Speedmaster Chevy BBC 454 Shaft Mount 1.7 Ratio DNA Stainless Steel Roller Rocker Arms 1-261-032

The Speedmaster Chevy BBC 454 Shaft Mount Roller Rocker Arms deliver high-performance valve train enhancement for big-block Chevrolet 454 engines. Engineered with a 1.7 ratio and constructed from durable stainless steel, these DNA® roller rocker arms provide improved valve lift geometry and reduced friction compared to stock components. The shaft mount design ensures secure, stable installation on your BBC 454 engine block.

These roller rocker arms are ideal for builders and enthusiasts looking to maximize engine performance and reliability. The stainless steel construction resists corrosion and extends component life, while the roller design minimizes wear on pushrods and rocker studs. Compatible with Chevy BBC 454 applications, these arms support increased valve lift and aggressive valve timing tuning, making them a popular choice for street and competition builds seeking improved combustion efficiency and power output.

Key Features & Benefits

• 1.7 Ratio Design: Optimized lever ratio increases valve lift geometry for enhanced engine performance.
• Stainless Steel Construction: Corrosion-resistant material ensures durability and longevity in demanding engine environments.
• Roller Design: Reduces friction and wear on pushrods and rocker studs during operation.
• Shaft Mount Configuration: Secure mounting system provides stable, reliable installation on BBC 454 block.
• DNA® Technology: Premium rocker arm engineering delivers consistent, high-performance valve actuation.

Specifications

Ideal Applications

• Street performance engine builds requiring improved valve train efficiency
• Competition and racing applications demanding high-lift valve actuation
• Engine rebuilds and restorations for BBC 454 classic muscle cars
• High-performance tuning and aftermarket engine modifications