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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 02-07-2004, 11:31 AM   #11
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dbtk2, why dont you get a performance cam for the GTP?
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Old 02-07-2004, 07:43 PM   #12
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ok but where are all of the mods like this for a series 1 motor and an m60
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Old 02-08-2004, 11:19 PM   #13
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Quote:
Originally Posted by macho_mike21
dbtk2, why dont you get a performance cam for the GTP?
Because it is currently the fastest GTP (or any w-body for that matter) with the stock cam. (and not only that, but it still has stock heads also, and all internals are stock too besides the valvesprings, pushrods, and rocker arms) Not only that but my dad wants to hit 11'* on the stock cam, and he doesn't want to go through a cam install, and obviously, as we have already proven, a cam swap isn't necessary to get power out of the L67. The stock cam is enough to do what we want it to do, so why upgrade. Not only that, but with a cam to see a power gain you have to rev the engine much higher (500-1000rpms higher) which is never good for an engine, and it is harder on all the valvetrain parts to have that bigger cam. Plus a bigger cam makes the engine much more difficult to tune and without proper tuning with the cam sometimes people actually lose power, and makes the car a lot less streetable, not to mention not as much of a sleeper. With the stock cam the engine purrs at idle, with an aftermarket cam it would sound really lopey which makes it sound better yeah, but also makes it quite obvious the engine was messed with. And why tear into an engine with only 22,000 miles on it???

Basically, the car has a lot more left in it with the stock cam, and we are going to see just how much that alot is. Its still running stock timing for crying out loud. And the car isn't being built to be a race car, its being built for an everyday street car, which is why the interior and exterior of the car have been left completely stock (I have pictures if you wanna see 'em). We didn't even add any gauges or anything to the inside. My dad has said that once he hits 11'* he'* done at the track (mainly because they will kick him out for no roll bar) and he'* gonna add the heavy brakes and heavier suspension parts he wants to add that will slow the car down to make the car nicer for driving on the street.


And back to the original topic, I just want to add one thing. The day ZZP put this product on their site, INTENSE dropped the price of the MP112 Conversion Kit to $1750. That makes that a much more affordable option now.

Shawn
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Old 02-08-2004, 11:30 PM   #14
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Quote:
Originally Posted by dbtk2

And back to the original topic, I just want to add one thing. The day ZZP put this product on their site, INTENSE dropped the price of the MP112 Conversion Kit to $1750. That makes that a much more affordable option now.

Shawn
Now THAT'* news! That includes the IC too doesn't it?
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Old 02-09-2004, 07:49 AM   #15
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Quote:
Originally Posted by BonneMeMN
Now THAT'* news! That includes the IC too doesn't it?
No, it does not include the Intercooler, (unfortunately) but the kit requires the intercooler for it to work. So all said and done, you will have spend close to 3 grand on it. But its still cheaper then before, and thats not much for people that are really serious about going fast.

Shawn
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Old 02-09-2004, 08:59 AM   #16
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Quote:
Originally Posted by dbtk2
Quote:
Originally Posted by macho_mike21
dbtk2, why dont you get a performance cam for the GTP?
Because it is currently the fastest GTP (or any w-body for that matter) with the stock cam. (and not only that, but it still has stock heads also, and all internals are stock too besides the valvesprings, pushrods, and rocker arms) Not only that but my dad wants to hit 11'* on the stock cam, and he doesn't want to go through a cam install, and obviously, as we have already proven, a cam swap isn't necessary to get power out of the L67. The stock cam is enough to do what we want it to do, so why upgrade. Not only that, but with a cam to see a power gain you have to rev the engine much higher (500-1000rpms higher) which is never good for an engine, and it is harder on all the valvetrain parts to have that bigger cam. Plus a bigger cam makes the engine much more difficult to tune and without proper tuning with the cam sometimes people actually lose power, and makes the car a lot less streetable, not to mention not as much of a sleeper. With the stock cam the engine purrs at idle, with an aftermarket cam it would sound really lopey which makes it sound better yeah, but also makes it quite obvious the engine was messed with. And why tear into an engine with only 22,000 miles on it???

Basically, the car has a lot more left in it with the stock cam, and we are going to see just how much that alot is. Its still running stock timing for crying out loud. And the car isn't being built to be a race car, its being built for an everyday street car, which is why the interior and exterior of the car have been left completely stock (I have pictures if you wanna see 'em). We didn't even add any gauges or anything to the inside. My dad has said that once he hits 11'* he'* done at the track (mainly because they will kick him out for no roll bar) and he'* gonna add the heavy brakes and heavier suspension parts he wants to add that will slow the car down to make the car nicer for driving on the street.


And back to the original topic, I just want to add one thing. The day ZZP put this product on their site, INTENSE dropped the price of the MP112 Conversion Kit to $1750. That makes that a much more affordable option now.

Shawn

Shawn what about a mild cam
or put it this way has your dad ever thought about it?
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Old 02-09-2004, 04:34 PM   #17
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Whats the point of a "mild cam." If he ever does decide to put in a cam, it will be a VERY big cam (either the XP or XPZ cam), but he isn't going to. The car kind of has a mild cam already with the 1.9 rockers. A cam swap costs around $1000, and a mild cam still makes the car idle rougher and sound lopey. And no matter what cam you put in, you don't get the gain unless you get the computer programming to up the shifts, which upping the shifts is bad on the engine, and so on and so fourth. And with a mild cam swap we can't say it still has the stock cam anymore, and it won't make much more power, so whats the point.

Like I said, the car can make the amount of power we need it to with the stock cam, so why put in a big one?

Shawn
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Old 02-09-2004, 04:52 PM   #18
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Quote:
Originally Posted by dbtk2
Whats the point of a "mild cam." If he ever does decide to put in a cam, it will be a VERY big cam (either the XP or XPZ cam), but he isn't going to. The car kind of has a mild cam already with the 1.9 rockers.
The 1.9:1 rockers are far harder on the valvetrain than most cams available for the L67.

Cheers,
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Old 02-09-2004, 09:38 PM   #19
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Quote:
Originally Posted by Foghorn
Quote:
Originally Posted by dbtk2
Whats the point of a "mild cam." If he ever does decide to put in a cam, it will be a VERY big cam (either the XP or XPZ cam), but he isn't going to. The car kind of has a mild cam already with the 1.9 rockers.
The 1.9:1 rockers are far harder on the valvetrain than most cams available for the L67.

Cheers,
Well, yes and no. A larger cam is still going to have more lift, so the valves are going to have to open further, but yeah, the geometry will be different with the stock rockers so it will be easier to open if the cam had the same lift as rockers. But with a cam like the XP cam (the smallest cam he would even consider) it has .53X lift, which is .4" more lift than with the rockers, and thats a considerable difference. Thats going to be harder on the valvetrain itself, not to mention that the XP cam requires you run 130lb. springs, which is going to be much harder on the valvetrain to have to push open the valve with those heavy springs, and it will be harder on the valve seat because the valve will be slamming closed harder. And as I have already said, the car has to rev at least 500rpms higher to get the extra power with the cam, and that alone is much harder on the valvetrain. And now this is starting to become a cam debate, and I don't really want that, this thread is about a blower.

So all in all, he doesn't want an aftermarket cam. What he has is working fine for him. Thats that.

No lets try to get back to the original topic and stay there this time.

Shawn
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Old 02-09-2004, 10:41 PM   #20
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I think you've answerred your own question Shawn - without increasing the engines capacity to flow more, you're likely to get a sh*tload of boost stacking considering the hybrid M112 can flow almost 700CFM at max speed of 14,000rpm.

Cheers,
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