http://69.57.130.234/rfvideos/highwa...o_vs_C6Z06.wmv

 

NOOOOOOOOOOO!!!!, damn i really wanted the Gallardo to win that race, i love those cars. i love the sound of them revving high. og well can't win 'em all i guess

 

we still havent seen anything from those damn Vettes either. just wait till they crack the tuning and can start getting some real power out of them. I hate it that i am so impressed with those Z06s.[:@]

 

I actually have no problem with liking the Z06. Its amazing how a car can stomp all over cars that are twice as expensive. Chevy really hit this one out of the park.

 

i hate it because its still an in-block cam pushrod v8. why the hell couldnt Chevy come out with a DOHC 32 valve V8 with an 8000+ rpm redline, like a proper sports car? it would have made far more than 505hp. but its still a bad *** car. the chassis is near perfect.

 

Nothing wrong with the pushrod in block cam design. Most companies moved away from it to early while GM is still with it and perfecting it. The LS series V8(LS1, LS2, LS6, LS7) are said by many many people through-out the industry to be bar-none the best pushrod engines ever produced. While other companies like ford have moved on to modular engine design's GM is making more power N/A than any other company ever has with a V8 on a mass-produced level.

But while we are on the subject GM also has DOHC 32 valve engines and they sit in Cadillacs. While the CTS-V has a LS2 in it now next year it will not anymore. With the introduction of the STS-V comes a brand new engine. At 4.4 liters and 12psi from a eaton blower it makes 440hp stock. That is 100hp/liter in other words what alot of import fans like to rag on V8's over. While making that power it is still carrying the "World Motor" affiliation meaning the engine is legal for sale, production, and operation everywhere in the world in other words it is ok to run on pump gas, passing smog test, and getting good fuel economy

 

Maybe GM went with a pushrod motor because it is cheaper to build. I know that MB has a similar V8 that they use in the SL55 AMG. Its a DOHC engine that makes less than 500HP. Another thing is that i've read that the pushrod engines are a lot cheaper to produce. A big part of the greatness of the Z06 is that it is only 65k and it as good as or better than cars that are twice its price.

 

one of the big advantages of an in-block cam is the overall size of the motor. when you are working with a 7 Liter engine, overall size does get pretty important. But MD, im going to have to disagree, theres Plenty wrong with a pushrod design. now that doesnt mean that they cant be good, just that there are a lot of drawbacks. i mean the LS7 is named that because its the first American production pushrod motor to come with a redline over 7000. huh? a SOHC VTEC has a higher redline. and the only way they could lighten the valvetrain enough to do that, is most of it is Titanium. now that had to have brought the cost of the pushrod motors up a lot closer to the cost of an OHC engine. I mean, this isnt your Daddys 350, this is about as high performance as a pushrod motor can get. And MB wasnt looking for a 500hp motor. look at Ferrari motor if you want to see what a DOHC V8 can do. 3.6l 400hp. and thats not even the top end ones. and thats not even an ultra-trick motor. if GM put as much thought into an OHC motor as they did that LS7, theres no reason they couldnt have a 7L pushing well over 600hp.

 

I have no doubt that the pushrod V8 has it's draw backs but the ability to rev out is not one of them. My first car was a 84 Olds Cut Supreem that came stock with a 305ci small block. Well the 305 was tired to say the least when I bought it so I de-stroked it using a 283 small block crank and had a set of late 80 GTA heads that were p & p, shaved, and had OE replacement springs. It also had a GM performance "hot cam" and it would rev out hard and fast. I had all of about $1200 in the motor and it pulled just north of 350whp and 330wtq. The design of the engine has nothing to do with it reving out well atleast not the platform. On top of that look at the ford engines that are of modular design, they do not rev out anymore than a GM pushrod V8.

Also the LS7 is not named that because of it's ability to rev, it is named that because it is the 7th generation of the gen III small block V8's. It started with the 360hp LS1, then the 400hp LS2 6.0, the 3rd, 4th, and 5th gen III V8's are not labled as so and are placed in trucks with a cast iron 6.0 block, LS6 is the 425hp C5 Z06 engine, and the LS7 being the 7th gen III engine is a 7 liter 500hp c6 Z06 engine.

http://www.hotrod.com/howto/113_0504_block/index.html

Check that out, good read

 

yknow, thats what i figured, but one of my friends who usually knows more about domestics than me mentioned it was about the redline. oh well, it still is a fact that its the first to rev over 7k in stock trim though.