To understand flow-bench readings, one must also understand that piston velocity and the size and shape of the port and valves determine the amount of flow through the cylinder head.

All the cylinder heads were tested at the same valve lift-to-diameter ratios (L/D) and at the same 25-inch flow pressure. Note the use of ear protectors—it gets pretty loud!

Modern fuel metering systems are designed to reduce fuel consumption and exhaust gas emissions in internal combustion engines to meet future emission legislation limits. The first step to achieve this ...

Chevy High Performance tech article on evaluating the performance of aftermarket heads with dyno testing. Find all the details inside Chevy High Performance Magazine.

Check out the new Trick Flow Specialties LS-Series Cylinder Heads! They are specially designed for big-block and small-block Chevys, and most notably, the LS-Series engines! Check out performance ...

A propylene glycol aerosol was used for seeding in the LDV experiments. The observed and measured back-flow from the downstream plenum into the cylinder casts serious doubt on the usefulness of using ...