JerriVette

There are some rumors floating around the internet that the c8 LT1 derived motor will be 6.6 liters to jhit 500 plus hp...

anybody else hear of this rumor and believe gm needs more than 6.2 liters to hit an emissions legal 500 plus hp?

what do you think?

will GM use various technologies like thermal management? Port and direct injection? Electic steering and braking? Electric water pumps? Higher pressure injectors? Anything else you guys can think of...or will gm just increase displacement to 6.6 liters?

i anticipate the DCT will also allow greater control of engine operation and greater fuel efficiency so the engine can be even more finely tuned to produce more power...

of course this is all just guessing.

JMB

The 6.6L is a truck motor, not an LT2

JerriVette

The rumor was the 6.6 liter LT2 corvette engine is a derivative of the 6.6 liter truck motor..

i have no clue one way or the other...

thats why Im asking the question...

RJ-92

Not likely, since the 6.6L Duramax is a diesel.

NY09C6

GM did just design a 6.6l gas engine for their HD trucks. It replaces the 6.0l gas engine.

but Ford one upped them and created a new 7.3l gas engine.

Kodiak Bear

Just to confuse things I saw somewhere on the web, the LS2 was going to be 6.3 which makes absolutely no sense whatsoever, as a tenth of a lt. is between 6 or seven ci.

The gas truck 6.6 is a stroker of the 6.2 on an iron block which claims greater durability and mid range torque. No reason the same forged crank can't fit into the 6.2 LS but that makes high rpm a bit more of a challenge On the other hand several engine sites report waiting to see if that really can be done as the crank would be much less expensive than an after market unit for some one who wants to add some inches of displacement.

.Daniel.

I think they will reuse the Cadillac blackwing engine in the new C8, 4,2L twin turbo v8

kozmic

Bringing back 400?

Maybe the “ME Corvette” thing is a ruse, and really, this camo’d thing we’re seeing is the new halo Firebird T/A for a re-born Pontiac?

~Josh

The new 6.6 Fiero.

Quinten33

There’s a 6.6L gas engine in the Silverado/Sierra HD. It makes about 470lb-ft of torque but less than 420hp. The rumor was started by a member/vendor of a Camaro forum from a company called Frankenstein Engine Dynamics(FRE). The guy said that he was told that they are going to use an ALUMINUM 6.6L OHV V8 in the mid-engine Corvette. He was told this at the Performance Racing Industry(PRI) show in Indianapolis, which is the SEMA of the performance/racing world.

FRE is a reputable company, and PRI is a very important show for companies like FRE to promote and improve their business. I assume that Chevy Performance was sharing information on upcoming engines with companies at PRI so that those companies can prepare parts for the new engines.

LawrenceFromTorrance

Every time I've heard the engine in a C8 it didn't sound like it had very large displacement. Because of that I'm thinking smaller than 6.0 liters.

captain vette

I think a 6.6 will be to big to fit in that body

Sub Driver

You realize bigger displacement doesn't always mean physically bigger engine size right?

MitchAlsup

Note the LS7 (7.0L) was not dimensionally different than the 6.2 LS2/LS3.

Why do you think adding a few mm to the stroke will make the exterior dimensions larger?

Warp Factor

I had a 5.2 Fiero. Neat car for its day, with some groundbreaking and extremely creative technology. People who trash the Fiero are simply running their ignorance up the flagpole for all to see..

Quinten33

Besides that, a NA OHV V8 would take up a lot less room than this twin-turbo DOHC one:


The NA OHV Motor has a smaller intake manifold setup and doesn’t have all of the turbocharger hardware:


And you can see that the NA engine doesn’t require intercoolers integrated into the intake system like the turbocharged engine has.

.Daniel.

Yes, exactly, that's why I think they will reuse the Cadillac 4.2 liter V8 twinturbo, almost all car manufacturers are going turbo and smaller engines. I don't think the v8 in c8 willl be any bigger than in c7.
I think C7 will be the last big v8 manual Corvette.


Emission regulation etc is forcing everyone to make smaller engine, and cheapest way to get more power on small engine is put turbos on it, or turbo and supercharger that some manufacturers are doing.

ZL-1

The small twin turbo dohc V8 will be in later performance versions of the C8. An updated version of the current 6.2L V8 is the only engine available in 2020.

Michael A

A stroker 6.6L won't help power. Horsepower is limited by the valve curtain area and cylinder shrouding. Unless you increase the bore, allowing bigger valves and less shrouding, just increasing the stroke won't increase power on the high end.

Warp Factor

Yes and no. Why does a 350-ish cubic inch engine make so much more power today, than it did 20 years ago, with the same bore spacings?