We put the G82 M4 CSL on the dyno to find out just how powerful BMW’s ultimate M4 really is — and compared it directly to a G80 M3 RWD. Both cars, both S58-powered, but how much difference is there in ...

Real-World Showdown: We put Don Hicks' Ford 393-Cleveland Stroker Motor to the Test on Westech Performance's Engine and Chassis Dynos. The Results May Surprise You. How much power do you lose through ...

With an official output of 1068 horsepower and a top speed of over 230 miles per hour, the new C8-generation Chevrolet Corvette ZR1 is a truly ridiculous machine on paper. (And, as we found during our ...

Unless you can get your hands on one of the ultra-rare suicide-door examples, the tenth-generation Lincoln Continental was never a particularly cool car. Heck, even with the suicide doors, it's really ...

A stock-based GM 4.3L V6 shocks the dyno with 1,400 horsepower at 33 PSI, proving this twin-turbo truck engine is far stronger than expected.

Testing. It’s the backbone of hot rodding, and it’s how we separate facts from fiction. It’s also where we generate even more questions, which often results in, you guessed it, more testing. The ...

Another turbocharged BMW M performance car has hit the road, and you know what that means: another chance for a dyno test to show that BMW's official numbers significantly understate the level of ...

Hennessey Performance Engineering has recently taken delivery of a black-painted RHO, which is the inline-six replacement for the no-nonsense TRX in Ram's light-duty truck lineup. While it may not be ...

Nissan's Decherd plant runs extensive testing on VQ V6 engines including 300-hour durability runs and monthly quality checks ...

604 Inch Ford Big Block Dyno Tested at Westech Makes over 1,300 hp! Westech Performance dyno tests a 604-inch stroker big-block engine with 15:1 compression and twin Dominator carbs! This build makes ...

A dyno test showed dangerously low oil levels can produce a 10 percent horsepower bump in an LS V8—for one run, at least. It’s Sunday, Sunday, Sunday, and do I have an offer for you! No, it’s not ...

Hennessey Performance dyno tested the C8 Corvette ZR1 and recorded 1,050 hp, a figure that appears to contradict its 1,064-hp factory crank rating. Automakers typically advertise crank horsepower, ...