• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

My new Z06 is at my house

Page 4 - Seeking answers? Join the AnandTech community: where nearly half-a-million members share solutions and discuss the latest tech.
Ferzerp said:
Just for you. A badge!

jRCgyQm.jpg
Click to expand...

That's the part I'd be seeing most. :whiste:
 
After 350 miles, the wheels are still shiny silver! MMMMM no brake dust.

I did have to rinse off the dirt today. It got driven a lot in the wet Friday and Saturday. The cup tires handled a wet road better than I expected. I won't drive in any standing water though. That would not work.
 
I put 9,500 miles on the '07 C6 I had before I sold it in June of this year. Received 67% of what I originally bought it for in June of '07. Not bad for a 7 year old car. Averaged 1,350 miles per year. I'd like to get a C7. Just don't have the same desire for cars as I once did. That may change.
 
Headers/exhaust, blower cam, port heads w/ supporting valvetrain, smaller pulley, CAI, followed by a tune. Easy stuff to do. Looks like there is a lot that can be eeked out of it. I'd have fun doing all that and seeing what can be gained.
 
Yeah, I've seen that. It is interesting to me that the HP is flat from about 5200 to redline stock. I don't place much if any faith in the actual numbers that dynos spit out, but usually the torque and HP curves are at least somewhat accurate. I wonder why they tuned it that way.
 
Ferzerp said:
Yeah, I've seen that. It is interesting to me that the HP is flat from about 5200 to redline stock. I don't place much if any faith in the actual numbers that dynos spit out, but usually the torque and HP curves are at least somewhat accurate. I wonder why they tuned it that way.
Click to expand...

That's exactly how the LSA was in my CTS-V. It's the combination of the S/C and OHV not being able to force enough air into the engine. Don't know if that's common across other engines, but pretty typical of what LS engine dynos look like.
 
The LT4 in the Z06 runs at a relatively high 10.0:1 compression ratio for a FI engine. In comparison, the LS9 in the ZR1 has a 9.1:1 compression ratio. Using aftermarket heads, or simply thicker head gaskets on the stock heads will increase the chamber volume and reduce the ratio. The gains from a smaller SC pulley would be greater.
 
AdamK47 said:
The LT4 in the Z06 runs at a relatively high 10.0:1 compression ratio for a FI engine. In comparison, the LS9 in the ZR1 has a 9.1:1 compression ratio. Using aftermarket heads, or simply thicker head gaskets on the stock heads will increase the chamber volume and reduce the ratio. The gains from a smaller SC pulley would be greater.
Click to expand...

The vengeance folks have stated that the stock pulley is already rather small, so physically there isn't much room to change it. In their testing they only went marginally smaller. I guess you could overdrive the belt if you really wanted to.

I'm not big on adding more power than it already has though. I tend to leave my stuff stock, and then upgrade before the warranty runs out, only having cars under warranty.
 
I just read that the SC on the LT4 is 1.7L and not 1.9L or 2.3L, so it's probably not worth messing with the compression ratio. I'm sure we'll see some owners upgrading to a larger unit though.
 
I was referring to the SC being nearly maxed. There's plenty of other things that can be done to the engine though.
 
the upper pulley is the easy one to change... wait until someone comes out with a larger lower pulley for the crank (similar how they did w/ the terminator series of mustangs)

then they will really be able to push the stock blower
 
There are good reasons for the small blower. Lighter, spins faster, higher compression for DI, and better response.
 
Elganja said:
the upper pulley is the easy one to change... wait until someone comes out with a larger lower pulley for the crank (similar how they did w/ the terminator series of mustangs)

then they will really be able to push the stock blower
Click to expand...

Vengeance is already looking into a lower pulley/balancer upgrade. I actually went that route on my CTS-V and skipped the upper. Was able to go with a 9.5" pulley or 30% (I believe) and was above 15 psi.
 
KentState said:
Vengeance is already looking into a lower pulley/balancer upgrade. I actually went that route on my CTS-V and skipped the upper. Was able to go with a 9.5" pulley or 30% (I believe) and was above 15 psi.
Click to expand...


I've always wondered if there are ill effects from overdriving the AC compressor, alternator, and water pump.
 
Ferzerp said:
I've always wondered if there are ill effects from overdriving the AC compressor, alternator, and water pump.
Click to expand...

Looks like the belt for the S/C on the LT4 like the LSA is dedicated. Makes it easy to change the diameter without affecting the other components.

1-lt4-0005.jpg
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top