It's not every day you get to hand-build a 638 HP LS9 engine that'll slip under the hood of a Corvette ZR1. Yesterday was one of those days. Here's how the magic is made. Yesterday we drove over ...

The LS9's output is nearly 103 horses per liter ... The Corvette ZR1 goes on sale this summer. Its 638-hp supercharged engine is complemented in the chassis by heavy-duty components not offered ...

Run on the dyno with the stock cam, long-tube headers, and no accessories, the 5.3L produced 342 hp at 5,300 rpm and 373 lb-ft of torque at 3,900 rpm. After installation of the LS9 cam and LS3 ...

Even the LS9 valve covers must be used because the alternator ... There’s probably 20 hp or more to be realized with a larger throttle body. See All 25 Photos 18.The engine uses Injector ...

In place of the 2.3-liter Roots blower on the LS9, the LSA featured a 1.9-liter supercharger, dropping power output to 580 hp and 556 lb-ft of torque. Like its fifth-gen Z/28 counterpart ...

This 1965 Corvette Sting Ray gets a 550hp supercharged LS9 V8 engine. Modern upgrades include ... where it produced 638 hp and 604 lb-ft (819 Nm) of torque. Mecum Auctions says the supercharged ...

Ultimately, the Corvette ZR1 LS9 produces an additional 58 horsepower compared to the Camaro ZL1's LSA and 82 hp more than the Cadillac CTS-V. The LS9 carries a similar advantage over the LSA when ...

Now fielding a supercharged 638-hp LS9 (604 lb-ft of torque) engine, it was the first factory Corvette to top 200 mph! It ran the quarter in a tick over 11 seconds (at 130.5 mph), blasted from ...

The combination was dialed in using a Holley HP EFI system and 83-pound injectors. Beginning with the LS9 cam supplied with the motor and run through 178-inch headers from American Racing ...

Now delivering no less than 780 HP and 984 Nm (725 lb-ft ... As far as exterior updates go, Geiger’s Camaro LS9 received a new front grille, 19 and 20-inch Goysar wheels wrapped in Michelin ...