π₯π LIVE CHAT: The History & Evolution of the 23Β° Chevy Cylinder Head with Chad Speier! ππ₯
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Date: Saturday, June 27, 2026
π Time: 7:00 PM EST
π Channel: DragBoss Garage
Join DragBoss Tim Halstead and special guest Chad Speier of Speier Racing Heads for an incredible deep dive into one of the most successful cylinder head designs in racing historyβthe legendary 23Β° Chevy cylinder head! ππ₯
From its humble beginnings as a production small-block Chevrolet head to today's 900+ HP low-port monsters, we'll explore the complete evolution of the 23-degree platform and why it remains one of the most dominant cylinder head designs in drag racing, circle track, and high-performance engine building.
Topics Include:
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The origins of the 23Β° Chevy cylinder head
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Production castings vs. modern race heads
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Port design evolution and airflow development πͺοΈ
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Why low-port heads can make 900+ HP πͺ
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Combustion chamber and valve angle changes π₯
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Flow bench development and port velocity π
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Welding, epoxy, and custom port modifications π οΈ
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What separates winning cylinder heads from average ones π
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Then vs. Now: How technology changed the game
Chad Speier is one of the most respected cylinder head developers in the industry and the founder of Speier Racing Heads, home of the famous 900 HP Low-Port 23Β° Cylinder Heads. This is your opportunity to hear decades of hard-earned knowledge, racing history, and cylinder head development directly from one of the best in the business.
Whether you're into:
π Drag Racing
π Circle Track Racing
π Small Block Chevy Engines
π Cylinder Head Porting
π Airflow Development
π Engine Building
π Pro Stock Technology
π Race Engine Design
β¦this is a live chat you do NOT want to miss!
Bring your questions and join us LIVE!
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