[Z06] c5z vs M6?
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
I don't want to sound like a jerk. Maybe I'm not on the same page? I'll agree with you if you are talking about stingers and a full exhaust mod including headers, high flow cats, etc... Just trying to explain that The back pressure may be less with the stingers or other after market cat back systems.. I'll agree on that .. The restrictive part of the exhaust is in the stock exhaust manifolds and the catalytic converters.. Try this experiment.. Blow air through a cocktail straw or coffee stir straw. Then try taping a large diameter straw onto the thin cocktail straw. Or try taping a garden hose onto the cocktail straw for that matter.. Now then.. Blow real hard on the thin cocktail straw and see how much the flow improves with the garden hose taped around the end of the thin cocktail straw.. The cocktail straw represents the stock exhaust manifolds and restrictive cats.. The garden hose represents the cat back system.. The catbacks could be 6 inches in diameter and it would not make a hill of beans because of the restricted flow up the line .. This is why folks go to a full exhaust ie.. Longtube headers, high flow cats or no cats at all.. I watched a dyno pull on a 2007 Z06 with the electric cutouts at Corvettes of Dallas. The results were identical weather they were closed or wide open..
Last edited by David426; Aug 3, 2010 at 04:25 AM.
Thread Starter
Racer
Joined: Sep 2009
Posts: 414
Likes: 1
From: CT
Not really how many gears but more the over head cams and 4 valves per cylinder relying on high rpm's and that their peak twist action is made for 7750 rpms. So once you get the boat moving it is more about high end horsepower rather than low end torque...My brother is a BMW mechanic and has taken me for a ride in the M5, 335ci, new M3, old M5, it is a different type of horsepower, it more pulls you like a turbo towards the high R's but doesn't kick you in the pants when you stuff it in low R's.
But like anything...you can have a 100% race horse but if the jockey is no good, then you might as well stay in the stable.
But like anything...you can have a 100% race horse but if the jockey is no good, then you might as well stay in the stable.
Burning Brakes
Joined: Mar 2010
Posts: 761
Likes: 2
From: sf bay CA
the ls6 does not fall on its face in 4th, far from it. that's just where these bmws really shine, and once your going this fast the extra weight no longer applies
Burning Brakes
Joined: Mar 2010
Posts: 761
Likes: 2
From: sf bay CA
Oh gotcha, i thought our cars were all mainly top end cars, i am assuming this is in regards to a stock LS6 correct? vs a stock M6 as my original post/question was about, i am assuming as soon as you put in an aftermarket cam especially a larger one, the LS6 will pull like a freight train up top?
Drifting
Joined: Oct 2009
Posts: 1,438
Likes: 4
From: Always in my lane.
Why compare oranges to apples? What if the M6 has mods? Then what?
Car and Driver magazine Road Test
2002 Z06 0-60mph in 4.0 seconds 1/4 mile 12.4@116
2006 M6 0-60mph in 4.1 seconds 1/4 mile 12.4@121
The heavy M6 has 7 gears, which really helps keep it in the sweet spot power range. Stock for stock its a drivers race and after 1/4 mile the M6 walks away
Car and Driver magazine Road Test
2002 Z06 0-60mph in 4.0 seconds 1/4 mile 12.4@116
2006 M6 0-60mph in 4.1 seconds 1/4 mile 12.4@121
The heavy M6 has 7 gears, which really helps keep it in the sweet spot power range. Stock for stock its a drivers race and after 1/4 mile the M6 walks away
Advanced
Joined: Mar 2008
Posts: 89
Likes: 4
I own a modded M6 with longtube headers, no cats, full race exhaust, underdrive pulley, ram air, filters, and dinan stage I software. It's a freaking highway beast, I've walked modded 997 turbos on the highway from a 50 roll. The key is starting in the right RPM in these cars. I lost to a bolt on and weight lessened 06 Z(stock manifolds) from a 40ish roll 3 times. Only one race was close and we shut off around 140 when I was making a comeback because I started in a good rpm range. If you start too high in 2nd you have to shift early in the race or you get too low in the rpm in 3rd to get a good start. The car revs to 8400 rpm and really don't get into the power until you are close to 6k. It's an amazing car and the only reasonable cars I would consider to replace it would be a C6z or 911 turbo.
I troll in the forum bc I've been trying to get my hands on a C5z as a DD.
I troll in the forum bc I've been trying to get my hands on a C5z as a DD.
