Calhoun Performance

Calhoun Performance A "Clear-Headed" Approach to Cylinder Head Development

We maximize engine combustion efficiency with a clear-headed approach to cylinder head development and performance for the drag and circle track racers, or any racer!

09/18/2026

LS3 Liberty.

09/18/2026

LS3.

At Calhoun Performance, we’re here for the racers, to improve air flow and increase horsepower. We do the following: 1) ...
07/09/2026

At Calhoun Performance, we’re here for the racers, to improve air flow and increase horsepower. We do the following:

1) Primarily port cylinder heads for shops and individual racers with our 5-axis CNC. Sometimes we grind by hand. If you’re a shop and need some consistent portwork, we’re often able to do a quick turnaround.

2) We create programs for unique applications when needed.

3) Flow test cylinder heads on our flow bench.

4) Some engine builds. Very few, depending on the project.

Feel free to call us to discuss your project or visit our website for more details.

Ph: (225) 485-7076
Web: www.calhounperformance.com

06/29/2026

It’s the conversations that drive the heart of our research. Engineering and artistry.

We are the cylinder head porting shop for the drag and circle track racers, or any racer! Using our 5-axis CNC, we help maximize horsepower.

Call us: (225) 485-7076
Check out our website: www.calhounperformance.com



Grabbing some coyote heads from a customer.If you need us to meet you for a pick up or drop off and you’re in the area, ...
06/27/2026

Grabbing some coyote heads from a customer.

If you need us to meet you for a pick up or drop off and you’re in the area, let us know so we can arrange it.

We are the cylinder head porting shop for the drag and circle track racers, or any racer! Using our 5-axis CNC, we help maximize horsepower.

Ph: (225) 485-7076
Web: www.calhounperformance.com


Comparing cylinder heads with Mark for research. R&D takes time, being aware of details, minor differences—on top of com...
06/27/2026

Comparing cylinder heads with Mark for research. R&D takes time, being aware of details, minor differences—on top of comparing 3D images in our CAD. Goal: can we get a cheap import casting to perform like a high end casting?

We are the cylinder head porting shop for the drag and circle track racers, or any racer! Using our 5-axis CNC, we help maximize horsepower.

Ph: (225) 485-7076
Web: www.calhounperformance.com


06/26/2026

Experimenting on this head: LS3 style casting by Liberty machined on our 5-axis. Intake runner volume cut to 271cc’s. Chamber programming will take place next.

We are the cylinder head porting shop for the drag and circle track racers, or any racer! Using our 5-axis CNC, we help maximize horsepower.

Ph: (225) 485-7076
Web: www.calhounperformance.com



Assembly.We are the cylinder head porting shop for the drag and circle track racers, or any racer! Using our 5-axis CNC,...
06/25/2026

Assembly.

We are the cylinder head porting shop for the drag and circle track racers, or any racer! Using our 5-axis CNC, we help maximize horsepower.

Ph: (225) 485-7076
Web: www.calhounperformance.com



06/23/2026

A throwback to Mr. Alvin hand porting at his table in the shop.

06/23/2026

LS3 intake that we ported by hand. Port matched to the heads we machined.

Ph: (225) 485-7076
Web: www.calhounperformance.com


Address

3564 Eaton Street
Baton Rouge, LA
70805

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+12254857076

Website

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