- Smaller-Than-Stock 11/32 in. Valve Stems Promote Excellent Flow
The Edelbrock #60547 Performer RPM Bare NHRA Stock/Super Stock Rectangle Port cylinder head is engineered specifically for Big-Block Chevy applications, delivering exceptional throttle response and power output across a wide RPM range from 1500 to 6500 rpm. Crafted from high-quality cast iron and heat-treated at the Edelbrock Foundry, this cylinder head exemplifies durability and performance. All manufacturing processes are completed in the USA, utilizing advanced computer technology and precision machining by Edelbrock’s expert engineers to ensure optimal fit and function. The head features highly efficient ports and innovative combustion chamber designs that enhance airflow and combustion efficiency, resulting in improved performance throughout the entire RPM spectrum. Top-tier features include threaded inserts in rocker stud and exhaust bolt holes for increased strength and longevity, along with manganese-bronze valve guides and ductile iron valve seats that contribute to reliable operation under demanding conditions. Designed for Chevrolet Big-Block Mark IV engines including 396, 402, 427, 454, and 502 cubic inch displacements, this cylinder head is a high-performance upgrade suitable for NHRA Stock and Super Stock racing classes. The smaller-than-stock 11/32 inch valve stems promote excellent airflow, further enhancing horsepower and throttle response for serious racers and enthusiasts alike. With its robust construction and advanced design, the Edelbrock Performer RPM #60547 cylinder head provides a significant performance advantage for Big-Block Chevy engines, making it an ideal choice for those seeking reliable, high-performance cylinder heads for competitive racing or high-performance street applications.
Features:
- Designed for Big-Block Chevy applications including 396, 402, 427, 454, and 502 cubic inch engines
- Delivers power and throttle response from 1500 to 6500 rpm
- Constructed from cast iron and heat-treated at Edelbrock Foundry for durability
- Advanced port design and combustion chambers improve airflow and efficiency
- Threaded inserts in rocker stud and exhaust bolt holes for added strength
- Manganese-bronze valve guides with ductile iron valve seats enhance longevity
- Smaller-than-stock 11/32 inch valve stems promote excellent airflow and performance
- Manufactured in the USA with precision machining and engineering
- air_freight_prohibited:
- false
- not_carb_approved:
- true
- carb_acknowledgement_required:
- true
- ltl_freight_required:
- false
- prop_65:
- Y
- part_type:
- automotive
- epa:
- N/A
- regular_stock:
- false
- units_per_sku:
- 1
