Absolutely love the interior except for one item, the middle plastic area of the steering wheel. Looks rather cheap to me. The rest looks incredible though.

Dan

 

They should have stuck those seats in the ZR1.

 

 

If only I had money....

 

The GM press release was just pulled, I was on the site clicked off then a few mins. later went back and all info is gone.

 

Wow , this car is gonna be sick and they even added all the >>right<< details to the interior .

 

550 hp!! I knew it was possible, but to see it in writing...

 

If GM puts this engine in a Camaro and sells it anywhere in the $30,000 ball park, I'd take it with crates for seats.

 

Hmmm, I almost thought it was a typo when I first read that. Hypereutectic pistons are what the LS7 has... and we all know that its probably a wise choice not to go the power adder route with those pistons.

I wonder how much more the engine is capable of handling, STOCK?

 

I seriously hope that the peak torque rpm is a typo, otherwise the curve better be a flat as Kate Moss.

 

Where in the heck are you getting those speeds?

According to my calculations (which are approximate because I had to guess at the tire size and redline), first gear will be good to about 30mph in the automatic version and about 50mph with the manual trans.

Regarding it being useless at WOT... did you not read about Performance Traction Management?

 

using a gear ratio calculator and a 6500 rpm red line:
1st is good for 35
2nd 59 (boo, 2 gear changes for 0-60)
3rd 91
4th 121 (should trap really close to the top of 4th gear)
5th 164
6th 208

and with the manual:
1st 52
2nd 78
3rd 107
4th 139
5th 174
6th 221

 

What tire size did you use?

 

So the engine lineup is 260hp, 304hp and 550hp? Seems like a place in the middle needs to be filled.

I have been thinking for awhile that GM needs a HO 5.3L. Something in the 360-375 range with DI and DOD. For use in Camaro, G8, CTS, H3A, and C6. I think the vette could knock down 30 mpg in a base model with a engine like this. I dont know that the engine size and DOD would work well with the heavier vehicles unless some favorful gears are used. Which could make for better acceleration numbers.

The caddy is sweet. I bet the piston choice came to NVH. Nobody pays big cash for a car with piston slap. Overall when you think about it, its a bigger motor that the than the 5.7 that most of us run, with excellent heads, and an intercooler and an effficient 4 lobe blower. With heads that good and a cooled charge and lots of cubes cylinder pressures are going not going to be that bad. Add in piston squirters and not all cast pistons are the same, I bet the metal composition is a little better that the cast piston that are running in everthing else.

 

Tires:
255/40R19 Michelin PS2; summer Z-rated (front)
285/35R19 Michelin PS2; summer Z-rated (rear)