It is possible to run solid flat tappets on a hydraulic flat-tappet cam and even mechanical roller lifters on a hydraulic-roller cam. Putting solid lifters on a hydraulic cam will gain about 500 rpm ...

With horsepower seemingly growing on trees these days, picking a set of high-flow cylinder heads for your engine combination is the easy part. A mother load of rotating assemblies and aftermarket ...

Do you know how to choose a camshaft? This seems like a simple task because most of us understand what we want from an engine. However, propose this question to 50 Chevy fanatics and you’re bound to ...

I have a dealer repair bill for $3,751 for replacing 12 hydraulic valve lifters in the six-cylinder, 200-cubic-inch engine in my 1966 Ford Mustang. The dealer's shop people insist that the head was ...

Engineers at DaimlerChrysler once analyzed valve trains with nothing more than old Fortran programs. But 3D dynamic-simulation software now handles the task with features tailor-made for modeling fast ...

I have a dealer repair bill for $3,751 for replacing 12 hydraulic valve lifters in the six-cylinder, 200-cubic-inch engine in my 1966 Ford Mustang. The dealer's shop people insist that the head was ...

DEAR CAR TALK: I have a dealer repair bill for $3,751 for replacing 12 hydraulic valve lifters in the six-cylinder, 200-cubic-inch engine in my 1966 Ford Mustang. The dealer's shop people insist that ...

The rules in some racing classes restrict competitors to running hydraulic valve lifters. Cheaters have been known to run hydraulic lifters on a mechanical (solid) cam profile. Solid cam profiles ...