cc intake and carefully engineered port and chamber design