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Spec me a sleeper cam!

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Old 01-26-2008, 05:32 PM
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Default Spec me a sleeper cam!

Hey guys I am looking for a sleeper cam to go in a 02 Z28 w/LS2 conversion. The car has Pacesetter 1 3/4 LT headers, off road Y, and stock catback for exhaust mods. I want it to be a true sleeper cam with no indication of lope @ 650ish rpm idle. The car is an auto running on the stock stall for now. Probably end up going with a 3k stall in the near future. Most likely I will get an electric cut out as well to bypass the stock muffler at the track.

What are your recommendations?
Old 01-26-2008, 07:04 PM
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Use Comp XE lobes and 918 springs to keep the valve clatter down. (more stealthy)

216/220 .561/.564 115LSA +3 advance

If this were a 6 speed, I'd recommend +1 advance, but for an automatic, you want +3 advance to have all of your power in by 6000-6100 rpm (to preserve tranny life and give more grunt down low with stock stall).
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2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
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Old 01-26-2008, 07:07 PM
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Originally Posted by Patrick G
Use Comp XE lobes and 918 springs to keep the valve clatter down. (more stealthy)

216/220 .561/.564 115LSA +3 advance

If this were a 6 speed, I'd recommend +1 advance, but for an automatic, you want +3 advance to have all of your power in by 6000-6100 rpm (to preserve tranny life and give more grunt down low with stock stall).
What kind of rwhp increase would that give me? Thanks Patrick!
Old 01-26-2008, 07:38 PM
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With an automatic, probably around 35 rhwp.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
Old 01-26-2008, 08:32 PM
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go to thunder racing and check out the Cheater cam shaft, they call it the cheater for a reason. I have the cam and I love it better than alot of the bigger cams out there
Old 01-26-2008, 08:51 PM
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Originally Posted by 99z28monster
go to thunder racing and check out the Cheater cam shaft, they call it the cheater for a reason. I have the cam and I love it better than alot of the bigger cams out there
CheaTR is not as stealthy as the cam I recommended. The CheaTR will have a noticable beat to it at 650 rpm. Great cam, but only stealth with a higher idle speed than 650 rpm. There is no need for a 230 duration exhaust lobe when you have long tube headers. The CheaTR excels with stock exhaust manifolds.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
Old 01-27-2008, 11:06 AM
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I thought the CheaTR camshaft had a higher peak RPM (6800 or so) and I wasn't looking to spin the motor that high. Not yet at least! I also came across the Lingenfelter GT11 cam 215/231 .631"/.641" 118 LSA, but I figure thats very similar to the CheaTR. Maybe has a few extra hp up top. I'm not against running higher lift since after about a year or so I plan on doing an L92 top end conversion on the car. Patrick what kind of gains would the aggresive lobes and higher lift gain? I would suffer some valvetrain noise for a few hp/trq.
Old 01-28-2008, 08:46 AM
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My understanding is that the CTS-V lifters have significantly less valvetrain noise, if that's one of the things you're concerned about...
Old 01-28-2008, 12:25 PM
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Originally Posted by V8Rumble
My understanding is that the CTS-V lifters have significantly less valvetrain noise, if that's one of the things you're concerned about...
Originally Posted by JohnDaMan
I thought the CheaTR camshaft had a higher peak RPM (6800 or so) and I wasn't looking to spin the motor that high. Not yet at least! I also came across the Lingenfelter GT11 cam 215/231 .631"/.641" 118 LSA, but I figure thats very similar to the CheaTR. Maybe has a few extra hp up top. I'm not against running higher lift since after about a year or so I plan on doing an L92 top end conversion on the car. Patrick what kind of gains would the aggresive lobes and higher lift gain? I would suffer some valvetrain noise for a few hp/trq.
Going from XE lobes to XFI lobes would gain you around 5 rwhp. While this is basically free hp (same drivability), you will need to run more expensive dual valve springs and you will have a noticable increase in valve clatter. Not my idea of stealth (if you're wanting to be sneaky).

Also, the LS6 lifters in the CTS-Vs are not any quieter than other factory LS1 lifters.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
Old 02-02-2008, 09:17 AM
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Originally Posted by Patrick G
CheaTR is not as stealthy as the cam I recommended. The CheaTR will have a noticable beat to it at 650 rpm. Great cam, but only stealth with a higher idle speed than 650 rpm. There is no need for a 230 duration exhaust lobe when you have long tube headers. The CheaTR excels with stock exhaust manifolds.

Patrick, can you spec something that will work with the stock exhaust manifolds/cats and nitrous that will be a good sleeper cam with near stock drivability on a M6 99 Vette, using the 918 springs for less valve train noise.

I was looking into the cheatR and if the idle lope at ~650rpm is the only draw back i may be able to work around that , it sounds like exactly what i was looking for. I may add long tubes and a later date but Im kind of a noise/resonance **** !
Old 02-02-2008, 10:06 AM
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I ran a 220/224 115+2 with XER lobes in my LS1. It idled with virtually no lope. You had to know what you were listening for to hear any lope.
Old 02-02-2008, 10:31 AM
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I ran an LPE GT2-3 207/220 .571/.578 118 on my 02 Firehawk. It sounded completely stock. With ARE heads (and they sucked if you guys recall), I made 385 to the wheels - about +60 RWHP from stock. That was on the stock tune, too, I didn't even re-tune it other than turning of Cat Overtemp and some codes. You couldn't tell it wasn't stock, though, that was the great part.

-Geoff
Old 02-05-2008, 02:10 PM
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Most folks only know I have the cheater in my car when I tell them. Unless you really know what you are listening for then you can tell but I would guess about 95% people out there would not know it by the sound. However like Patrick G said it is good for use with a mostly stock exhaust setup such as the manifolds. I just havent changed it because I dont wanna lose any torque going to a bigger cam. Good luck with the cam search. I dont know why you would set your idle at 650 though I thought it is 800rpm stock settings.
Old 02-05-2008, 04:06 PM
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I dont know why you would set your idle at 650 though I thought it is 800rpm stock settings.
800 rpm is stock idle for an M6.
He has an automatic. 800 rpm on stock stall starts to fight you a bit at a stop. You can live with it, but 650 will be nicer for a daily driver.
Old 02-20-2008, 10:21 PM
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whats the best sleeper cam for a stock 01 motor with ls6 intake and 1 3/4 to 1 7/8 stepped longtubes to bassani true dual through x pipe, looking for as close to stock idle as possible but also a cam that can benefit from exhaust mods and other bolt ons without being too noticeable as it is a dd
Old 02-20-2008, 11:05 PM
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I thought that Predator Z was running well into the 11's with only a Stealth II (forget mfg, low duration 'sleeper' cam) and headers on an A4. That is pretty quick for a "Sleeper" cam...
Old 02-21-2008, 12:48 AM
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Originally Posted by ronnieforrester
Patrick, can you spec something that will work with the stock exhaust manifolds/cats and nitrous that will be a good sleeper cam with near stock drivability on a M6 99 Vette, using the 918 springs for less valve train noise.

I was looking into the cheatR and if the idle lope at ~650rpm is the only draw back i may be able to work around that , it sounds like exactly what i was looking for. I may add long tubes and a later date but Im kind of a noise/resonance **** !
then you should never, ever go to watch Nitromethane cars run.
Old 02-21-2008, 02:51 AM
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Originally Posted by LSGunZ28
go to watch Nitromethane cars run.


Oh the question... talk to Pred. he's got some good experience with sleeper setups.
Old 02-21-2008, 10:12 AM
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Originally Posted by gun5l1ng3r
I thought that Predator Z was running well into the 11's with only a Stealth II (forget mfg, low duration 'sleeper' cam) and headers on an A4. That is pretty quick for a "Sleeper" cam...
MTI makes it
Old 02-21-2008, 10:28 AM
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204/211-.525/.525-116


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