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Ships within 48 hours · Estimated delivery Sep 17 - Sep 22
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Description
CNC Ported | GM LS3 Port Cylinder Heads | 12675871-CNCWhen 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 &
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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Always soft
Size: Medium, Color: Black/Black/Black
Good fit, fast shipping. Love a new sock
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
Size
Size: Medium, Color: Black/Black/Black
Fit true to size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
★★★★★ 5
Awesome socks
Excellent socks. Very thick and comfortable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 30, 2026
★★★★★ 5
Nice socks.
Comfortable socks: who could ask for anything more? They seem to be of a nice quality, but I buy socks often so there's a rotation going on. A little pricey, but ankle socks always have that sporty look. Fit well, but kind of thin, which isn't a deal breaker.
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Reviewed in the United States on March 2, 2025
★★★★★ 5
Best socks on the market
Number of Items: 6, Color: Black/Graphite (6-pairs), Size: Medium
I highly recommend purchasing multiple orders of these socks. I used to wear puma socks that had the padding around the arch and were extremely thick (being that my feet are always cold) i wanted something thick again especially during the winter time. I have had these socks for over two months and I can truly say that they were a better purchase than my pumas. They are so thick that wearing even one pair will still fit into my tennis shoes or running shoes but my toes NEVER get cold. I put a lot of wear and tear on them and they have never started tearing on the bottoms like most socks do. Socks usually develop holes or tears from the friction but I wore the same pair over and over again while walking 13+ miles a day and I cannot tell any sign that these are going out on the bottom. I highly recommend purchasing multiple pairs of these socks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 6, 2023
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