Chevy SBC 350 Aluminum Valve Covers Tall w/Hole [Black] it has a square bore

it has a square bore carb flange instead of a spread bore

The Speedmaster MidRise Air design features the identical plenum and runner design as the normal MidRise

Additional fittings may be required depending on your application

Intake manifold (Dual Plane)

non-stick PTFE inner core

Chevy SBC 350 Aluminum Valve Covers Tall w/Hole [Black] it has a square boreCover your valvetrain with a set of Speedmaster cast aluminum valve covers. Their strong die cast aluminum design ensures an excellent gasket seal and dissipates heat better than many other covers. They come in tall and short models, and most include bolt in baffles that can be replaced.