PRICE SHOWN IS PER HEAD, NOT INCLUDING $300 CORE CHARGE, SHIPPING AND TAX. SOLD IN PAIRS.
FULLY ASSEMBLED. ALSO AVAILABLE BARE AND WITH OTHER VALVE & SPRING CHOICES.
These seasoned GM LS3 heads have finally been given a chance to breathe after a full treatment on our state-of-the-art CNC equipment. That includes porting and smoothing out of the combustion chamber on our 5-axis, a CNC valve job on our Newen Contour and getting milled to perfect flatness on our Berco.
The port work brings the intake runner volume from 260 to 290cc. The exhaust is increased from 80 to 95cc. The smoothing work in the combustion chamber leaves it with a 71cc volume. Click the BUY IT NOW link to take a close look at the spin video and photos showing unsurpassed quality of the machining work.
We assemble these heads using:
- Manley Severe Duty intake valves,
- Manley Extreme Duty Inconel exhaust valves,
- Manley NexTek valve spring kit and retainer kit
Unlike pure head porters, we build engines. While flow numbers are useful information, we really like to see how they do on our dyno. Better yet, we want to see how they do on the track. Furthermore, we intentionally sacrifice air flow to preserve the valve guide. Who needs a head that will eventually grenade an engine due to its missing half the valve guide?
And yes, we eat our own cooking. A set of these heads were on a GMC Canyon that our shop manager ran on Drag Week 2018. His naturally-aspirated, pump-gas LS3 produced 766 hp on our dyno (see video below).
Click the BUY IT NOW button to see more detailed information and video, or call us at 815-725-2727 to order a set for your car now.
NOTE:
CORE DEPOSIT WILL BE REFUNDED UPON RECEIPT OF A USEABLE SET OF REPLACEMENT LS3 HEADS FROM YOU.
BUILT BY PEOPLE WHO LOVE MOTORSPORTS FOR PEOPLE WHO LOVE MOTORSPORTS