BMP 063041 - Intake Manifold Chevy Big Block 10.200" 4500 Carb FlangeBill Mitchell Products Intake Manifold Chevy Big Block 063041 10. 200" 4500 Carb Flange To provide an ample volume of air and fuel for large cubic inch engines, while maintaining good velocity was the challenge facing Bill Mitchell Products engineering team. Following extensive R&D, the BMP BBC 4500 intake became a reality. It's ideally suited to 540 and larger displacement, and has proven to deliver excellent power for big 540+ inch motors! Best of