Race-winning ports,
cut to the tenth.
Performance CNC reverse-engineers and machines cylinder head ports and chambers for engine builders and race teams worldwide. Confidential, repeatable, and held to tolerances you can run all season.
- 55+
- Years combined experience
- 3rd & 4th
- Generation machinists
- NDA
- Private-label program
What We Machine
Built for the
people who build engines.
We are a machine shop, not a marketing shop. The work below is what we do every day for performance shops and race programs that cannot afford a part that is close enough.
- 01
5-Axis CNC Porting
Intake and exhaust ports machined on 5-axis centers for shape that hand work cannot repeat. Every head in a set comes off the machine identical, port to port and pair to pair.
- 02
Reverse Engineering
We digitize a proven port and chamber, rebuild the geometry as a clean machine model, and reproduce it exactly. Your development work stops walking out the door with the porter.
- 03
Master-Model Machining
Precise machining of master-model detail so a winning design becomes a fixed, documented standard you can order again next season without guesswork.
- 04
Private-Label Program
The vast majority of our work is proprietary machining done under your name. Your customers see your brand. The design and the data stay yours, under NDA.
Why Teams Trust The Numbers
Repeatability you can
build a season on.
Hand porting drifts from port to port. Our 5-axis process locks the winning shape into a machine model and reproduces it within tight tolerance, every part, every order.
Target port repeatability
Documented, re-orderable designs
Built On Confidentiality
The work nobody
ever sees us do.
In racing, an advantage only lasts while it stays secret. That is exactly why most of what leaves this shop carries someone else's name. Confidentiality is not a policy we bolt on. It is the product.
Your design stays yours
We sign NDAs and protect trade secrets as a matter of course. The geometry we machine for you is not resold, repurposed, or shown to anyone else.
Private-label by default
Roughly 95% of our work ships under our customers' names. Your shop gets the credit and the relationship. We stay invisible on purpose.
Exclusive, not off-the-shelf
Custom port and chamber designs developed for one program stay exclusive to that program. No catalog, no overlap with your competition.
The Bench Behind The Machines
Three and four
generations deep.
Performance CNC is family owned and operated by third and fourth generation machinists. The people running the programs grew up around this equipment. That is why a head you order today and a head you order two years from now come out the same.
- 55+
- Years combined experience
- 3rd & 4th
- Generation machinists
- Worldwide
- Teams served
Who We Serve
Built for the shops that win on the dyno and on the track.
- 01Engine builders
- 02Race teams
- 03Performance shops
- 04Cylinder head specialists
Start A Porting Project
Tell us what
you are building.
Send the head, the application, and the target. We will scope the porting work and walk you through the private-label process under NDA. Typical CNC turnaround runs about four weeks, up to eight for turnkey pairs.
The Ones You Can Trust
Summerville, South Carolina