This video captures the Porsche 718 GT4 RS running on a dyno while its 4.0 liter naturally aspirated flat six engine revs up to 9000 rpm. Viewers can hear the raw engine sound as the car is tested ...

Engine sound has long been treated as a performance metric, a kind of acoustic dyno sheet that tells drivers how hard a car is working. As digital audio and electrification spread, engine sounds are ...

YardstickThere is an old adage that you don't race dynos and flow benches. Manufacturers of test equipment use different standards and test procedures that will affect the results. This brings me to ...

Starting engine dynamometer pulls at low rpm is hard on the dyno and hard on the engine. Today, engine dynamometer testing is an integral part of many HOT ROD engine buildups and product tests.

To this day, Shelby American can build the Cobra of your dreams if your pockets are deep enough to own a piece of history. For example, the aluminum-bodied 427 S/C without the engine and transmission ...

LT4 is how GM calls the blown V8 of the Camaro ZL1, and it’s a serious piece of small-block engineering thanks to roto-cast aluminum heads, larger combustion chambers than the LT1 on which it’s based, ...

If you want to dyno test your tuner car, you can probably find a couple of good facilities in any nearby major city. If you want to do similar testing at a smaller scale, though, you might find it’s ...

Pete Aardema and Kevin Braun build custom racing engines in San Diego, California and their latest creation is a 6.0-liter V12 that’s being prepared to go hunting for land speed records. While Aardema ...

It's a shame most car guys never get to witness the fury and violence of an engine-dyno pull firsthand. Abusing your eardrums with the cackling, popping, and deafening bass of all those cubic inches ...

While Rob Dahm’s garage is no stranger to monstrous rotary engines, including four-rotor units cranking out more than 1,000 horsepower, this one is mind-bending. Here we have a massive, ...

YardstickThere is an old adage that you don't race dynos and flow benches. Manufacturers of test equipment use different standards and test procedures that will affect the results. This brings me to ...