Anyone have a Katech torquer cam?
Thread Starter
Team Owner
Joined: Mar 2001
Posts: 25,889
Likes: 7
From: Virginia Beach
CI 3-5-6-7-8 Veteran
Anyone have a Katech torquer cam?
How's it drive... does it make killer mid range torque? Looks like a '02-'04 Z06 cam but on a 112 LSA vs. the 117.5 stock LSA.
Looking for something w/ truly stock drivability and killer mid-range torque.
Thanks,
Brian
Looking for something w/ truly stock drivability and killer mid-range torque.
Thanks,
Brian
Burning Brakes
Joined: Jan 2009
Posts: 939
Likes: 52
From: The Woodlands Texas
I asked if anyone has heard of or used Katech's head and cam setup a while ago and got nothing. I don't think anyone on the vette websites have experience with their heads/cam, only the total engine packages. I would think that these guys know what it takes to make these cars sing with the stock cube displacement but I might be wrong.
Racer
Joined: Aug 2002
Posts: 417
Likes: 1
From: Florida
Cobra4B,
I noticed you have the G5X2 in your car. Do you feel that the cam you have is a bit much for a daily driver? The reason why i'm asking is because I'm looking at something smaller 228/230 on 112-114 and I was wondering how that was going to be as far as having "manners" I know its off topic but I had to ask.
I noticed you have the G5X2 in your car. Do you feel that the cam you have is a bit much for a daily driver? The reason why i'm asking is because I'm looking at something smaller 228/230 on 112-114 and I was wondering how that was going to be as far as having "manners" I know its off topic but I had to ask.
Thread Starter
Team Owner
Joined: Mar 2001
Posts: 25,889
Likes: 7
From: Virginia Beach
CI 3-5-6-7-8 Veteran
Cobra4B,
I noticed you have the G5X2 in your car. Do you feel that the cam you have is a bit much for a daily driver? The reason why i'm asking is because I'm looking at something smaller 228/230 on 112-114 and I was wondering how that was going to be as far as having "manners" I know its off topic but I had to ask.
I noticed you have the G5X2 in your car. Do you feel that the cam you have is a bit much for a daily driver? The reason why i'm asking is because I'm looking at something smaller 228/230 on 112-114 and I was wondering how that was going to be as far as having "manners" I know its off topic but I had to ask.
So... instead of putting in a heavier flywheel I want a cam with better manners... I want to be able to let the car idle along in gear in the morning in stop/go traffic.
It's really all about how you're going to use the car and what your tolerance is. When I first got my car back in '03 I was 22 and wanted it to be as loud as possible etc... now 6 years later I have a different set of needs/wants.
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
Brian, the cam I use has that killer midrange you're looking for, but it still has great power in the upper band. Crane "Z" cam 228-232@112+5. It idles at 825 with a mild lope, and hit 350RWTQ @ 2200. The grind also increases your DCR.
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Thread Starter
Team Owner
Joined: Mar 2001
Posts: 25,889
Likes: 7
From: Virginia Beach
CI 3-5-6-7-8 Veteran
How's it drive though? Could you let the car roll forard in gear at idle under it's own power? My car stock could do that just fine... w/ the G5-X2 cam it'd start bucking itself into oblivion due to the overlap.
Le Mans Master
Joined: Apr 2005
Posts: 8,077
Likes: 4
From: Scarborough ONTARIO
Why dont u buy G5x1-E cam as it has great driveability and u already driven ur buddies vette who has G5x1-E, i ust placed the order CMC-14 from 21stcenturymusclecars.com 228/232 595/598 113+0, i think this cam would be perfect, i want power, good street manners, emmission legal, little choppy idle.....little bit of everything i was almost plcaed the order for G5x1-E but at the last min i changed my mind.
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
With the stock LS6 clutch, it'll just idle away from a dead stop, without really slipping it much. The Crane cam's specs are very similar to the G5X-1 mentioned above, but the lobes are a different design, there's more lift, and more advance ground in.
Melting Slicks
Joined: Jul 2007
Posts: 2,087
Likes: 11
From: Austin TX
Find a cam with no/negative overlap and it will VERY tame...heck you might even pass emissions with a cam with about -7* of overlap. I think advanced dyno (not sure if they are around anymore since I havent seen them on the boards in a while) had a cam with negative ol and made great numbers...
Thread Starter
Team Owner
Joined: Mar 2001
Posts: 25,889
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From: Virginia Beach
CI 3-5-6-7-8 Veteran
What calculation do you use to determine overlap?
EDIT: Found this...
EDIT: Found this...
Overlap
Overlap is the angle in crankshaft degrees that both the intake and exhaust valves are open. This occurs at the end of the exhaust stroke and the beginning of the intake stroke. Increasing lift duration and/or decreasing lobe separation increases overlap. At high engine speeds, overlap allows the rush of exhaust gasses out the exhaust valve to help pull the fresh air/fuel mixture into the cylinder through the intake valve. Increased engine speed enhances the effect. Therefore increasing overlap, increases top-end power and reduces low-speed power and idle quality.
Overlap is the angle in crankshaft degrees that both the intake and exhaust valves are open. This occurs at the end of the exhaust stroke and the beginning of the intake stroke. Increasing lift duration and/or decreasing lobe separation increases overlap. At high engine speeds, overlap allows the rush of exhaust gasses out the exhaust valve to help pull the fresh air/fuel mixture into the cylinder through the intake valve. Increased engine speed enhances the effect. Therefore increasing overlap, increases top-end power and reduces low-speed power and idle quality.
Last edited by Cobra4B; Mar 1, 2009 at 07:16 PM.
Thread Starter
Team Owner
Joined: Mar 2001
Posts: 25,889
Likes: 7
From: Virginia Beach
CI 3-5-6-7-8 Veteran
Found this calculator: http://www.wallaceracing.com/overlap-calc.php
Shows the 204/218 w/ a 112 LSA has -13 degrees of overlap. My G5-X2 has 8 degrees of overlap.
Shows the 204/218 w/ a 112 LSA has -13 degrees of overlap. My G5-X2 has 8 degrees of overlap.
