One of the most difficult tuning problems to overcome is the seemingly ever-present engine vacuum leak. Vacuum is an important component of the internal-combustion process because it controls basic ...

It really was disappointing. The small-block Chevrolet rebuild went well and after the engine survived the flat tappet ...

Question: why is vacuum so important on a vehicle? Answer: Vacuum is created when each piston moves down the cylinder with the intake valve open. It will change as the engine is running at different ...

If you've taken a trip through the pits at a major drag race lately, you may have noticed that many of the Pro Stock, Gasser, Modified Production and Super Stock cars have begun sprouting unfamiliar ...

We've really been enjoying project C3 Triple-Ex, especially now that we've installed our 427ci "LS7 Killer" small-block, but we've recently encountered an issue common to street engines with ...

If there is a classic bolt-on for a small-block Chevy, it has to be the aluminum intake manifold swap. This story is aimed at the first-time bolt-on artist, and we’ve chosen CHP’s My Generation ’87 ...

The Universal Robotic Manifold from Porvair Sciences has been designed to operate with all brands of filter plate and waste collection reservoir tray. Adaptable to work with three different lengths of ...

EGR stands for exhaust gas recirculation, and the EGR valve is part of a system that does as the name implies: recirculate exhaust gas back into the engine’s intake manifold for a return trip to the ...