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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 09-13-2010, 02:18 PM   #1
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Fear VVT No More....Mast Motorsports Stage III Track Package adds up to 125 rwhp!

L99 Guys, FEAR VVT NO MORE! Mast Motorsports Stage III Camaro L99 Track Package p/n 981-203 will get you around 630hp at the flywheel! (With 1" 7/8 headers and CAI, sold seperatly) This package includes the following:

L99 VVT cam for automatic transmission Camaros
Mast premium nitrided valve springs
Mast phase restrictor
Mast 12 degree LS3 cylinder heads
Mast stainless steel intake and exhaust valves, retainers and locks
Mast 8.150” pushrods
Valley cover
LS7 lifter kit (to replace the DOD lifters)
Lifter buckets

L99 Track Packages:
Stage 1 p/n 981-201 up to 68 RWHP
Stage 2 p/n 981-202 up to 78 RWHP
Stage 3 p/n 981-203 up to 125 RWHP


For more information goto: Track Packages
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Old 09-13-2010, 02:22 PM   #2
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videos and dyno sheets would be nice
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Old 09-13-2010, 02:26 PM   #3
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Old 09-13-2010, 02:38 PM   #4
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http://www.byunspeed.com/product_inf...ducts_id=12441
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Old 09-13-2010, 02:43 PM   #5
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when you factor in installation costs, it looks to be cheaper than a supercharger with the same amount of power! NICE!!!
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Old 09-13-2010, 02:44 PM   #6
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some people like to stay N/A though
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Old 09-13-2010, 03:34 PM   #7
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You claim +125RWHP for your stage 3 LS3 package...

What are your stock dyno numbers for an LS3? 630 from a heads cam seems kind of high unless you're looking at like a 20+% drivetrain loss on an LS3 and even higher on an L99.

Maybe I'm an idiot though.
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Old 09-13-2010, 07:19 PM   #8
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Quote:
Originally Posted by RedJewel2SS View Post
when you factor in installation costs, it looks to be cheaper than a supercharger with the same amount of power! NICE!!!
I wouldn't think so. The kit doesn't appear to include a new torque converter (I assume one would be needed to make the power useful), headers, CAI or a tune. There is a lot more labor involved replacing a cam and heads than to install a super charger, not to mention the labor needed to install the torque converter. I would rather have this package for my car than a supercharger though.
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Old 09-13-2010, 07:44 PM   #9
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I think Matt @ Tune Time did an article with most of this package and with DR's and stuff he ran high 11's all motor with the test Camaro.

Super Chevy Article

For the price of this package for the VVT Cam and stuff and clicking high 11's on all motor... I must say this sounds tempting.
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Old 09-13-2010, 08:50 PM   #10
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I'm having trouble with the numbers. These packages are for an L99 which is 400 hp at flywheel. Stage 3 says it adds up to 125 hp. But it also says up to 630 fwhp. Not trying to be a smart ass but I'm adding 400 plus 125 = 525, is there a typo?

Just saw that it says 125 rwhp, my bad.
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Old 09-13-2010, 08:59 PM   #11
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Just curious if there is any surging or driveability issues with the stage 3 cam?
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Old 09-13-2010, 09:11 PM   #12
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Quote:
Originally Posted by Kyle2k View Post
Just curious if there is any surging or driveability issues with the stage 3 cam?
Good question !
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Old 09-13-2010, 09:26 PM   #13
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Quote:
Originally Posted by thesnoopster View Post
I think Matt @ Tune Time did an article with most of this package and with DR's and stuff he ran high 11's all motor with the test Camaro.

Super Chevy Article

For the price of this package for the VVT Cam and stuff and clicking high 11's on all motor... I must say this sounds tempting.
That article cleared up this up a bit. That dyno had an 18.5% drivetrain loss (400FWHP made 326RWHP)

Given that loss, their final result of 452RWHP would equal 555FWHP.

while the flywheel HP may be a tad high in the original post.... that article does indeed state a 126HP gain, 46HP on the heads alone.


Those heads are sex and I want them!
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Old 09-13-2010, 09:52 PM   #14
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Quote:
Originally Posted by Heliwrench View Post
That article cleared up this up a bit. That dyno had an 18.5% drivetrain loss (400FWHP made 326RWHP)

Given that loss, their final result of 452RWHP would equal 555FWHP.

while the flywheel HP may be a tad high in the original post.... that article does indeed state a 126HP gain, 46HP on the heads alone.


Those heads are sex and I want them!
As far as I know he was running the Stage 1 cam with the heads too, not the stage 3 cam!
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Old 09-13-2010, 09:57 PM   #15
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Quote:
Originally Posted by Kyle2k View Post
As far as I know he was running the Stage 1 cam with the heads too, not the stage 3 cam!
Looking at the stage 1 vs stage 3 cam specs I'm guessing the power increase would only be around 10-15RWHP at the top which would be around 462RWHP on that car. Works out to about 566FWHP... It wont be the 630 quoted, but it's still sick either way. Much respect here from a guy who loves NA power!
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Old 09-13-2010, 10:03 PM   #16
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Quote:
Originally Posted by Heliwrench View Post
Looking at the stage 1 vs stage 3 cam specs I'm guessing the power increase would only be around 10-15RWHP at the top which would be around 462RWHP on that car. Works out to about 566FWHP... It wont be the 630 quoted, but it's still sick either way. Much respect here from a guy who loves NA power!
The additional RWHP almost doubles, don't see why it couldn't. I do however want to hear about the drivability of all three of these cams.
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Old 09-14-2010, 12:16 AM   #17
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Old 09-14-2010, 03:40 PM   #18
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Just curious if there is any surging or driveability issues with the stage 3 cam?
Bump for update, don't want it to get lost in the clutter...
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Old 09-14-2010, 06:55 PM   #19
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This might help...I read this in one of my issues of GM High Tech Magazine ....its the Cam slugfest issue that Mast did with the packages.

Hope this information help as well

Mast Cam Package Slugfest
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Old 09-14-2010, 08:27 PM   #20
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Thanks for the information, however, the article does not mention if surging, etc are present.
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Old 09-14-2010, 08:47 PM   #21
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We have worked with MAST on some special projects. Their parts and builds are top shelf.
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Old 09-14-2010, 09:16 PM   #22
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Originally Posted by Kyle2k View Post
Thanks for the information, however, the article does not mention if surging, etc are present.
I know there are a few guys that have a mast package stage 1's or 2's....and they havent chimed in on issues. I wish I had an answer for ya but im with you on this but I know they make good products....just waiting on an answer from the experts
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Old 09-14-2010, 09:25 PM   #23
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I know there are a few guys that have a mast package stage 1's or 2's....and they havent chimed in on issues. I wish I had an answer for ya but im with you on this but I know they make good products....just waiting on an answer from the experts
See that's just it, surging is not an issue of poor product, it is just the nature of a "bigger" cam....just curious is all.
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Old 09-14-2010, 10:28 PM   #24
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I have'nt heard anything negative about MAST or their products. However, a cam is just a hunk of metal that has been ground to certain specs, so i'm not worried about quality issues. The bottom line is whether these cams can be tuned to work without drivability issues, and that may vary on tuners and their experiences. I am looking into getting the stage 1 cam because the specs seem mild enough that it should be tuned without a problem. I'd like to know for sure however, so i'm also waiting for those who have any of these cams to chime in.
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