Spark 2

Is the Dry Sump system available on the six speed automatic, or limited

to the 7 speed manual? Can't find the answer and assuming they will

follow the C6 policy.

speedlink

Some answers are not yet known. Remember production starts in late July. Some tweaking is still being done.

Bill17601

Unless you can find specifics according to the sales brochure it comes with Z51. This is like those that said the active fuel management would not be used with a standard transmission. of course it is. The Z51 package is a package available with either transmission. It has also been confirmed in video, no I am not going to search, and is in the Gray C7. Seen by Forum members..

Gonzo

In regards to the transmission. Is the thought that Chevy will up te antee on the C6 auto in future C7's???

Joe aka - KODAK

Well when you look at the motor display that was at one of the shows it has an oil filler cap on the valve cover. If the engine was using a dry sump there is no need for this to be there.



One of the issues that has happend on the LS7 was that dealer techs where braking the seal that was on cap under the value cover and putting new oil directly into the top of the motor instead of in the oil tank, not a good idea. Totally destroys the motor, so why whould they put the cap on the engine cover if it has a dry sump?

Makes no sense, but at this point who really knows what the hell their doing

There's so many questions everyone has about BASIC information about the car that GM, doesn't seem to want to let the public know, I can't understand that, unless they don't know themselves. I mean what's the point, it's not a super sercret STEALTH car!

Bill17601

Just like when C6 came out with the four speed auto. As a buyer it is not a deal breaker for me. I have a seven speed auto in my G37. Really is seamless either way.

JoesC5

Notice that it also has the dip stick in the oil pan.

The truth is that there will be two versions of the LT1. One with the dry sump and one with the wet sump. You are looking at a photo of the wet sump.

Don't get so excited...

C7envy

What is the difference between wet and dry sump? Excuse my ignorance. What are the pros and cons of both?

jackhall99

The GM honchos would not even discuss future plans this past Sat. during the private discussions before the Chicago Auto Show began. They did say the A6 was modified to handle the increased torque of the C7. End of discussion!

Joe aka - KODAK

I'm not

JoesC5

You mean the same modifications they made to the A6 so it could handle the increased torque of the LS7 used in the Z06? Oh, wait. they didn't, did they? GM's marketing sure likes to compare the LT1's torque to the LS7's, so why didn't they just make those modifications, to make all those people happy that wanted an auto Z06 and an auto 427 Convertible.

Or maybe they just increase the TM.

Michael A

No apology needed.

Wet sump just refers to the supply of engine oil residing in the oil pan, which is the configuration for most cars.

A dry sump engine has a small oil pan, with pumps sucking the oil out of the pan, and into a oil tank. In situations with high lateral forces, i.e. making hard turns, the dry sump engine can keep a steady supply of oil going to the oil pump and bearings, because it can draw oil from the bottom of a tall, narrow tank, rather than from a wide flat oil pan with oil sloshing from side to side.

Michael

ZL-1

In one of the technical seminars a while ago Tadge said that in addition to the 427's major torque, its fuel cutoff is 7100 rpm. That was the big issue; 6500-6600 rpm is the realistic limit for that heavy torque converter full of oil to be spun to. He reminded us that GM has to warranty that trans for 100,000 miles.

VADanno

Exactly why we need a dual clutch automatic for a world class sports car!

Lancer033

with a wet sump all the oil can get pushed to one side and leave the pickup sucking air and destroying the engine. That's not possible with a dry sump

JoesC5

Funny that GM runs a torque converter with a powerglide transmission behind a modified LS7 with a 7500 RPM rev limiter. Of course they don't warrant those COPO Camaro's to 100,000 miles, but high RPMs with an auto transmission, isn't an unsolvable problem.

I mean, GM solved that tricky problem with air being trapped in the passenger compartment, so they should be able to solve the problem with not being able to spin a torque converter to 7,00 RPM.

Hot Rod Todd

I seem to remember it being mentioned in one of the interviews I watched that the dry sump was a something you get with the Z51 option and manual transmission. That would indicate that the base manual transmission car is a wet sump. That would also match the current way you get a dry sump when you step up to the GrandSport option with manual trans.

Gary '09 C6

^

...which would also suggest GM is thinking buyers ordering Z51 w/manual tranny could be
more likely to use the car on the track, where the dry sump oiling system is more helpful...

DDSLT5

News flash: NONE of the engines in the corvette has or ever had a dry sump. These are ALL wet sump motors with a reserve oil supply held remotely for high 'g' cornering loads. The oil is dumped into the engine during extended high 'g' corners, and is then returned to the remote tank once normal lateral 'g' loads return. Remember when LS7s were getting destroyed at the track, then suddenly the LS9 came onto the scene with a bigger tank, and amazingly the LS7 got the upgrade as well????

Guess what! The reserve tank wasn't big enough to store enough oil for longer high 'g' load corners! So they put in a bigger tank! Still not a dry sump. A cheap excuse is all it is.

A true dry sump scavenges off all the oil from the bottom of the crankshaft and is returned to the remote reservoir so that it can be supplied under pressure to the critical areas of the motor. No matter what the 'g' load the car is experiencing, all critical areas receive the same volume and pressure of oil at all times. THIS is what a dry delivers and why it is used on RACE CARS! It is typically driven by a cogged belt off of the crankshaft pulley, and it sucks a certain number of horsepower from the engine itself.

Very expensive super exotics have them - McLaren F1, Porsche Carrera GT, Ferrari ENZO, Ferrari F40, Porsche 959, Porsche GT3/GT2 to name a few. No compromises for these cars.

An acceptable alternative is the use of a wet sump and the presence of solenoids on either side of the block to suck the oil from the opposite side of the block from the high 'g' load and allow the oil pump to receive its oil from that side where the oil is being forced up the side of the block - as is the case on my E39 M5 (S62 powerplant).


The corvette use of the term 'dry sump' is both misleading and embarrassing.

SCM_Crash

Not going to happen for a long time. Give it up...