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

[radz28]

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

[ShnOmac]

I know nothing about what it takes to bring a new engine to the market.... Since the new engine will be based off the LS3 block will there be less testing that needs to be done?

"next year's engine will be back to being based on the production LS3 block as opposed to being based on a racing block, another example of bringing the cars closer together"

[DGthe3]

This is a race engine, nothing more nothing less. It is the equivalent of the E85 6.0L LS7 that Corvette Racing used this year. Yes, I said 6.0L LS7 not 7.0L LS7.

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

The LS3 and L99 are going away in a few years, replaced with relatives to this engine. This new generation of engines will be more powerful and more efficient than the current ones. Why downsize? Because it doesn't make sense to offer 500 hp mainstream cars and trucks when you have the new CAFE standards to worry about.

[UCI CamaroFan]

Originally Posted by radz282003

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

Would it really need to compete with the Shelby? I mean, GM has the corvette for that.

[ShnOmac]

Originally Posted by DGthe3

This is a race engine, nothing more nothing less.

But the race engine is going to be based off of a new production engine from everthing I have read.

[DGthe3]

As is the current E85 6.0L LS7. But no production car has that engine. That is my point.

[ShnOmac]

Originally Posted by DGthe3

As is the current E85 6.0L LS7. But no production car has that engine. That is my point.

I guess we will just have to wait and see

"the block we use now is a production-based block but it doesn't come off the assembly line. Without getting into the minutia, there are some casting issues that caused us to have a huge amount of waste, we were getting about one block out of 25 to ensure the quality we had to have. We used the same tools, the same dies, the same materials, but those all had to be hand cast because the tolerances had to be so much closer. That was an expensive way to do business. The 5.5-liter, by virtue of the brand-new architecture GM has developed, we'll be able to pull blocks right off the assembly line. That becomes a great cost savings for the team."

[CamaroSpike23]

Originally Posted by ShnOmac

I know nothing about what it takes to bring a new engine to the market.... Since the new engine will be based off the LS3 block will there be less testing that needs to be done?

"next year's engine will be back to being based on the production LS3 block as opposed to being based on a racing block, another example of bringing the cars closer together"

its not testing the engine itself. they have to test and certify every powertrain combo that goes into a vehicle. so for the camaro currently, they had to test the LS3 and M6, the L99 and A6, and the LLT with both the M6 and A6. if they offered a different gear option from the get go, they would have had to test that too. same as if they offered another combo of LS3 and A6. money money money....

[Mr Twisty]

Originally Posted by ShnOmac

I guess we will just have to wait and see

"the block we use now is a production-based block but it doesn't come off the assembly line. Without getting into the minutia, there are some casting issues that caused us to have a huge amount of waste, we were getting about one block out of 25 to ensure the quality we had to have. We used the same tools, the same dies, the same materials, but those all had to be hand cast because the tolerances had to be so much closer. That was an expensive way to do business. The 5.5-liter, by virtue of the brand-new architecture GM has developed, we'll be able to pull blocks right off the assembly line. That becomes a great cost savings for the team."

I'll be surprised if this "brand-new architecture" isn't a D.I. V8.

[ShnOmac]

Originally Posted by CamaroSpike23

its not testing the engine itself. they have to test and certify every powertrain combo that goes into a vehicle. so for the camaro currently, they had to test the LS3 and M6, the L99 and A6, and the LLT with both the M6 and A6. if they offered a different gear option from the get go, they would have had to test that too. same as if they offered another combo of LS3 and A6. money money money....

Got ya! Thanks spike

[chevy454]

Originally Posted by cliffy

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

Rod bolts lacked a lot...once decent replacements came around in the aftermarket the survival rate took a huge jump...especially on the bbc stuff. Big blocks ended up going to a 7/16 bolt (ZL1 and all 70+ bbcs) to get them to survive...but with today's good bolts, a 3/8 bolt is pretty darn good. We've had a '69 Z/28 as well as a '67 SS 350 w/ the 350/295hp, and honestly, I think the 350 car was the better driving car...if it wasn't for the SCCA's cubic inch mandate, the 302 never would've happened.

The 325hp 396 wasn't a performance engine by any means, the 350hp 396 was a definite improvement (different cam, pistons), but the L78 375hp engine was the killer of the 396s. We owned a trio of L78 cars in Cortez Silver a few years ago (Camaro, Chevelle, and Nova) and they would all fly...not like our 427 cars, but still lethal.

[boxmonkeyracing]

all I got to say about this is. . .DI is coming no matter what. what car it gets placed in is still undetermined. as we have official word of the SS it could seriously be put in the SS in a couple years. but you never know the unicorn may debut with this engine.

[DGthe3]

Originally Posted by boxmonkeyracing

all I got to say about this is. . .DI is coming no matter what. what car it gets placed in first is still undetermined. as we have official word of the SS it could seriously be put in the SS in a couple years. but you never know the unicorn may debut with this engine.

forgot a word

[radz28]

Originally Posted by UCI CamaroFan

Would it really need to compete with the Shelby? I mean, GM has the corvette for that.

IMO - yes. In order for Camaro to maintain the market it's earned over the last several months, and stay completely competitive with the Mustang, it should be at least on par with all the Pony's models. LT/LS = base Mustang; SS = Mustang GT; Z28 = GT500.

I'm sorry, but the GT500 is not in the same league as Corvette, regardless of price. IMHO, to suggest that is simply inaccurate...

Respectfully...

Originally Posted by boxmonkeyracing

all I got to say about this is. . .DI is coming no matter what. what car it gets placed in is still undetermined. as we have official word of the SS it could seriously be put in the SS in a couple years. but you never know the unicorn may debut with this engine.