The terms "small block" and "big block", in Chevrolet (and hence GM) history refer simply to the exterior dimensions of the respective blocks, NOT the engine displacement. The LS7 is a continuation of the enduring Chevrolet small block design, now taken to new heights of power and refinement.

 

BTW, from what I've read on several GM sites, the actual power output of the new LS7 is about 525hp - so why does GM market is as 500? Who knows, except that GM has also historically underated the engine outputs in their more sporting offerings.

 

you are right, I love EVO's but I have an appreciation for anything this fast

 

Never figured out why so many people around here look down on the Z06 (or Vettes in general)... Great power, great handling, decent looking - just like the Evo. So what if it uses 3 times the displacement? The LS1/LS7 are actually remarkably light for their power.

 

I was disappointed in the execution of the front brake outlet and rear inlet. Otherwise I think Chevy did a great job.

 

Awesome machines. Even the old ones.

 

Insurance. Also, they don't ever want to be in a position that mazda was in with the RX8 and have to decrease power rating later.

Other companies underrate power on their "performance cars" too. The 2003 mustang cobra was estimated to have 425 hp or so, not 390.

 

Agreed.

 

Definitely. It's always better to rate towards the bottom of what your sample produces, rather than the top (which Mazda has/had a tendancy to do). With a Cobra, 390 was the least you'd end up with, and most of them had more.

 

nice # on the c6..only thing i'm scared of to race are the v8's.

 

The front fenders are Carbon Fiber, GM had to develop a special mount to hold them while they were painted or the spray guns would blow them away. This is according to MT of course... I chuckled at it though.

 

GM has just recently released it's performance figures for the new Z06, and they look very VERY good!

0-60: 3.8 seconds
top speed 190mph
1/4 mile: 11.7 at 127mph <<<<with a full warranty and on production issue street radials (not even DR's!)...gotta respect those kinda numbers!

 

Actually you can make larger than 427 small blocks. the small block 400 can be bored and stroked to about 481 (now that is the upper limit) and a racing setup only, so i would say that the 427 is a mild build for a small block

I just happen to be in the middle of my small block 400 right now for my chevy hehe.

small excerpt from car and driver:

Compared with the LS2-the base C6 engine-the LS7 has a new block with a bore of 4.13 inches and a stroke of 4.00 inches (versus 4.00-by-3.62 inches). To accommodate the larger holes with the standard 4.4-inch bore spacing, Chevy engineers switched from the LS2's cast-in-iron liners to thinner pressed-in liners.

Within the LS7 block, you'll find a forged-steel crankshaft, forged-steel main-bearing caps, titanium connecting rods, and forged pistons. A dry-sump oiling system with an eight-quart reservoir ensures proper lubrication of this long-stroke engine at its 7000-rpm redline


SWEEETTT!!!!

 

8 Quarts? Expensive oil change!

 

i read some where that 1/4 stock is in the high to mid 11s and the price for it is around 75k or so. damn right scary. put a twin turbo in that thing and just say bye bye to the viper.