The valve guide problem pertains to the LS7 engine, which was installed on C6 Corvette Z06 models from 2006 to 2013. But not all Z06 Corvettes from the sixth generation are affected, and GM narrowed the issue down to Corvettes built between 2008 and 2011—roughly less than 10 percent of Z06 models.
What is the best year for the C6 Z06?
C6 Corvette: The Best Model Years, Ranked
- 10/10 2005 Corvette Coupe.
- 9/10 2008 Corvette Coupe.
- 8/10 2012 Centennial Edition Z06 Corvette.
- 7/10 2006 Corvette Z06.
- 6/10 2013 Corvette 427 Convertible.
- 5/10 2007 Corvette Special Editions.
- 4/10 2009 Chevrolet Corvette GT1 Championship Edition.
How much does it cost to fix a head on a C6 Z06?
The average cost for a Chevrolet Corvette cylinder head replacement is between $2,489 and $2,711. Labor costs are estimated between $810 and $1,022 while parts are priced between $1,679 and $1,689.
Is the LS7 reliable?
The LS7 engine is known to be quite reliable, even after owners push it to its limits. However, there has been one major problem that it suffered, and it has to do with its valves. General Motors released a statement that said the problem was traced back to the supplier of its cylinder heads.
What year LS7 have valve issues? – Related Questions
Why was LS7 discontinued?
GM has been slowly phasing out its Gen III LS crate engines since 2019 to make room for crate versions of the newer Gen IV LS and Gen V LT-series small blocks, Muscle Cars & Trucks noted. Chevy also recently discontinued the LT5 crate engine—the most powerful GM production engine—after just one year of availability.
Why is LS3 better than LS7?
Another area to look at is the LS3 vs. LS7 hp, where the LS7 is more powerful with 505 horsepower. LS3 has a value of 430 horsepower. An LS3 supercharger fitted during engine mods can boost its horsepower to impressive peaks.
Which LS motor is the most reliable?
LS7: Best.
LS Engine. Ever. In a world with 650hp Camaro ZL1s, along with even more powerful Hellcats and Shelby Mustangs, it’s easy to forget the influence and importance of the LS7-powered Corvette Z06.
How much HP can a LS7 handle?
You’re safe for up to 1,000 horsepower on the factory LS7 block, and a naturally-aspirated build is unlikely to challenge those limits. If you want to add some insurance on your way up to that limit, however, you’d do well to invest in forged pistons once you’ve crested 700 horsepower.
Why is the LS7 good?
The LS7 makes over 500 horsepower naturally aspirated right out of the box. As good as it is, racers and the aftermarket love this engine and tons of great parts are available. Each level will provide more performance than the one before it.
How high can you rev LS7?
The LS7 was revered at its launch for having the highest redline ever in a production pushrod V8—7,000 RPM—as Hot Rod noted at the time.
When was LS7 discontinued?
We knew as far back as June 2020 the LS7 would be phased out of production, though back then, it was assumed the 570-hp LS427/570, with its upgraded camshaft and cheaper price, would stand as its replacement for years to come. But both engines are officially done for, according to the manufacturer.
What is the highest revving V-8 engine?
Ariel Atom V8 – 10,600rpm.
Is the LS7 forged?
Forged from 4340 steel, the LS7 crank is ready to handle serious power. Nitriding on main and rod journals adds to the toughness, while aerodynamically profiled counterweights help with windage efficiency.
What does LS stand for in LS7?
In a car engine, LS stands for luxury sport, meaning it is majorly used in high-end cars that offer great performance like the Chevrolet. In a Chevy, the LS engine is the main V8 mainly used in General Motors’ line of rear-wheel-drive cars.
What replaced the LS7?
The legendary crate engine and its replacement, the more powerful LS427/570, are officially out at Chevy.
How much does a new LS7 engine cost?
Base Price Wet Sump $17,199 / Dry Sump Z06 $18,099
This LS7 complete engine features the new GM aluminum block and components selected to provide the absolute highest levels of performance. We’re your best source for this 700 hp LS7 and more because we will build to your specifications.
What does LS stand for?
LS stands for “luxury sport” and is what is featured in the names of most of the base models in the Chevy lineup.
What does the LS7 rev to?
On the dyno, the destroked LS7 lived up to the promise, singing confidently between 7,000 and 8,000 rpm—long past the 6,500 rpm or so where most LS engines top out. Its 619 peak horsepower came at 7,200 rpm and the engine topped the 600hp threshold from 6,400-7,500 rpm.
Is LS7 a block of aluminum?
The LS7 is a Gen. 4, 7.0L, aluminum small block engine. It was available in GM’s high performance cars between 2006 and 2015.
Which LS engines are all aluminum?
The Generation III 5.7L (LS1 and LS6) engines share little other than similar displacement, external dimensions, and rod bearings, with its predecessor (LT1). It is an all-aluminum 5,665 cc (5.7 L; 345.7 cu in) pushrod engine with a bore and a stroke of 99 mm × 92 mm (3.898 in × 3.622 in).
Is the LS7 a 454?
The LS7 454 V8 Engine
Essentially a hybrid of the L88 and LS6 engines, this iron block motor featured a 12.25:1 compression ratio, forged pistons, rods and crankshaft, and a solid lifter camshaft. Combined with a bore of 4.251 inches and a stroke of 4.00 inches, its a serious bit of kit.