2004 Chevrolet Astro Base Standard Passenger Van 3-door 4.3l on 2040-cars

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New Chevy Small Block crate engine has 405 hp, endless possibilities

With decades of history, the Chevrolet Small Block V8 has definitely stood the test of time, and the company has kept finding ways to make it better. At this year's SEMA Show in November, Chevy Performance is unveiling the latest upgrade to that legacy with the new ZZ6 350-cubic-inch (5.7-liter) crate engine. Offering 405 horsepower and 405 pound-feet of torque, the mill should add a big dose of power to any project car. For the ZZ6, Chevy is working to improve the Small Block's high-rpm performance. To make that happen, the engine has Fast Burn aluminum cylinder heads and an updated valvetrain inspired by the LS family of powerplants. Large intake runners help with the airflow, and the valve springs use a tapered design that allows for less reciprocating mass. The mill also packs a forged steel crankshaft and high-silicon aluminum pistons inside of a cast iron block. Chevy is offering the engine in two versions depending on what the builder needs. The Base configuration comes with an intake, distributor, water pump, and a few other parts but lacks carburetor and accessories. Conversely, the Turn Key option has everything, including the carb, air cleaner, starter, alternator, and more. More details about their availability will be announced at SEMA. NEW ZZ6 CHEVY SMALL BLOCK ADVANCES CRATE ENGINE LEGACY Revised Fast Burn heads with LS-inspired valvetrain enhance high-rpm performance 2015-10-02 DETROIT – Developed with contemporary technologies, including a high-rpm valvetrain, Chevrolet Performance's new ZZ6 crate engine offers builders a modern twist on the classic Chevy Small Block 350. It uses updated Fast Burn cylinder heads with beehive-style valve springs inspired by the LS engine family – a feature that enhances high-rpm capability, enabling the new high-performance engine to achieve 405 horsepower and 405 lb-ft of torque. That's more power than any factory produced 350 engine ever installed in a Chevrolet production vehicle and it's one of the most powerful 350 Small Block-based crate engines in the nearly 27-year history of the "ZZ" lineup. "The new ZZ6 is the ultimate ZZ 350-based crate engine from Chevrolet Performance," said Jim Campbell, GM U.S. vice president of Performance Vehicles and Motorsports.

GM applies for LT5, LTX trademarks... are new small block variants coming?

Recently discovered General Motors trademark applications for LT4, LT5, LT88 and LTX have observers wondering what kind of high-performance offerings could be on their way. A new LT4 would mark a return of the engine designation first used on the Corvette Grand Sport, SLP Pontiac Firehawk and SLP Chevrolet Camaro SS from 1996 and 1997. Supposition at Corvette Forum - which provided advance intel on the C7 like these leaked images - believes a new LT4 could go into the high-performance trim of the next-gen, 2015 Camaro that would be more powerful than the 580-horsepower Camaro ZL1.
Seeing an LT5 again would also be déjà vu - in its former life it was a 5.7-liter V8 for the C4 Corvette ZR-1 from 1990-1994 designed by Lotus, producing from 370 hp to 405 hp. A mix of rumor and hope is that the new LT5 will be a supercharged evolution of the 6.2-liter LT1 (pictured) placed in the new C7 Corvette, and that it will go into the C7 version of the ZR1 pumping out something like 700 hp.
The LTX trademark is, as with that last letter, a complete mystery. If the "X" isn't a generic way to denote the whole LT family, it's wondered if it LTX could refer to a crate motor offering like the LSX.

2015 Chevrolet Corvette Z06

"Corvette" has stood for American muscle, American sports car, and American supercar. In many cases, it still stands for America: liberty on the go, LS-powered freedom. There was also a time when it meant really impressive numbers that didn't equate to really impressive handling, and a not-so-nice cabin. The handling issue really turned the road-legal corner when the C5 Z06 was introduced in 2001, and by the time the super-duper ZR1 ended its run in 2010, Corvette had exorcised practically all of its dynamic demons. But when I took a seat in the 2015 Corvette Z06 on the first day of my week-long loan, I espied a few demons still squatting in the interior. When colleague Seyth Miersma drove the Z06, he wrote, "Listen, I'm not going to be the guy that dogs the Corvette for having a cheap-feeling interior, this generation has put those once-legitimate claims to rest." Well, I am going to be that guy, because I don't think those claims have been put to rest. One day Chevy will give us leather that looks and feels like leather, instead of the astonishingly thin hide that is laid directly on top of the instrument panel structure. This material was set off by white stitching, but there were no seams, just a trail of white stitches. In some places it was hard to tell where the leather ended and the plastic began; or it might all have been the same upholstery, I don't know. Five dollars of foam padding would add five thousand dollars of luxury to the cockpit. One day Corvette will have plastics that don't look so plasticky. I know General Motors can do it. And after years of thinking Corvette seats were too wide and flat, this latest Z06 is almost there. The seatbacks were nice, but the exaggerated side bolstering on the seat bottoms was too narrow and sharp. That's a personal preference, though; other drivers with thinner thighs will think differently. My complaint isn't that the interior isn't luxurious, it's that it's not luxurious enough. If Chevrolet was worried about pricing, it could add some kind of profligate package to the options list. Have some ex-Porsche people design it, call it the Teutonic Splendor Package, slap a massive price on it, and count the money. People will buy it, and no one will ever have to say again, "But the interior..." That said, this test car's cabin had every feature I wanted. The gauge cluster was bright, crisp, and readable in every shade of daylight.