Edelbrock Intake Valve - 1.9 in. SPB1 spread port headers are required

spread port headers are required since the center ports are spread further apart then stock GM products

Pro-Flo 4 EFI System for 1986 & Earlier Small-Block Chevy Engines

1976-1981 Pontiac Laurentian

Dyno and track testing show significant noise reduction with little or no power loss

Edelbrock Intake Valve - 1.9 in. SPB1 spread port headers are required1 piece, swirl polished, hardened tip stainless steel exhaust valves with undercut stems for increased flow. Hard chromed valve stems are 11 32in. except where noted Edelbrock 1 Ford #60229; 60329 Int Valve 1. 900 x 4. 909Since 1938, Edelbrock has been committed to making the finest high performance products in the industry. The famous Edelbrock Intake Manifold, Edelbrock Aluminum Cylinder Heads and Edelbrock Water Pumps have become the industry