Leaked CAD Drawing Purports To Show The C8 Corvette’s Twin-Turbo, DOHC ‘LT7’ V8
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The rear-mid-engine Chevrolet C8 Corvette seems destined to receive a twin-turbocharged V8 with dual overhead camshafts, and a CAD drawing allegedly leaked from within General Motors is the latest bit of corroborating evidence. The engine most likely won’t serve as the base powerplant option, as some earlier leaked CAD drawings appeared to include GM’s familiar 6.2-liter LT1 pushrod V8.
It is rumored that the new motor will be dubbed LT7, and it could herald a new generation of GM V8s.
The CAD image originated at CorvetteForum.com, and it shows a longitudinally-mounted V8 with a pair of low-hanging snails, one on either side, positioned toward the front of the engine next to either cylinder bank. Perched atop the engine are what appear to be water-to-air intercoolers, and out behind the motor, four exhaust tips – although they’re grouped together in pairs, unlike on the C7 Corvette’s LT1, LT4, and LT5 engines.
There’s a lot to take in here, and still plenty of details that are shrouded in mystery. We don’t know the LT7’s displacement, for instance (although an IHS Markit report puts displacement at 4.2 liters), nor on what model(s) it will end up seeing deployment. (Our money is on a C8 Z06.) Worse still, we don’t know when or where the rear-mid-engine C8 Corvette will at long last be unveiled, although we can say that we rather doubt it will turn up at next month’s North American International Auto Show in Detroit.
The C8 Corvette is expected to launch sometime in 2019 as a 2020 model. For the leaked CAD drawing of the LT7, visit CorvetteForum.com.
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Whatever the new engine(s) will be, there is no way GM will justify only developing it for the Chevrolet Corvette. It will definitely be shared with the pickup trucks, Camaro, etc.
If GM puts a DOHC V8 in the Camaro that would be very interesting!
Yeah! A DOHC V8 in a Camaro and I might change my Mustang GT for it!
Well they have done it before with the DOHC ZR1 in 1990, still an awesome car!
Expect it in all V 8 applications.
It could also base the coming Cadilac engine with their own set up on it.
Coming Cadillac engine? Cadillac will be getting a V8 engine exclusive to it only?
The word is Cadillac will get their own DOHC TT. V8.
Some speculate it may have the same block but get its own heads, intake and size. But we do know they will get their own V8.
It has been reported to be in the next Escalade.
If this is information is accurate it gives a clue as to the size and dimensions of the C8 Corvette as C7 Corvette Chief Engineer Tadge Juechter had once said a DOHC-4v V8 wouldn’t fit in the engine compartment of the C7; thus, one possibility of moving to a mid-engine layout for the Corvette was the only way to fit a DOHC-4v V8 engine.
This is accurate and GM info. GM accidentally confirmed it when they have had their lawyers sending out e mails to the various web sites asking it be removed because it was copywrited GM info.
Am I reading this wrong or you still do not accept that a mid engine is a done deal?
The only real questions were engines and AWD. Tadge the other day stated the ZR1 did not get AWD because it would not fit. The have no room for the drive shaft or even to run a unit off the front of the engine.
I have never seen where you can not fit a DOHC engine in. The dims are not off much from the C6 that had one in the XLR.
Wasn’t the Cadillac XLR based on the C5? And built along side the C6.
You are correct but the compartment space was about the same.
In fact the Nstar was used as a swap into many a Fiero’s and the fit in better than a LT Chevy.
I seen this last night.. I’ve also seen as some of you as well knkw that there is two variants of the DOHC TT V8 engines one smaller and one bigger (can’t exactly remedy the displacement off hand), and also there is still going to be a pushrod V8 most likely on the base models.
It could be Russian Social Media Marketing Propaganda
Didn’t know the Russians were so interested in misleading the public about the powertrain of a yet unreleased sports car, nor how important the powertrain of the C8 was to the integrity of the American republic.
Most people are just worried about the launch codes being hacked or what NK will to do next, but the engine in the C8 has got to be the biggest threat to America right now.
I was surprised Chevy hasn’t utilized turbos for V8 models sooner…GM has had a long list of quick turbo vehicles where their acceleration were ahead of their times…GNX, ’89 Trans Am, Typhoon/Syclone and the Cobalt SS switched from a supercharger to a turbo which increased performance…
They did it as the Callaway Corvette. They were sold in dealers and much of the development work was done by GM.
Cost was a major issue and packaging.
I drove one once and it was the best Tubo of the 80’s. It was fast with little lag and much smoother than the GN. But it was built right and not cheap.
Besides the present car was limited on traction now with the SC. The turbo would be more torque. One of their stated goals is to only put in as much as they can get to the ground.