The ZR1's 638-horsepower LS9s are being screwed together as we speak, and their meticulous assembly says volumes for GM's newest supercar. In this shot, the Eaton TVS supercharger has been installed, and the engine is sealed and pressure tested. Air is forced into the oil and water passages and the computer makes sure there are no leaks. If the pressure isn't held, the builder has to figure out where the leak is occurring and fix it before the engine can move farther down the line.
Once the manifolds and the dual-disc clutch are installed, the LS9 is cold balanced and cold dyno tested. Finally, finished engines are shipped to the off-site hot dyno facility. And then, they're bolted into your ZR1s, which we're hoping one of you will lend to GMHTP for the sickest drag test of all time.