Beyea Dirt Late Model Tri-Y Headers - SB Chevy 360-420 cu. in. w/ 18 Degree BRODIX Spread Port Heads - Tube Diameter: 1-3/4" x 1-7/8" x 2" - Collector Diameter: 3-1/2" 7 For over thirty years Airflow

For over thirty years Airflow Research has been defining technological leadership in cylinder head manufacturing and flow dynamics

White / Zinc Oxide

1979-1986 GMC C2500 Suburban

1977-1978 GMC C35

Radius Rod Stud

Beyea Dirt Late Model Tri-Y Headers - SB Chevy 360-420 cu. in. w/ 18 Degree BRODIX Spread Port Heads - Tube Diameter: 1-3/4" x 1-7/8" x 2" - Collector Diameter: 3-1/2" 7 For over thirty years AirflowProduct Description: Headers Dirt Late Model Tri Y 1. 75 to 1. 875 to 2 in Primary 3. 5 in Collector Steel Black Paint 18 Degree Head Small Block Chevy With more than 15 years in the header fabrication business, Beyea Custom Headers knows how to customize your power curve to create a broader range of power. Each Beyea Custom Headers has been tried and tested. Beyea Custom Headers are used by many of the top Modified and Late Model race teams and