[PICS] Katech Track Attack Z06 SN#048 breaks chassis dyno record
04-15-2011, 08:44 AM
#1
[PICS] Katech Track Attack Z06 SN#048 breaks chassis dyno record -Highest rwhp NA car ever built by Katech
-Highest rwhp NA car ever on Vector Motorsports' dyno
We just wrapped up this Z06 with the following:
Track Attack LS7 engine (11.85:1CR)
FAST intake
CF Valve Covers/CRB
NW 102mm TB
ARE Stage 3 dry sump system
Halltech CF112+SuperBeehive
RPM Level V + Quaife
Exedy twin disk clutch
Dewitts radiator
Corsa exhaust
Already equipped:
Stoptech brakes
LG splitter/side skirts
MPSC tires
Moton Motorsport 4-way ($
)
Kooks headers
572rwhp/547rwtq on 93 octane
592rwhp/573rwtq on 104 octane
Vector Powercal cable to switch calibrations so the customer can easily switch between fuels
My impressions:
I am shocked at how well this car drives. It has the GM Stage 3 cam in it so I didn't expect the drivability to be very good with 40 degrees of overlap. I've driven a couple other cars with the cam, the Katech LS7-powered Camaro SS and Everett's Mosler MT900KR. Those cars both had higher gear ratios which put the cruising rpm at a point which is more tolerable with the GM Stage 3 cam. With the Z06's 5th and 6th gear ratios I was concerned that the bucking at low rpm low throttle input could be intolerable. It's not. I attribute that to a few factors. The car is equipped with all of the ingredients that really help to smooth out a big cam. First, it has a Halltech Superbee CF 112 intake with the MAF forward design. I've noticed that this slightly improves the drivability of the Torquer cam on my car and it's even more of an improvement with the GM Stage 3. I believe the MAF forward design moves the MAF sensor futher away from being buffeted by cam pulses. Second, it has a 102mm intake and throttle body. This also seems to help with smoothing. Third, it's got a lighter clutch. Based on my experience it seems that the lighter clutches do not lash the drivetrain as much when the cam starts to buck the engine. It seems that if you have a larger mass on the end of the crankshaft it can get into a rhythm and compound the problem. Fourth, I have to commend our tuner over at Vector (Steve) who really has this thing dialed in as much as good as it can get. You can't cal duration and this things got a lot of it. I can cruise at 1500rpm and with throttle modulation can keep the cam bucking to a minimum. I've driven the car at 1200rpm and it drives, it just doesn't like being that low.
As far as power, I know on the internet if it's not over 600rwhp people are not impressed, but in the context of our chassis dyno these numbers are staggering. When our Torquer cam makes 515rwhp on our dyno and RichieRich makes 582rwhp with the same cam, I'm convinced this is at least a 630rwhp car on other dynos. Is the car fast? Frankly I have no idea. With MPSC tires in 50 degree Michigan spring weather, if you get your foot anywhere near the throttle the tires light up. From a roll I was never able to exceed half throttle. On a hot track in the summer time this car will be a menace. I foresee a big wing in this customer's future.
There is nothing better than the small of Sunoco GT Plus in the morning.
-Highest rwhp NA car ever on Vector Motorsports' dyno
We just wrapped up this Z06 with the following:
Track Attack LS7 engine (11.85:1CR)
FAST intake
CF Valve Covers/CRB
NW 102mm TB
ARE Stage 3 dry sump system
Halltech CF112+SuperBeehive
RPM Level V + Quaife
Exedy twin disk clutch
Dewitts radiator
Corsa exhaust
Already equipped:
Stoptech brakes
LG splitter/side skirts
MPSC tires
Moton Motorsport 4-way ($
)Kooks headers
572rwhp/547rwtq on 93 octane
592rwhp/573rwtq on 104 octane
Vector Powercal cable to switch calibrations so the customer can easily switch between fuels
My impressions:
I am shocked at how well this car drives. It has the GM Stage 3 cam in it so I didn't expect the drivability to be very good with 40 degrees of overlap. I've driven a couple other cars with the cam, the Katech LS7-powered Camaro SS and Everett's Mosler MT900KR. Those cars both had higher gear ratios which put the cruising rpm at a point which is more tolerable with the GM Stage 3 cam. With the Z06's 5th and 6th gear ratios I was concerned that the bucking at low rpm low throttle input could be intolerable. It's not. I attribute that to a few factors. The car is equipped with all of the ingredients that really help to smooth out a big cam. First, it has a Halltech Superbee CF 112 intake with the MAF forward design. I've noticed that this slightly improves the drivability of the Torquer cam on my car and it's even more of an improvement with the GM Stage 3. I believe the MAF forward design moves the MAF sensor futher away from being buffeted by cam pulses. Second, it has a 102mm intake and throttle body. This also seems to help with smoothing. Third, it's got a lighter clutch. Based on my experience it seems that the lighter clutches do not lash the drivetrain as much when the cam starts to buck the engine. It seems that if you have a larger mass on the end of the crankshaft it can get into a rhythm and compound the problem. Fourth, I have to commend our tuner over at Vector (Steve) who really has this thing dialed in as much as good as it can get. You can't cal duration and this things got a lot of it. I can cruise at 1500rpm and with throttle modulation can keep the cam bucking to a minimum. I've driven the car at 1200rpm and it drives, it just doesn't like being that low.
As far as power, I know on the internet if it's not over 600rwhp people are not impressed, but in the context of our chassis dyno these numbers are staggering. When our Torquer cam makes 515rwhp on our dyno and RichieRich makes 582rwhp with the same cam, I'm convinced this is at least a 630rwhp car on other dynos. Is the car fast? Frankly I have no idea. With MPSC tires in 50 degree Michigan spring weather, if you get your foot anywhere near the throttle the tires light up. From a roll I was never able to exceed half throttle. On a hot track in the summer time this car will be a menace. I foresee a big wing in this customer's future.
There is nothing better than the small of Sunoco GT Plus in the morning.
04-16-2011, 06:24 AM
#7
Trending Topics
04-17-2011, 06:48 AM
#10
yeah this is the first time I am seeing those motons's in use on an MI car. For $12k (the cost of most 4th gens these days) Id be curious on how different the cars drives or how much better I should say...
That monster looks great, so do the graphs, thanks for sharing Katech
The CF looks great under the hood but man if they made CF pieces to replace that stock plastic on the inside of the fenders that sit on the sides of the engine bay. That would really make that bay pop! (You can see it in the first pic really well how bad the stock piece sticks out like a sore thumb).
That monster looks great, so do the graphs, thanks for sharing Katech
The CF looks great under the hood but man if they made CF pieces to replace that stock plastic on the inside of the fenders that sit on the sides of the engine bay. That would really make that bay pop! (You can see it in the first pic really well how bad the stock piece sticks out like a sore thumb).
Last edited by Fb0dy0nly; 04-17-2011 at 06:56 AM.
04-18-2011, 12:23 PM
#12
yeah this is the first time I am seeing those motons's in use on an MI car. For $12k (the cost of most 4th gens these days) Id be curious on how different the cars drives or how much better I should say...
That monster looks great, so do the graphs, thanks for sharing Katech
The CF looks great under the hood but man if they made CF pieces to replace that stock plastic on the inside of the fenders that sit on the sides of the engine bay. That would really make that bay pop! (You can see it in the first pic really well how bad the stock piece sticks out like a sore thumb).
That monster looks great, so do the graphs, thanks for sharing Katech
The CF looks great under the hood but man if they made CF pieces to replace that stock plastic on the inside of the fenders that sit on the sides of the engine bay. That would really make that bay pop! (You can see it in the first pic really well how bad the stock piece sticks out like a sore thumb).
Agreed on the carbon fiber inner fender pieces. They would look great bu they would be a pain to install.
$749.99
04-21-2011, 10:30 PM
#16
10 Second Club
iTrader: (8)
I thought that cam was suppose to peak @ 6800 according to GM's spec. Did you guys degree it differently? Also What was done to the heads? I have a ls7 and may be interested in this setup,
04-22-2011, 07:15 AM
#17
Heads are CNC ported, valve-jobbed with bronze valve guides installed.
