What is the Northstar...
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northstar is over head cams meaning it has 4 cams 2 intake and 2 exhaust that open and close the valves and they are mounted to the cyl head it self were the LS motor is a push rod were it has 1 bigger cam that is in the middle of the motor that pushes lifters up and down and the push rod is on top of that that push's on the rocker arms to open and close the valves
So being a former CTS-V owner (2005) and now a STS-V owner (2006) there is a big difference in the sound of the engine under WOT. The LS has an amazing sound where as the N* sounds more like a wind up car. The performance is there, just not the amazing sound. Will a tune change that at all? Or is it what you get with the N*?
Because a Northstar engine is a multivalve engine(2 intake/2exhaust valves per cylinder), and has SOOO much valve area vs cylinder size, it does not need a "lot of cam" to run strong and thus, may not have quite the sound of a 2 valve V8.
Just my opinion...
So our motor is similar to the BMW/Merc? I listened to a lot of exhaust clips on you tube and they are a lot more Ferrari/porsche sounding... RPI i think is the common exhaust. So would our car sound the same with the same exhaust?
Really?...I remember a road test a long time ago on a Posche 928 and the writer said that it sounded like a Pontiac...in fact, back then, a Pontiac and an Oldsmobile sounded similar compaired to a Chevy for instance. I always attributed to the engines firing order, which is different between a Chevy and a Pontiac, but may have been the same with the Porsche...anyway...I
say really...because one day I stood behind my own V while my wife was taking off, demostarting to me how to take off briskly without burning rubber and my thought to myself was the car sounded like a BMW V8, not a Benz, mind you,'cause they sound like a traditional V8 to me....I thought it (my car)sounded really GOOD...just not loud.
Great idea! Your 2 second punch on your drive by is a tease!! BTW, how is the drone on the borla?
I honestly don't find it a factor. Sure if you have the car at low rpms (like 1600-1800) and are cruising at speed as give just a little gas, you hear some drone in the cabin due to the load. But it doesn't last long as the car's rpms come up, or of course if the driver gives it a larger dose of fuel and causes the xmission to downshift it's not there.
This thread is more about pushrod vs ohc than cts-v vs sts-v.
I have owned both and personally like the sound of a blown motor much more. Once you open up the motor a bit and hear that whistle, there is not much better. Of course, that is opinion. If you want the sound of a stock vette, you gotta go V1.
I have owned both and personally like the sound of a blown motor much more. Once you open up the motor a bit and hear that whistle, there is not much better. Of course, that is opinion. If you want the sound of a stock vette, you gotta go V1.
Because of the much lighter mass of the valve actuating mechanism in an OHC engine, the opening and closing rate of the valves is much faster. The result is that the exhaust sound of an OHC engine is very crisp and almost crackles. The heavy pushrod/rocker arm setup in an OHV V-8 results in much slower valve opening rate and produces a lower pitched booming rumble.
This is the sound of the engine in God's car. http://www.billzilla.org/BRM-pushstart.mp3 This is a 1.5L(90 cu.in.) V-16 that produced about 600Hp.
This is the sound of the engine in God's car. http://www.billzilla.org/BRM-pushstart.mp3 This is a 1.5L(90 cu.in.) V-16 that produced about 600Hp.
Get some 180* headers made.
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