How big is the intake valve on a 305 Vortec?
How big is the intake valve on a 305 Vortec? The Chevy 305 Vortec engine's intake valve measures 1.94 inches. The engine's exhaust valve measures 1.5 inches. The intake manifold has a .325-inch sealing surface. The engine's rocker arms are self-aligning and measure 1.6 inches. The Chevy 305 Vortec's valve springs measure 1.241 inches in outside diameter. Is the Chevy 305 Vortec engine still in use? The Chevrolet 305 Vortec engine was built by GMC. The Vortec engine was featured on the 1996 GMC Sierra C/K 1500. The small-block Chevy (SBC) engine is now sold on the aftermarket. How big...