The Performance Build Center inside the Corvette Assembly Plant in Bowling Green will soon be producing a new hand-built V8 engine, but don’t go thinking that it’s for the next generation Mid-Engine C8 Corvette just yet.
This week Cadillac announced their CT6 V-Sport Sedan which will feature the brand’s first-ever twin-turbo V8 engine. The engine will come with two different power options: a 550 horsepower version with 627 lb-ft of torque and an optional 500 horsepower V8 with 553 lb-ft of torque for non V-Sport models. At the heart of the design is a “hot V” configuration which transposes the conventional layout of the cylinder heads’ intake and exhaust system and sees the turbochargers mounted at the top of the engine within the valley between the heads. The “hot V” design is said to virtually eliminate turbo lag and reduce the engine’s size for better packaging.
The rumors about the mid-engine C8 Corvette over the last few months have included various engine options that specify a 4.2 liter V8 as well as the LT1 6.2 liter naturally aspirated engine found in the current Stingrays and Grand Sports. A third engine, sized at 5.5 liters and producing as much as 850 hp was also listed in a market analysis document from IHS Markit (and discussed at the Corvette Forum) which details manufacturer engine production through 2024.
Further “evidence” that this new engine from Cadillac will be shared with the C8 program is the fact that they will be hand assembled at the Performance Build Center in Bowling Green, with the number of hand-built engines estimated to be around 3,000 per year. However, this contradicts the IHS Markit study which listed the 4.2 liter twin turbo as being assembled at the Tonawanda Powertrain Plant outside of Buffalo.
One of the biggest reasons to doubt that this particular engine will find its way to the C8 are those CAD drawings which were posted on the Corvette Forum late last year. The CAD drawings seem to contradict a hot V configuration as well with images that show an naturally aspirated 6.2 liter and a twin-turbo design where the turbos are located low and outside of the engine block.
The new engines from Cadillac are said to be a “brand-exclusive” but that doesn’t mean that a motor from this new “family” could be made available for the ME Corvette. Make the changes required for performance and packaging into a mid-engine configuration and there’s your “exclusive” 4.2 liter engine for the Corvette.
I do want to sound off though on one of the “features” of the new Cadillac engine that I absolutely despise: Start/Stop Technology. Tadge has surveyed an audience a time or two while I’ve been in attendance and nobody wants that on a Corvette. There is something disconcerting about sitting at a red light and the car just shuts off leaving the occupants in an unnatural silence. Tadge never said never (so there is still a chance as engineers rarely have the final say when it comes to MPG ratings), but I think he knows how Corvette owners feel about Start/Stop Technology.
I would love to hear your thoughts on this new engine from Cadillac and if you think we are looking at a new V8 for the Corvette. Sound off in the comments below!
[SPIED] CAD Images of the Mid-Engine C8 Corvette Leaked to the Web
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[VIDEO] Mid-Engine C8 Corvettes Driving in Colorado