CID DM 500 CNC Ported Symmetrical Port Big Block Chevy heads (Price per pair BARE) Chamber Softening The CID Heads BA LS7

The CID Heads BA LS7 intake manifold has an overall height of 9

Everything you would come to expect from the experience gained manufacturing and developing the world renowned 3V Cleveland heads and intakes

Near equal length runners with a choice of runner cross sectional openings at the plenum opening with enough material to increase area to 5

These work especially well in Nitrous Oxide and Turbo applications

2" deck block

CID DM 500 CNC Ported Symmetrical Port Big Block Chevy heads (Price per pair BARE) Chamber Softening The CID Heads BA LS7PRODUCT DESCRIPTION The CID DM 500 CFM Big Block Chevy head was a first for Australian Cylinder Head manufacturing at the time of their conception. Now these heads are made in the USA. At CID we wanted to address the issues associated with the factory BBC heads. First of all we wanted to make our head a symmetrical port head. No more left and right unequal length runners. We straightened up the valve angles to move away from the factory bath tub