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Just wanted to post on here, as I have seen no less than a thousand posts with questions about the 6L80E, specifically about the power threshold of a stock unit. I have a 2014 GMC Sierra SLT Crew Cab Standard Bed stock 3.42 gears stock drive shaft stock 20" rims/tires 6.2L fully forged top/bottom end "Armageddon Twin Nagasaki's" (GT3582R's) e-boost 2 gauge Z06/LT4 fuel system 365lph in-tank Armageddon fuel pump QTP exhaust cut-outs and laid down 965rwhp/850 rwtq on a mustang dyno with 18psi on 116 race fuel (cut-outs open). I say all of this because the stock transmission detonated the 4-5-6 shaft (intermediate hub) near the splines. I took it to a "race shop" that said they would upgrade as much as they could; and was told at the time, there were limited aftermarket parts available for the 6L80E. This was mid 2018 with less than 10K miles on the truck and about 500 miles on the engine/turbo build and I discovered that was not entirely true. I drove the truck after their work, with "spirited road driving" while the roads were wet no less. Long story short; they f'd me and I detonated the 4-5-6 stock intermediate shaft again within 100 miles and no traction at all. They apparently replaced all parts that were broken with stock parts! Moving on, I took my truck to a different shop and researched my a** off and found PATC Transmissions. I had a warm and fuzzy after speaking with them and ordered the Phoenix Level 4 Master Rebuild kit among a few other minor accoutrements and re-tuning of my TCM by Mike from Century Automotive. It is now APR 2019 and I am about 1 1/2 weeks away from having the my billet planetary gear mailed to me; for the new, more reputable shop in my area to install all of this PATC bada**ery. If anyone is truly interested, I will post new info once I put the new Phoenix Master Rebuild kit through the ringer with the full weight/horsepower/torque of my particular application...I hope this helps if there are some lost souls out there that may be headed down the same long. hard. road. of a "full send" like myself! Please post if you have questions/comments/concerns; as I have "been there done that and forgot the t-shirt" with the L86/6L80E so far.

John Goreham Contributing Writer, GM-Trucks.com 9/14/2015 Can any production car, at any price, beat the 2016 Corvette Z06 on a road-course type track? If you are a fan and subscriber of Car and Driver magazine, you may already know the answer. CD has a unique format that they have been using now for many years. They go to the same racetrack, and they run the cars with testing equipment to record that car's best lap time. The best time the car can lay down, at the hands of the near-professional CD editorial staff, goes on record. It is put up or shut up time. This year the newest top-spec 'Vette laid down an amazing time. Nothing even close to the Corvette's price can match it on the Virginia International Raceway road course past or present. But that was not our question. We asked, could anything at any price that is a true production car beat this relatively affordable Corvette? Before we answer, it is important to note that the Corvette Z06 is not some kind of white buffalo that GM talks about but does not really make. GM will move over 8,000 of the 2015 Z06 according to our go-to Corvette expert, Patrick Rall. About 20% to 25% of the total Corvette volume. That is a hell of a lot more cars than the Miata sold in 2015, and everyone considers the Miata a pretty mainstream sports car. If you want to know if the Corvette Z06 is unbeatable you are going to have to buy Car and Driver's October issue and check out pages 66 and 67 (or peek at one on the newsstand ). We will give you a quick rundown of some cars its 2:44.6 lap-time beat. First, its closest competitor was the 2015 McLaren 650S Spider. Behind that was a 2016 Lamborghini Huracan LP610-4. Next up 2008 Viper ACR. The new ACR couldn't make it to the show and CD talks about that car separately in the issue (page 114). The 911, all the Ferraris and all the Mercedes cars are lower on the list as well. That's as much as we will say. Talking about the Z06 and its performance on the VIR course Jim Mero, a Chevy ride and handling engineer, mentioned that CD will use up to 20 laps to find a car's fastest time. Interestingly, Mero says he spent more than 80 laps on the track before he tried to put down a fastest lap. Tell us your guess about the Z06 being the fastest production car. In your answer be sure to make your case that any car you think is faster is actually a production car. Meaning you could go to a car dealership and buy one (if you had the money).

John Goreham Contributing Writer, GM-Trucks.com 4/24/2015 It is very refreshing when an automaker comes right out and says that its current model blows the doors off all the prior legacy cars. That is exactly what Chevy did when it built the new 2016 Corvette Z06. Surf around the Chevy marketing information on the Z06 and one cannot help but keep tripping over comments like "Z06 IS THE MOST CAPABLE CORVETTE EVER." GM even uses all caps just to be sure that you saw it. Despite this car being the ultimate 'Vette, Chevy knows there are enthusiasts out there that want it to be even more special just for them, so it is building 500 C7.R Edition cars meant as a tip of the hat to the racing version of this supercar. Harlan Charles, Corvette product and marketing manager summed up the 2016 C7.R Edition Corvette, saying “Combined with the 650-horsepower supercharged LT4 engine, true aerodynamic downforce and performance technologies such as Magnetic Ride Control, Performance Traction Management and an electronic limited slip differential, the Corvette Z06 C7.R Edition offers capability matched only by an elite fraternity of the world’s supercars and special-edition exclusivity that is sure to make it an instant collector’s item.” So what did Chevy to do make this new collector's Corvette even more "most capable-er?" Here is quick rundown: Offered on coupe and convertible models with 3LZ trim Available in Corvette Racing Yellow Tintcoat (new for 2016) or Black exterior colors C7.R Edition graphics package Z07 Performance Package with Brembo carbon ceramic brakes and Michelin PS Cup 2 tires Yellow brake calipers Black wheels with yellow accent strip and Corvette Racing-logo center caps Visible carbon fiber ground effects package New visible carbon fiber hood section Grilles and vents finished in Spectra Gray Metallic Jet Black leather interior with sueded microfiber accents on the instrument panel and doors Sueded microfiber-trimmed Competition Sport Seat, steering wheel and shifter Yellow contrast stitching throughout the interior Carbon fiber interior trim package (high-gloss) Corvette Racing sill plates Numbered C7.R Edition interior plaque showing the build number, starting with VIN 700001 Special indoor car cover with C7.R graphics. These special bits are added to the Z07 Performance Package. The C7.R also has carbon ceramic brakes, and will come with a specially serialized vehicle identification number. Check with your dealer early-summer if interested. Chevy says the cars will be available "later this year" and they may sell fast.

By Zane Merva Executive Editor, GM-Trucks.com 10/1/2014 The new 2015 Z06 will be among the fastest vehicles on the road, ever. Today Chevrolet announced the new 650-horsepower Corvette flagship equipped with an 8-speed automatic will accelerate from zero to 60-MPH in only 2.95 seconds. If purchased with a 7-speed manual, the car will be slightly slower, making the dash to 60 in 3.2-seconds. Quarter mile times are quick; just 10.95 seconds for the automatic and 11.2 seconds with the manual. Braking performance is also exceptional. 60-MPH to zero only takes 99.6-feet. Lateral acceleration tops out at 1.2G. These figures were achieved with the optional Z07 performance package, Brembo carbon ceramic brake rotors, and Michelin Pilot Sport Cup 2 tires. The 2015 Corvette Z06 starts at a bargain of $78,995 and goes on sale in early 2015. “The Corvette has long been known as America’s sports car,” said Mark Reuss, General Motors’ executive vice president, Global Product Development. “With the capability of the new Z06 rivaling the best performance cars in the world, we will also be America’s Supercar.”

By Zane Merva Executive Editor, GM-Trucks.com 8/22/2014 Chevrolet will price the 2015 Corvette Z06 Coupe at $78,995 and the convertible at $83,995. Laying claim as the fastest and most powerful Corvette ever built, the Z06 has a supercharged 6.2L LT4 engine producing 650-horsepower. That's more horsepower than was spec'd for the sixth-generation ZR1, which only had 630. Considering the ZR1 cost north of $110k, a sub-$80,000 Z06 sounds like a bargain. Here's some quick details on Z06 pricing and packaging: Standard magnetic ride control, performance traction control, and electronic limited slip differential Optional Performance Data Recorder (PDR) Standard heads-up display Aluminum frame is 20% stiffer than previous Z06 Carbon Fiber Ground Effects Package [$2,995] Adds carbon fiber front splitter, carbon fiber rocker panels, and a larger rear spoiler Z07 Performance Package [$7,995] Adds an adjustable version of the carbon fiber ground effects package, Brembo carbon ceramic-matrix brake rotors, and Michelin Pilot Super Sport Cup tires Available in 1LZ, 2LZ, and 3LZ trim packages Optional leather wrapped interior, competition sports seats, carbon fiber interior trim, and a visible carbon fiber roof for the Coupe Several exterior color options and brake caliper color options Two transmission options - 7-speed manual or 8-speed automatic The 2015 Corvette Z06 amounts to a more powerful but a-la-carte version of the previous ZR1. Enthusiasts rejoice!

https://www.youtube.com/watch?v=kfhBg5O9i2U 2015 Chevrolet Corvette Z06 is Most Capable, Ever DETROIT – Chevrolet today introduced the most track-capable Corvette in the brand’s history – the 2015 Corvette Z06. It stretches the performance envelope for Corvette with unprecedented levels of aerodynamic downforce, at least 625 horsepower from an all-new supercharged engine, and an all-new, high-performance eight-speed automatic transmission – all building on the advanced driver technologies introduced on the Corvette Stingray. “The new Z06 delivers levels of performance, technology and design that rival the most exotic supercars in the world,” said Mark Reuss, president, General Motors North America. “And the Z06 leverages the engineering expertise of GM, offering the choice of two world-class transmissions, supercar performance without supercar fuel consumption and technologies that make it easier to fully enjoy the incredible experience of driving it.” The 2015 model is the first Corvette Z06 to offer a supercharged engine, an automatic transmission and, thanks to a stronger aluminum frame, a removable roof panel. The new, supercharged 6.2L engine is expected to deliver at least 625 horsepower (466 kW), and can be matched with either a seven-speed manual or an all-new, high-performance eight-speed automatic transmission with paddle shifters for manual control. The aluminum frame carries over from the Corvette Stingray and will be used essentially unchanged for the Corvette Racing C7.R. A track-focused Z07 Performance Package adds unique components for true aerodynamic downforce, Michelin Pilot Super Sport Cup tires for enhanced grip, and Brembo carbon ceramic-matrix brake rotors that improve braking performance and contribute to greater handling through reduced unsprung weight. Although development testing is ongoing, the Z07 package has already recorded some of the fastest lap times ever for a Corvette, surpassing even the ZR1. “The Corvette Z06 is a great example of the technology transfer between racing and production Corvettes,” said Tadge Juechter, Corvette chief engineer. “First, we took what we learned on the Corvette Racing C6.R and applied that to the all-new Corvette Stingray. Then, using the Stingray as a foundation, the Z06 and C7.R were developed to push the envelope of performance on the street and the track.” Supercharged, efficient performance The heart of the 2015 Corvette Z06 is the all-new LT4 6.2L supercharged V-8 engine, expected to deliver an estimated 625 horsepower (466 kW) and 635 lb-ft of torque (861 Nm). To balance performance and efficiency, the LT4 leverages the same trio of advanced technologies introduced on the Corvette Stingray: Direct injection, Active Fuel Management, or cylinder deactivation, and continuously variable valve timing. These technologies – combined with the fuel-efficient multi-speed transmissions, aerodynamic design and lightweight construction – help make the new Z06 surprisingly fuel efficient. “The supercharged LT4 engine delivers the greatest balance of performance and efficiency ever in the Corvette,” said John Rydzewski, assistant chief engineer for Small-Block engines. “It is one of the world’s only supercharged engines to incorporate cylinder deactivation technology, enabling it to cruise efficiently on the highway with reduced fuel consumption, but offer more than 600 horsepower whenever the driver calls up its tremendous power reserve.” To maintain the Z06’s mass and performance targets, the LT4 engine was designed with a more-efficient, more-compact supercharger. Even with its integrated supercharger/intercooler assembly mounted in the valley between the cylinder heads, the engine is only about one inch (25 mm) taller than the Corvette Stingray’s LT1 engine – while delivering nearly 37 percent more horsepower and 40 percent more torque. The new 1.7L Eaton R1740 TVS supercharger spins at up to 20,000 rpm – 5,000 rpm more than the supercharger on the Corvette ZR1’s LS9. The rotors are shorter in length, too, which contributes to their higher-rpm capability – and enables them to get up to speed quicker, producing power-enhancing boost earlier in the rpm band. That boost is achieved more efficiently, thanks to a new, more direct discharge port that creates less turbulence, reducing heat and speeding airflow into the engine. The LT4 engine also has several unique features designed to support its higher output and the greater cylinder pressures created by forced induction, including: -Rotocast A356T6 aluminum cylinder heads that are stronger and handle heat better than conventional heads -Lightweight titanium intake valves and machined connecting rods for reduced reciprocating mass -High 10.0:1 compression ratio – for a forced-induction engine – enhances performance and efficiency and is enabled by direct injection -Forged aluminum pistons with unique, stronger structure to ensure strength under high cylinder pressures -Stainless steel exhaust headers and an aluminum balancer that are lighter than their LT1 counterparts -Standard dry-sump oiling system with larger cooler capacity than Z51; used with dual-pressure-control oil pump. -The LT4 will be built in Tonawanda, N.Y., and at the new Performance Build Center in Bowling Green, Ky. Eight speeds, no waiting The supercharged LT4 is offered with a standard seven-speed manual transmission with Active Rev Match, or an all-new 8L90 eight-speed paddle-shift automatic transmission designed to enhance both performance and efficiency. “Unlike most ultra-performance cars, the Corvette Z06 offers customers the choice between two transmissions to suit their driving styles,” said Juechter. “The seven-speed gives the driver the control of a true three-pedal manual transmission with perfect shifts enabled by Active Rev Matching. The new eight-speed automatic offers drivers the comfort and drivability of a true automatic transmission, as well as lightning-fast shifts and manual control for track driving.” The seven-speed manual incorporates rev-matching technology for upshifts and downshifts. This driver-selectable feature can be easily engaged or disengaged via paddles on the steering wheel. The seven-speed is used with a new dual-mass flywheel and dual-disc clutch, which deliver greater shift quality and feel through lower inertia. The eight-speed automatic is tuned for world-class shift-response times, and smaller steps between gears keep the LT4 within the sweet spot of the rpm band, making the most of the output of the supercharged engine for exhilarating performance and greater efficiency. For performance driving, the transmission offers full manual control via steering wheel paddles, and unique algorithms to deliver shift performance that rivals the dual-clutch/semi-automatic transmissions found in many supercars – but with the smoothness and refinement that comes with a conventional automatic fitted with a torque converter. In fact, the 8L90’s controller analyzes and executes commands 160 times per second, and wide-open throttle upshifts are executed up to eight-hundredths of a second quicker than those of the dual-clutch transmission offered in the Porsche 911. “There’s no trade-off in drivability with the new 8L90 eight-speed automatic transmission – it was designed to deliver performance on par with dual-clutch designs, but without sacrificing refinement,” said Bill Goodrich, assistant chief engineer for eight-speed automatic transmissions. “It is also the highest-capacity automatic transmission ever offered in a Chevrolet car.” Featuring four gearsets and five clutches, creative packaging enables the GM-developed eight-speed automatic to fit the same space as the six-speed automatic used in the Corvette Stingray. Extensive use of aluminum and magnesium make it more than eight pounds (4 kg) lighter than the six-speed. Along with design features that reduce friction, the 8L90 is expected to contribute up to 5-percent greater efficiency, when compared with a six-speed automatic. The eight-speed automatic will be built at GM’s Toledo, Ohio, transmission facility. Designed for downforce The performance targets of the Z06 also posed a challenge for the design team, which had to create a striking design that also contributed to increased capabilities. “Practically every exterior change served a functional purpose, as this beast needed more of everything,” said Tom Peters, Corvette design director, “The flared fenders accommodate larger, wider wheels and tires for more grip. The larger vents provide more cooling air to the engine, brakes, transmission and differential for increased track capability. The more aggressive aerodynamic package generates true downforce for more cornering grip and high-speed stability.” The design changes began not with the exterior panels, but the tires. To deliver the levels of grip needed for the Z06’s performance targets, the Z06 was fitted with larger Michelin tires (Pilot Super Sport tires for the Z06; Sport Cup 2 tires with the Z07 package). The P285/30ZR19 front tires are 1.5 inches wider than the tires on the Stingray, while the 335/25ZR20 rear tires are two inches wider. To cover the wider tire tread, the fenders of the Z06 were extended by 2.2 inches (56 mm) at the front, and 3.15 inches (80 mm) at the rear. These extensions give the Corvette Z06 a wider, lower appearance further emphasized by a unique rear fascia. It incorporates the same taillamp assemblies as the Stingray, but on the Z06 the taillamps are pushed approximately three inches farther apart, toward to edges of the body. The tires are mounted on lightweight, spin-cast aluminum wheels that are also wider than the Stingray (19 x 10 inches in front and 20 x 12 inches in the rear). Their open, ultralight design showcases the massive Brembo brakes, which are part of the design aesthetic:

We're only a few short weeks away from the 2014 North American International Auto Show (aka the Detroit Auto Show) and Chevrolet is not content to let Ford steal the entire show. The rival blue oval has already announced that it will debut the new Mustang on December 11th 5th and show the car in Detroit in January. With news of the second seventh generation Corvette model, the Z06 looks to get plenty of attention. Move over Mustang! GM-Trucks.com will be LIVE in Detroit for the 2014 auto show and will cover the debut of the 2015 Z06. Stay tuned! ------------------------- Chevrolet to Introduce 2015 Corvette Z06 at Detroit Show Most-capable Corvette ever will lead industry’s broadest range of performance cars DETROIT – Chevrolet will introduce the 2015 Corvette Z06 next month at the North American International Auto Show in Detroit. It will be the most track-capable Corvette ever, designed to deliver supercar levels of performance through unique powertrain, chassis and aerodynamic features. The Corvette Z06 will complete Chevrolet’s performance car lineup, which will also see the addition of the Corvette Stingray Convertible, Camaro Z/28 and SS sedan. “Chevrolet is America’s favorite performance car brand, and for 2014 we are going to offer enthusiasts more choices than ever before,” said Alan Batey, senior vice president, Global Chevrolet. “No other manufacturer will be able to match the breath of performance cars from Chevrolet.” Chevrolet sells one out of four performance cars in 2013 For the first 11 months of 2013, Chevrolet has accounted for about 25 percent of all performance car sales in the U.S. as Corvette and Camaro continue to lead their respective segments. Corvette outsold its closest competitor, the Porsche 911, for the first 11 months of 2013. This is all the more remarkable given Corvette production was halted for six months as the Bowling Green, Ky., assembly plant prepared to build the 2014 Corvette Stingray. In November, Corvette sales jumped 229 percent year-over-year, as demand for the new Stingray continues to outstrip supply. Camaro also outsold its closest competitor, the Ford Mustang, for the first 11 months of 2013. Camaro enters December with a 4,093-unit lead in total sales. More importantly, Camaro has an estimated 10,000-unit lead in retail sales. If that lead continues through the end of the year, 2013 will be the fourth consecutive year Camaro has been the best-selling sports car in the U.S. Four new performance cars for 2014 The sales lead for Chevrolet is expected to accelerate as the brand adds four new performance cars to the lineup, including: First full calendar year of sales of the 2014 Chevrolet SS sedan: The all-new SS, which went on sale in October, is based on a race-proven, global platform that underpins the Camaro, Caprice police vehicle and, in Australia, the high-performance Holden VF Commodore. Elements including lightweight aluminum hood and deck lid panels help give the SS a nearly 50/50 weight balance, while the performance of its 6.2L V-8 – rated at 415 horsepower – and six-speed automatic transmission enable 0-60 mph acceleration in five seconds flat. First full year of sales of the 2014 Corvette Stingray Convertible: The Stingray Convertible, which goes on sale this month, shares identical chassis tuning and performance technologies with the coupe, with structural changes limited to accommodations for the folding top and repositioned safety belt mounts. As such, the Stingray Convertible requires no sacrifices for a drop-top driving experience, offering up to 460 horsepower /465 lb-ft with the available performance exhaust system; capable of more than 1 g in cornering; and sprinting from 0-60 in under 4 seconds. Arrival of the 2014 Camaro Z/28: The Camaro Z/28, which arrives in dealerships in the second quarter of 2014, will be the most track-capable Camaro ever. Recently, the Z/28 logged a 7:37.40 lap on Germany’s legendary Nürburgring road course, a time comparable with some of the world’s most prestigious sports cars – and the Z/28 lap was completed in the rain. Debut of the 2015 Corvette Z06: The all-new Corvette Z06 will make its public debut at the 2014 North American International Auto Show in Detroit in January. Production is expected to begin in late 2014.