LS3 Heads

For enthusiasts aiming to elevate their LS-powered vehicles, upgrading to LS3 heads is a transformative step. Renowned for their superior airflow and combustion efficiency, these heads are pivotal in extracting maximum performance from your engine. 

Whether you're building a street machine or a track dominator, LS3 CNC heads offer the precision and reliability needed to achieve your goals.

What Are LS3 Heads?

LS3 heads are aluminium cylinder heads designed for GM's LS3 engines that feature rectangular intake ports and high-flow capabilities. Their design promotes better airflow, resulting in increased horsepower and torque. When enhanced through CNC porting, these heads become LS3 ported heads, offering even greater performance benefits.

Benefits of CNC Ported LS3 Heads

Upgrading to CNC ported LS3 heads provides several advantages:

  • Enhanced Airflow: Precision CNC machining optimises intake and exhaust ports for maximum flow.
  • Increased Horsepower: Improved airflow leads to significant gains in horsepower and torque.
  • Consistency: CNC porting ensures uniformity across all ports, leading to balanced engine performance.
  • Compatibility: Designed to work seamlessly with other performance upgrades, including camshafts and exhaust systems.

Precision and Power with CNC Ported LS3 Heads

CNC ported LS3 heads are engineered for those who demand absolute precision and performance. Unlike factory heads, these undergo computer-controlled porting to fine-tune airflow and combustion efficiency. This results in superior throttle response, smoother power delivery, and increased horsepower across the rev range. 

For serious builders and tuners, this upgrade is more than a boost — it's a commitment to performance excellence. At Australia Speed, we stock only the most refined LS3 CNC heads designed to push your build further.

Why Choose Australia Speed?

Australia Speed stands out as a premier supplier of performance engine parts in Australia. Here's why:

  • Expertise: With years of experience, our team understands the intricacies of LS engines and performance upgrades.
  • Quality Products: We stock only the best, ensuring our customers receive reliable and high-performing parts.
  • Customer Support: Our knowledgeable staff is always ready to assist with product selection and technical advice.
  • Fast Shipping: Based in Melbourne, we offer prompt delivery across Australia.

Trusted Performance Backed by Australia Speed

Australia Speed is the trusted choice for performance enthusiasts nationwide. We’re proud to deliver parts that meet the demands of high-horsepower builds. 

When you shop with Australia Speed, you're not just buying parts — you're gaining access to years of technical experience and customer-first support. Upgrade with confidence. Upgrade with Australia Speed.

LS3 Heads’ Complementary Upgrades

To maximise the benefits of your LS3 ported heads, consider pairing them with other high-performance components:

  • LS2 Heads: Ideal for those looking to upgrade from earlier LS engines.
  • LS1 Heads: A great option for enhancing older LS1 engines.
  • LS7 Lifters: Essential for maintaining valve train stability at higher RPMs.

Upgrade Your Build with LS3 Heads by Australia Speed

Ready to unlock the full performance potential of your LS engine? Australia Speed offers premium LS3 CNC heads, LS3 ported heads, and complete CNC-ported solutions tailored for serious power gains. 

Whether you're chasing track times, dyno results, or just want your street car to deliver that extra grunt, our range of LS3 heads delivers unmatched quality and performance. With fast shipping from our Melbourne warehouse and a team of passionate experts on hand to help, there's no better time to upgrade. 

Shop now and experience why Australian car enthusiasts trust us for high-quality performance parts that deliver real results, every time.

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