[Z06] Please need info on Katech torquer camshaft
#1
Racer
Thread Starter
Member Since: Aug 2007
Location: atholville nb
Posts: 263
Likes: 0
Received 0 Likes
on
0 Posts
Please need info on Katech torquer camshaft
Hi i am in a market for a cam for my 2007 z06
I am looking at the Katech torquer camshaft part # kat-4727 with high lift valve spring and titanium retainer clip. (0.615-/0.648-inch lift and 220/244 degree duration with a 110 degree lobe seperation should give 57hp according to:
http://www.vetteweb.com/tech/vemp_07...ion/index.html
Did anybody do this mod them self in there garage and is there a better cam out there that will produce more HP this one sim's to produce 496hp, 431lb-ft that is with full exhaust...
Please send me feed back and info on anything that you know before i atemp this mod.
PS: this is a everyday car so...
Thanks Jeff
I am looking at the Katech torquer camshaft part # kat-4727 with high lift valve spring and titanium retainer clip. (0.615-/0.648-inch lift and 220/244 degree duration with a 110 degree lobe seperation should give 57hp according to:
http://www.vetteweb.com/tech/vemp_07...ion/index.html
Did anybody do this mod them self in there garage and is there a better cam out there that will produce more HP this one sim's to produce 496hp, 431lb-ft that is with full exhaust...
Please send me feed back and info on anything that you know before i atemp this mod.
PS: this is a everyday car so...
Thanks Jeff
Last edited by catchmes2000; 12-15-2009 at 03:29 PM.
#2
Premium Supporting Vendor
Hi i am in a market for a cam for my 2007 z06
I am looking at the Katech torquer camshaft part # kat-4727 with high lift valve spring and titanium retainer clip. (0.615-/0.648-inch lift and 220/244 degree duration with a 110 degree lobe seperation should give 57hp according to:
http://www.vetteweb.com/tech/vemp_07...ion/index.html
Did anybody do this mod them self in there garage and is there a better cam out there that will produce more HP this one sim's to produce 496hp, 431lb-ft that is with full exhaust...
Please send me feed back and info on anything that you know before i atemp this mod.
Thanks Jeff
I am looking at the Katech torquer camshaft part # kat-4727 with high lift valve spring and titanium retainer clip. (0.615-/0.648-inch lift and 220/244 degree duration with a 110 degree lobe seperation should give 57hp according to:
http://www.vetteweb.com/tech/vemp_07...ion/index.html
Did anybody do this mod them self in there garage and is there a better cam out there that will produce more HP this one sim's to produce 496hp, 431lb-ft that is with full exhaust...
Please send me feed back and info on anything that you know before i atemp this mod.
Thanks Jeff
Are there cams out there that will give a better balance of average torque and drivability? In my opinion, no.
#3
I'm afraid there are no too many guys who personally experienced different cams. You rather can expect a bunch of answers, with everybody saying the cam installed in his car is the best...
If you're NOT going to build a track dedicated machine, look for torque all over the RPM range. Not for the peak torque at high RPMs..
If you're NOT going to build a track dedicated machine, look for torque all over the RPM range. Not for the peak torque at high RPMs..
#4
Instructor
Member Since: Dec 2006
Location: Colorado Springs Colorado
Posts: 144
Likes: 0
Received 0 Likes
on
0 Posts
Look at this
I only track my car. I think the cam is great like anybody else who has a cam, theirs is the best. One thing I will tell you. Katech sells parts that work as advertised.
http://www.robs427.com/htmpages/Cams...tallation1.htm
http://www.robs427.com/htmpages/Cams...tallation1.htm
#5
Race Director
Member Since: Dec 2006
Location: Fort Worth, Texas
Posts: 11,120
Received 2,054 Likes
on
1,306 Posts
I'd recommend also looking at Quality Motorsport's "Street Bully" QM550
#6
Melting Slicks
Member Since: Aug 2006
Location: Rochester NY
Posts: 2,030
Likes: 0
Received 0 Likes
on
0 Posts
My car has been in the high 10's with this set up + headers on stock bald run flats. So I agree it''s got gobs of torque all through the curve and provides great all around daily driveability.
Good choice IMO
Good choice IMO
#7
Racer
I put the Torquer cam in a few months back with the LG Pro headers
Results were very dissapointing as far as the numbers are concerned.
rwhp before was 473 at 6200, and after was 490 still at 6200, but was 15-20 up right across the graph
rwtq before was 441 at 5,000 and after was 470 at 4,000 and again was still 10 up at 7,000
So increases right across the scale but no big numbers. Timing limited by knock on pump gas
I have never got an answer as to why the actual number gains were so low on an engine that was giving good numbers on a tune only.
As far as driving goes - its great. Bags of poke but it does run out very quick after about 5500 and I am looking now at either a) a different way of timing the cam, or b) an alternative.
Good - but not great - and again I hav'nt found an alternative with a low LSA that might give me more up top without losing what I have low down
Results were very dissapointing as far as the numbers are concerned.
rwhp before was 473 at 6200, and after was 490 still at 6200, but was 15-20 up right across the graph
rwtq before was 441 at 5,000 and after was 470 at 4,000 and again was still 10 up at 7,000
So increases right across the scale but no big numbers. Timing limited by knock on pump gas
I have never got an answer as to why the actual number gains were so low on an engine that was giving good numbers on a tune only.
As far as driving goes - its great. Bags of poke but it does run out very quick after about 5500 and I am looking now at either a) a different way of timing the cam, or b) an alternative.
Good - but not great - and again I hav'nt found an alternative with a low LSA that might give me more up top without losing what I have low down
Last edited by Coldmale; 12-16-2009 at 04:28 AM.
#8
Premium Supporting Vendor
I put the Torquer cam in a few months back with the LG Pro headers
Results were very dissapointing as far as the numbers are concerned.
rwhp before was 473 at 6200, and after was 490 still at 6200, but was 15-20 up right across the graph
rwtq before was 441 at 5,000 and after was 470 at 4,000 and again was still 10 up at 7,000
So increases right across the scale but no big numbers. Timing limited by knock on pump gas
I have never got an answer as to why the actual number gains were so low on an engine that was giving good numbers on a tune only.
As far as driving goes - its great. Bags of poke but it does run out very quick after about 5500 and I am looking now at either a) a different way of timing the cam, or b) an alternative.
Good - but not great - and again I hav'nt found an alternative with a low LSA that might give me more up top without losing what I have low down
Results were very dissapointing as far as the numbers are concerned.
rwhp before was 473 at 6200, and after was 490 still at 6200, but was 15-20 up right across the graph
rwtq before was 441 at 5,000 and after was 470 at 4,000 and again was still 10 up at 7,000
So increases right across the scale but no big numbers. Timing limited by knock on pump gas
I have never got an answer as to why the actual number gains were so low on an engine that was giving good numbers on a tune only.
As far as driving goes - its great. Bags of poke but it does run out very quick after about 5500 and I am looking now at either a) a different way of timing the cam, or b) an alternative.
Good - but not great - and again I hav'nt found an alternative with a low LSA that might give me more up top without losing what I have low down
This is very abnormal. Even on our very conservative Mustang dyno we see a minimum of 500rwhp if the car has intake and exhaust. These are cars that baselined at 430rwhp on the same dyno. There has got to be something in the calibration, or like you said you're fighting knock retard.
#9
Drifting
I have owned three C6 Z06's including my current one that I installed a Katech Torquer cam, springs, and retainers in. Every one produced 500+ ft/lbs of wheel torque. Torque (power) is what you feel. Displacement + compression ratio + airflow = torgue. HP (work over time) is a function of rpm and is just a mathematical formula. 10 liter turbocharged diesel engines produce 500 hp and 1800 ft/lbs of torgue at 1800 rpm
From 2500 to 6000 rpm the Katech torquer cam is hard to beat in a stock internals LS7 street engine. Reasonable idle and low speed manners. Needs a little work on the tune at idle and under 1800 rpm due to the overlap.
With a ported intake and throttle body and a good set of 1 7/8 inch headers the rush at 3500 rpm is hard to describe.
I have tried the QM600 and a custom grind Comp cam but the Katech Torquer is my favorite for a street/track day car.
Link to idle videos:
http://performanceproductsltd.com/Page2.html
From 2500 to 6000 rpm the Katech torquer cam is hard to beat in a stock internals LS7 street engine. Reasonable idle and low speed manners. Needs a little work on the tune at idle and under 1800 rpm due to the overlap.
With a ported intake and throttle body and a good set of 1 7/8 inch headers the rush at 3500 rpm is hard to describe.
I have tried the QM600 and a custom grind Comp cam but the Katech Torquer is my favorite for a street/track day car.
Link to idle videos:
http://performanceproductsltd.com/Page2.html
Last edited by wstaab; 12-16-2009 at 10:01 AM.
#10
Racer
This is very abnormal. Even on our very conservative Mustang dyno we see a minimum of 500rwhp if the car has intake and exhaust. These are cars that baselined at 430rwhp on the same dyno. There has got to be something in the calibration, or like you said you're fighting knock retard.
I believe the max timing we have is 24deg and fuel is supposed to be 93. I am actually thinking of going to methanol to improve on this.
On the same dyno (Dynojet, SAE) with the same tuner, best z is 580rwhp and most run in the 530-560 mark with all sorts of N/A mods and of course at 580 the cam is very agressive. I believe many guys are using cams around 235/255 @ 110/111
One solution maybe:-
Do you sell a tune for this cam?. You can PM me on this as quite honestly I am about to change it for a "lethal"/"punisher" type profile, but I dont want to loose what I have up to 4500. Its the sharp fall off above 4500 thats the killer. tq at 7000 is just 340, rwhp 460
#11
Racer
Thread Starter
Member Since: Aug 2007
Location: atholville nb
Posts: 263
Likes: 0
Received 0 Likes
on
0 Posts
I have owned three C6 Z06's including my current one that I installed a Katech Torquer cam, springs, and retainers in. Every one produced 500+ ft/lbs of wheel torque. Torque (power) is what you feel. Displacement + compression ratio + airflow = torgue. HP (work over time) is a function of rpm and is just a mathematical formula. 10 liter turbocharged diesel engines produce 500 hp and 1800 ft/lbs of torgue at 1800 rpm
From 2500 to 6000 rpm the Katech torquer cam is hard to beat in a stock internals LS7 street engine. Reasonable idle and low speed manners. Needs a little work on the tune at idle and under 1800 rpm due to the overlap.
With a ported intake and throttle body and a good set of 1 7/8 inch headers the rush at 3500 rpm is hard to describe.
I have tried the QM600 and a custom grind Comp cam but the Katech Torquer is my favorite for a street/track day car.
Link to idle videos:
http://performanceproductsltd.com/Page2.html
From 2500 to 6000 rpm the Katech torquer cam is hard to beat in a stock internals LS7 street engine. Reasonable idle and low speed manners. Needs a little work on the tune at idle and under 1800 rpm due to the overlap.
With a ported intake and throttle body and a good set of 1 7/8 inch headers the rush at 3500 rpm is hard to describe.
I have tried the QM600 and a custom grind Comp cam but the Katech Torquer is my favorite for a street/track day car.
Link to idle videos:
http://performanceproductsltd.com/Page2.html
Jeff
#12
Drifting
The tuning trick on the LS7 with a cam is AFR vs timing advance.
What AFR is your tuner using?
There is a fine line between leaner with less timing and richer with more timing. The only way to accurately find the right combination is with a load control dyno and tune for max torque using timing advance with the correct AFR.
What AFR is your tuner using?
There is a fine line between leaner with less timing and richer with more timing. The only way to accurately find the right combination is with a load control dyno and tune for max torque using timing advance with the correct AFR.
#13
Racer
The tuning trick on the LS7 with a cam is AFR vs timing advance.
What AFR is your tuner using?
There is a fine line between leaner with less timing and richer with more timing. The only way to accurately find the right combination is with a load control dyno and tune for max torque using timing advance with the correct AFR.
What AFR is your tuner using?
There is a fine line between leaner with less timing and richer with more timing. The only way to accurately find the right combination is with a load control dyno and tune for max torque using timing advance with the correct AFR.
Here then is the real Mckoy
Taken from my "racelogic" data logger we find the following by accelerating (foot to the floor) from a 50Km/hr hairpin (see my avator)and down a 500m straight. In 2nd gear pulling from 2500rpm, long't acc'l peaks from 4400 - 5300 between 0.8 and 0.85g. Actual max is 0.886g at 97km/hr at 4,900rpm
Changing to 3rd at 140 (7000) peak g is 0.45g at 155 or 5600rpm, average is 0.425 dropping to 0.375
Changing to 4th at 186 (a tad early) peak g is 0.26 at 204km/hr or 5500
As you can see the cam is sh*t hot pulling from 2500 in 2nd, but in 3rd and 4th it just dosnt quite hit the mark
Last edited by Coldmale; 12-17-2009 at 02:17 AM.
#14
Premium Supporting Vendor
Jason
I believe the max timing we have is 24deg and fuel is supposed to be 93. I am actually thinking of going to methanol to improve on this.
On the same dyno (Dynojet, SAE) with the same tuner, best z is 580rwhp and most run in the 530-560 mark with all sorts of N/A mods and of course at 580 the cam is very agressive. I believe many guys are using cams around 235/255 @ 110/111
One solution maybe:-
Do you sell a tune for this cam?. You can PM me on this as quite honestly I am about to change it for a "lethal"/"punisher" type profile, but I dont want to loose what I have up to 4500. Its the sharp fall off above 4500 thats the killer. tq at 7000 is just 340, rwhp 460
I believe the max timing we have is 24deg and fuel is supposed to be 93. I am actually thinking of going to methanol to improve on this.
On the same dyno (Dynojet, SAE) with the same tuner, best z is 580rwhp and most run in the 530-560 mark with all sorts of N/A mods and of course at 580 the cam is very agressive. I believe many guys are using cams around 235/255 @ 110/111
One solution maybe:-
Do you sell a tune for this cam?. You can PM me on this as quite honestly I am about to change it for a "lethal"/"punisher" type profile, but I dont want to loose what I have up to 4500. Its the sharp fall off above 4500 thats the killer. tq at 7000 is just 340, rwhp 460
#15
I can tell you there are cam's making better numbers but it would be hard to find a better user friendly cam .If you want to come out of the hole hard and not have to always be in the power band give Jason a call . It's hard to argue with the people who stand behind it .
#16
Drifting
Member Since: Feb 2007
Location: Alpharetta Georgia
Posts: 1,843
Likes: 0
Received 12 Likes
on
8 Posts
Jason, does katech ever plan to offer more of a cam selection for the LS7 aside from the torquer? There are those of us who just might want a bit more power(and some drive-ability tradeoff) but would also like to have the peace of mind knowing the cam was spintron tested with a particular set of springs and had no harmonic/valve control issues.
#17
Instructor
Jason, does katech ever plan to offer more of a cam selection for the LS7 aside from the torquer? There are those of us who just might want a bit more power(and some drive-ability tradeoff) but would also like to have the peace of mind knowing the cam was spintron tested with a particular set of springs and had no harmonic/valve control issues.
Here is our last engine dyno. The LS7E85 motor is now running 13:1 cr with the LSXR 102 and WP 102 TB, Killer Bee. It produces 660 HP with tuning and two other mods not dynoed and is a pleasure to drive, with zero surging due in part to the lower overlap, and placement of the MAF sensor forward.
This is enough HP and torque to unload 2nd gear at half throttle at 70 mph during the summer. No streetable tire on the market today will hold this power.
#18
Premium Supporting Vendor
Jason, does katech ever plan to offer more of a cam selection for the LS7 aside from the torquer? There are those of us who just might want a bit more power(and some drive-ability tradeoff) but would also like to have the peace of mind knowing the cam was spintron tested with a particular set of springs and had no harmonic/valve control issues.
#19
Racer
I like the Torquer 116, which is their Torquer cam specs exactly, but set up on a 116 LSA.
Here is our last engine dyno. The LS7E85 motor is now running 13:1 cr with the LSXR 102 and WP 102 TB, Killer Bee. It produces 660 HP with tuning and two other mods not dynoed and is a pleasure to drive, with zero surging due in part to the lower overlap, and placement of the MAF sensor forward.
Here is our last engine dyno. The LS7E85 motor is now running 13:1 cr with the LSXR 102 and WP 102 TB, Killer Bee. It produces 660 HP with tuning and two other mods not dynoed and is a pleasure to drive, with zero surging due in part to the lower overlap, and placement of the MAF sensor forward.
What is a Torquer 116? or how did you achieve 116 with a 110 cam?
Also - See amendemnt to post #13
#20
Drifting
Member Since: Jul 2003
Location: Austin tx
Posts: 1,895
Likes: 0
Received 0 Likes
on
0 Posts
St. Jude Donor '09
Does anyone have a dyno graph of this cam with the basic bolt-ons? i.e. headers and CAI
I would like to see what the cam looks like through the whole power band; the above grape is getting a bit to crazy for what I would consider doing anytime soon.
thanks
Ray
I would like to see what the cam looks like through the whole power band; the above grape is getting a bit to crazy for what I would consider doing anytime soon.
thanks
Ray