Here in Part 2, we're going to finish up our LT4 with some good old-fashioned hot rodding techniques. Our Chevrolet Performance LT4 cylinder heads from Summit Racing offer good performance right out ...

Internal combustion engines are fairly simply machines. When you break it down, they are nothing more than air pumps. When it comes to making horsepower and torque, the simple fact is the more air you ...

With the C6 ZR1, a new threshold of factory performance was achieved with its supercharged LS9 engine. Rated at 638 horsepower, it was the highest-output engine in a regular-production Corvette until ...

In Part 1 of our LT4 engine build (click here), we inspected, machined, and assembled our LT1 turned LT4 short-block at Trans Am Racing under the watchful eye of Mark Jeffrey. Mark has a long-standing ...