GEN V 5.5 Liter V-8 in Z/28?

[wildpaws]

Originally Posted by 2cnd chance

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.
Clyde

[2SSRS@Gen5diy]

Nice find.

[camaro5]

I think the Corvette C7 in 2012 will utilize direct injection GenV engines, and this could coincide with the Z28 launch.

[rayhawk]

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.

[SSmoked]

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.

[chevy454]

Originally Posted by SSOOCH

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.

Originally Posted by 2cnd chance

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...

[cliffy]

Originally Posted by chevy454

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

[JBsC6]

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

[radz28]

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

[CamaroSpike23]

Originally Posted by SSOOCH

I like the idea. Just like 1969. The SS will have the bigger motor. Not necessarily faster though.

shhhh.....

Originally Posted by radz282003

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.

[Mr Twisty]

Originally Posted by JBsC6

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.

[radz28]

I'd like to keep with more traditional cars, but I always come back to Z28 needing a good amount more power in order to make a performance difference above SS. Shoot, another only 25 some-odd-horse and maybe a couple hundred pounds off an SS just won't do it for me. It still won't compete with a GT500 (again, I always come back to this in my mind), so I just keep falling back on LSA. Sheesh - this is frustrating to wait to get information on, but kinda' fun at the same time

[ShnOmac]

Here is a different twist.... What if the new 5.5 Liter is not going to go into the Z/28 but going into the SS to one up the new Mustang.... hmmmmm

[CamaroSpike23]

Originally Posted by MisterCamaro69

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.

what about more hp/tq than the motors they replace?

Originally Posted by ShnOmac

Here is a different twist.... What if the new 5.5 Liter is not going to go into the Z/28 but go into the SS to one up the new Mustang.... hmmmmm

dont see that happening till a Gen 6 comes out. mainly because of the trials that they have to do before sending the car into production.

instead of testing two new powertrain options for a Z28 (one for auto, one for manual), they would have to test 4 (2 for the SS and 2 for the Z). it gets expensive and I dont see GM doing that right now.