Small displacement turbocharged corvette
#21
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I dont like the idea of it going into a vette. Put it in a camaro but not a vette.
And would this still be concidered a gm powerplant or is the motor imported and then the kentucky plant modifieing the car to fit?
And would this still be concidered a gm powerplant or is the motor imported and then the kentucky plant modifieing the car to fit?
#22
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I like the idea, especially since they will keep the other engine options. I'd be interested in seeing how the numbers and torque band stack up as well as if they are selling this motor with forged internals. This could be quite a fun car if built right.
And people are always reluctant to change, sometimes it can be good though.
And people are always reluctant to change, sometimes it can be good though.
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with turbo technology on the rise with the variable vane this will be pretty sweet to drive , it still has a v8 which is awesome i just know high revving engines are usually short stroke large bore.
the mileage and broad powerband will be awesome , it will sttract more customers as mentioned , its a smart business move for gm without a doubt and keeping the other big cube v8 an option is even better.
this will make current z06's and 2010 cts-v's come down in price , daddy needs a new daily.
the mileage and broad powerband will be awesome , it will sttract more customers as mentioned , its a smart business move for gm without a doubt and keeping the other big cube v8 an option is even better.
this will make current z06's and 2010 cts-v's come down in price , daddy needs a new daily.
#26
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The mystery small block V8 for the Corvette....
GM builds a 1.6L turbo ecotec for use in the Opel Astra. I believe it comes with a 180 flywheel hp rating, pretty sure that is with a relatively low MAP pressure. If that's the case, and the way the article is talking about being just over 3L, I think we could be looking at a 3.2L V8 with the 1.6L geometry of 3.11" bore, 3.21" stroke, I'd bet these see 8,500 -9,000 rpm pretty easily.
Seeing what GM has done with a hot tune of the 2.0 LNF up to 340 lbft, and the 1.6 turbo coming in stock at 170 lbft, I'm betting that 30.7% increase /Liter could be applicable to the 3.2L V8. Hopefully we'll be seeing something with ~445 lbft and 470 hp (flywheel of course). Couple that with heads that have the capability of dual VVT like the Ecotec does (DOHC I know; if keeping the push-rods why not cam in cam?) and add the capability of AFM cylinder deactivation, this thing will be one high-tech and highly capable purpose built engine.
Being in a lighter car such as the Corvette should afford the AFM some purpose, as well as being able to hold 4 cylinder mode and modulate part throttle MAP closer to 101 kpa, which would up efficiencies by getting rid of some of the pumping losses at cruise. As Chase said above me, a VGT turbo housing would help tremendously with response. Heck, for that matter, make it a VGT + Twin Scroll, and set it up like BMW's 4.4L, so that the exhaust pulses are spaced exactly apart from one another.
I'm down if it's something like what I described, and I still get to shift the transmission. Only, it may take a couple years for me to buy one used as funds would permit. On second thought, I could go '07 ZO6 to tide me over....
#28
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I don't buy it. I'll believe it when I see it. Honestly, dohc was never a fuel mileage feature, and pushrod late-model Vettes (aside from the ZR1) do quite well with sipping fuel. I can see direct injection and more variable cam phasing stuff applied along with the DOD, but I really don't see a high-rpm 3.x H8. Rpm kills fuel mileage; if you have to rev to the moon when merging on the freeway I just see that going well for the brand. I understand that it will recover some torque from the FI, but still, I don't see it happening when a DOD VVT DI 5.5 OHV should be able to make 440hp and get 35mpg.
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If it helps cafe standards to make a few vettes with a small turbo'd v8 so be it, they said that large cube V8's will still be an option. GM has to make "X amount" of cars that make a certian MPG, in order to be able to build "big" V8 cars. If they can do it, yet still make them perform well, and probably handle better then the previous model I am all for it. Corvette pretty much showed the world it can dominate the high end super car market with ZR1 that had 1/3 the price tag of the pasta burners. Now its time to make mid engine screamer and finish cleaning house!
Last edited by MPFD; 06-18-2011 at 03:05 PM.