CNC Ported | GM LS3 Port Cylinder Heads | 12675871-CNC

When it comes to LS Performance, Who knows the industry better than GM Performance.
We have now paired he most tried and tested production cylinder head on the market with the race winning experience of our industry leading CNC Cylinder Head machining team.
It's no secret that CNC Porting the GM LS3 Cylinder Head is the best way to maximize efficiency & flow from your cylinder head. By combining our CNC Ported LS3 heads with the right camshaft & engine engine combination you have a recipe for success.

What Is Included with Our CNC LS3 Heads?
- Genuine GM LS3 Cylinder Head Castings;
- 2.165" Hollow Stem Intake Valves;
- 1.590" Stainless Steel Exhaust Valves;
- CNC Ported Intake Runners;
- CNC Ported Exhaust Ports;
- CNC Machined Deck Surfaces;

Want Our CNC LS3 Heads with a Dual Spring Kit?
- PAC 1905 .660" Dual Valve Springs;
- Chromoly Retainers;
- PAC Valve Locks;
- Valve Stem Seals;
- Locators;

Want To Do A Changeover On Your Existing Heads?
Sure, we now offer a changeover program where you can send back your original heads & receive a cash back on them upon receiving them.
NOTE: We do not accept aftermarket, damaged or cracked castings.

Prefer To Chat With Us About Your Cylinder Head Upgrade?
Sure! Give us a call on
(03)8595 4343
OR Simply click
Get In Touch
& schedule a time that best suits you. We will have one of our sales consultants contact you at your convenience.
Alternatively, We are available for Live Chat right now!

Buy NOW!
Shop with confidence with free freight Australia wide & discounted pricing.