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Old 10-28-2009, 07:52 PM   #1
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GEN V 5.5 Liter V-8 in Z/28?

It seems that there is a new 5.5 Liter V-8 in the works and will be ready for the 2010 AMLS racing series. It appears this new engine is going to be a factory production engine produced at the same plant where the LS9 and LSA are built. I wonder if this could be the engine that will be dropped into our beloved Z/28??


"The 5.5-liter, by virtue of the brand-new architecture GM has developed"
http://www.corvetteracing.com/histor...midohio2.shtml

"A 5.5-liter production-based GM small-block V8 is currently under development"
http://www.seriouswheels.com/cars/20...e-C6-R-GT2.htm

"GT2 Vettes will be running a new 5.5-liter V8 based on the next-generation version of the GM small block."
http://www.supercars.net/cars/4565.html

"5.5-liter V8 engine that will be produced at the GM Performance Powertrain Center which also producers parts for the Corvette ZR1 and Cadillac CTS-V."
http://www.carbuyersnotebook.com/che...vette-c6r-gt2/

Last edited by ShnOmac; 10-28-2009 at 08:17 PM.
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Old 10-28-2009, 07:54 PM   #2
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Why don't you ask Number 3?
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Old 10-28-2009, 08:01 PM   #3
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how much you want to bet the new c7 vette comes out with this engine first. then the z06 gets a slightly different engine and the z28 with get this one.
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Old 10-28-2009, 08:10 PM   #4
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how much you want to bet the new c7 vette comes out with this engine first. then the z06 gets a slightly different engine and the z28 with get this one.

Well the timing seems pretty good.....
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Old 10-28-2009, 08:11 PM   #5
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Why don't you ask Number 3?
You know thats one nut that will never crack.....
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Old 10-28-2009, 08:36 PM   #6
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You know thats one nut that will never crack.....
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Old 10-28-2009, 08:41 PM   #7
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I like the idea. Just like 1969. The SS will have the bigger motor. Not necessarily faster though.
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Old 10-28-2009, 08:41 PM   #8
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I thought it was funny......



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Old 10-28-2009, 08:46 PM   #9
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I thought it was funny......



It was
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Old 10-28-2009, 08:48 PM   #10
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It was
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Old 10-28-2009, 09:06 PM   #11
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Hmmmm where is all the regulars to chime in on this??? lol
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Old 10-28-2009, 09:09 PM   #12
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I like it.

I hope that they get a smaller V8 that can rev up really high and get really good horsepower, but maybe make less torque to be true to the old Z
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Old 10-28-2009, 09:09 PM   #13
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I like it.

I hope that they get a smaller V8 that can rev up really high and get really good horsepower, but maybe make less torque to be true to the old Z
less tq? are you crazy. . .?
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Old 10-28-2009, 09:41 PM   #14
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I like it.

I hope that they get a smaller V8 that can rev up really high and get really good horsepower, but maybe make less torque to be true to the old Z


the old Z's had very good torque it was just at higher rev's.
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Old 10-28-2009, 09:49 PM   #15
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the old Z's had very good torque it was just at higher rev's.
You got it right, but I think it would be nice to have some low end torque, it got old very quickly always having to keep the revs up to stay in the torque/HP band in my '69 Z/28.
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Old 10-28-2009, 10:00 PM   #16
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Nice find.
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Old 10-28-2009, 11:40 PM   #17
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I think the Corvette C7 in 2012 will utilize direct injection GenV engines, and this could coincide with the Z28 launch.
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Old 10-29-2009, 07:37 AM   #18
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So are they going to have to make a GT3 class once the corvette begins to dominate GT2? I can't wait to see what kind of changes are in store for the Gen V motors. Although I must say with the weight of cars now and the success GM has had with somewhat larger displacement engines, I don't see them going smaller (even if it is DI) for the Camaro and Corvette. I guess we will have to wait and see, but I think a 6.2L DI motor is the future of the Camaro SS.
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Old 10-29-2009, 09:31 AM   #19
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interesting. anybody know the hp/tq limitations to the gt2/3 class that this motor will be in? this would probly give us a rough estimate of what the vette/z28 will get.
i like the idea of a screaming small block v8. make this gen V 5.5L a 450hp/450tq monster and ill be happy. toss into into the Z with beefed up suspension and we have a winner.
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Old 10-29-2009, 09:42 AM   #20
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I like the idea. Just like 1969. The SS will have the bigger motor. Not necessarily faster though.
Umm, sorta...the 302 should take the base SS 396 engine (325hp), and could hang with the small block SS engine (350/300hp) or the 396/350hp, but the 396/375hp would WALK IT.

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the old Z's had very good torque it was just at higher rev's.
There wasn't squat for torque in the 302s...you're talking an oversquare small block using the 283s short crank. IIRC, it was rated at 290hp/290tq, with the torque rating coming waaaay up in the rpm range, like in the 4k range...the 302 made it's name by revving up high, but nothing down low. Actually, the best Z28 engine of that era was the LT1 of 1970...
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Old 10-29-2009, 09:53 AM   #21
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Umm, sorta...the 302 should take the base SS 396 engine (325hp), and could hang with the small block SS engine (350/300hp) or the 396/350hp, but the 396/375hp would WALK IT.


There wasn't squat for torque in the 302s...you're talking an oversquare small block using the 283s short crank. IIRC, it was rated at 290hp/290tq, with the torque rating coming waaaay up in the rpm range, like in the 4k range...the 302 made it's name by revving up high, but nothing down low. Actually, the best Z28 engine of that era was the LT1 of 1970...
The lack of torque and the love of free spinning revs is why most of those beloved motors grenaded, but oh what a motor it was. It was a true factory "hotrod" motor. 396 motors were turds in comparison except the 375 versions
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Old 10-29-2009, 10:03 AM   #22
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Why would we want a 5.5 liter motor when GM could just put direct injection on the LS3 or L99 and we'd get more power, more tq, better emissions and fuel economy..?

I don't see the benefit of a 5.5 liter motor compared to the 6.2

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Old 10-29-2009, 10:24 AM   #23
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Interesting. I don't see GM engineering new engines without DI though, and unless this 5.5 liter comes with it, I don't really see if making it to Camaro. Also, the LSA and LS9 are too new, to me, for them to get rid of already, even if I look forward to 2012. I wouldn't see GM getting rid of those with new replacement engines until after 2015. There are only a couple engines I can recall that GM made in really limited numbers for a year or two and it just doesn't make sense they'd do that now. I could be way off though. As long as the power goes up, and not down, and it retains eight cylinders, I don't care too much
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Old 10-29-2009, 10:45 AM   #24
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Quote:
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I like the idea. Just like 1969. The SS will have the bigger motor. Not necessarily faster though.
shhhh.....


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Interesting. I don't see GM engineering new engines without DI though, and unless this 5.5 liter comes with it, I don't really see if making it to Camaro. Also, the LSA and LS9 are too new, to me, for them to get rid of already, even if I look forward to 2012. I wouldn't see GM getting rid of those with new replacement engines until after 2015. There are only a couple engines I can recall that GM made in really limited numbers for a year or two and it just doesn't make sense they'd do that now. I could be way off though. As long as the power goes up, and not down, and it retains eight cylinders, I don't care too much

well, if it proves viable enough to use for a Z28 opposed to an FI motor to keep with the roots of the Z28. 500-550 n/a p DI 5.5L v8.... I'd take it.

but, I think the LSA is almost a surefire bet for the Z28. mainly because they've already been building the motor for how long now? compared to a 5.5 that hasnt yet made it to full production.
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Old 10-29-2009, 12:03 PM   #25
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Why would we want a 5.5 liter motor when GM could just put direct injection on the LS3 or L99 and we'd get more power, more tq, better emissions and fuel economy..?

I don't see the benefit of a 5.5 liter motor compared to the 6.2

JMO
Wave of the future, smaller, better fuel mileage. I'm expecting a D.I. V8, 335 cubic inch?
I wouldn't be surprised if the new motors have comparable hp/torque numbers to the motors they replace.
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