Air Flow Research has been defining technological leadership in cylinder head manufacturing and flow dynamics. This complete commitment to performance has enabled Air Flow Research's cylinder heads to find themselves on the fastest race cars and the most powerful street machines in the country. As every engine builder will attest to, the secret to increasing horsepower and performance lies in the cylinder head. Air Flow Research's cylinder heads outflow and out horsepower everything in their league.
Founded in 1970 by Ken Sperling, Air Flow Research pioneered the process of CNC porting cylinders heads which is now common practice in today's automotive industry. Over the last 45 years we have been defining technological leadership and flow dynamics in the pursuit of increased performance. This commitment has enabled Air Flow Research to find themselves on the fastest race cars and the most powerful street machines in the country.
Utilizing modern manufacturing techniques and the latest in machinery, such as a Browne & Sharpe Coordinate Measuring Machine, fifteen Haas’ 5-AXIS CNC machines, two Mazaks, four Newen Epoc valve machines, Two Mori Seiki 42 pallet systems, and three VF4 Haas machines. AFR stays true to this commitment by manufacturing each piece in our Valencia, California facility just 30 minutes north of Los Angeles.
Air Flow Research cylinder heads became a key consultant to General Motors, designing cast iron and aluminum heads for the still-popular phase 3, 4, 5, and 6 Bowtie Small Block Chevy. AFR designed the big block D port aluminum pro-stock racing head, at that time the state-of-the-art.
AFR had also branched out into NASCAR, porting cylinder heads for top drivers like Darrel Waltrip, Cale Yarbrough, Richard Childress, Junior Johnson, Richard Petty, AJ Foyt, Harry Gant, and Neil Bonnet, to name a few. Air Flow Research’s pioneering use of wet-flow technology was allowing AFR cylinder heads to obtain unequaled flow and power.
Air Flow Research continued their development of class leading cylinder heads in the new millennium by further adapting to CNC technology. In addition, with the implementation of Lean practices and the move to a new 30,000 sq. ft. facility in 2006, AFR was able to expand its product lines to fit a wide range of Small Block Chevy, Big Block Chevy, Small Block Ford and more.
In 2004 AFR was the first to introduce a carb legal aftermarket cylinder head for the popular Gen 3 LS1. Later in the decade AFR revamped their SBC line and released the class leading Eliminator Cylinder Heads. AFR's dedication to continuous improvement has poised us to be a leader for years to come.
Throughout the years Air Flow Research has continually strived to incorporate best-in-class processes, methodologies and technology in pursuit of increased performance. Whether that was pioneering Wet-Flow testing and CNC porting of cylinder heads in the seventies, to full 5-AXIS CNC Porting in the eighties or adopting LEAN and AGILE methodologies to increase our overall efficiency.
This allows us to provide an affordable product, to the racer and enthusiast, with total flow consistency from one cylinder head to the next.
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