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2019 Comp cams stage 2 NSR installed!

shogun32

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from article
We should specify that for a valvetrain specialist such as John, Boss engine speeds do not end at the production car's 7,500 rpm. "We have a design guide so that if the fuel shut off is 7,500, we want the valvetrain to be stable to 400-rpm over that in case of over-speed events, missed shift on a downshift, or whatever. [This is to] make sure that if there is a momentary over-speed, the valvetrain doesn't come apart. If you throw a rocker arm or bend a valve--and it doesn't take long to do that under the wrong conditions--then you can lose your whole engine." Told that one of the Grand Am racers had managed to wing a RoadRunner to 9,000 rpm on a missed downshift with no apparent damage, Mark's commented, "I can only warranty it to 7,900, but I'm glad it worked!"


So, when Ford says redline is 7,500 rpm, their valvetrain engineers are really aiming closer to 8,000 rpm.
Doesn't defend going to 8300 but then again it's 2020 now, not 2010 so perhaps the spring's goal posts have been moved considerably since then, especially since they had to do so vis a vis Voodoo.
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from article

Doesn't defend going to 8300 but then again it's 2020 now, not 2010 so perhaps the spring's goal posts have been moved considerably since then, especially since they had to do so vis a vis Voodoo.
This guy has a love affair with my 8300rpm. It’s flattering.
 

bootlegger

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This guy has a love affair with my 8300rpm. It’s flattering.
I have a love affair with it. I would love to make power all the way to 8000. :inlove:
 
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Chad1986

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It's lots a fun making power to 8000 plus rpm! I love being able to stretch my cars legs out. When someone next to you is shifting at 7300 and your shifting at 8300 you can tell the difference, and the car stays up high enough on the shift to stay well into the peak power. Plus the way they sound is awesome.
 

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revinto7

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LMK when they make REAL cams like STG 2 VSR cams so i can rev this thing to 8600 and make 525rwhp 455tq NA !! I spun my 07 3v to 8300 for 3 years on the street with a vortech on 10 psi and 93
and big spr cams stock top end car flew never missed a beat never broken a day 10.20 138 mph . seems like a lot of work to do for small gains with these NSR cams at this time
 
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Slamdcoop0428

Slamdcoop0428

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LMK when they make REAL cams like STG 2 VSR cams so i can rev this thing to 8600 and make 525rwhp 455tq NA !! I spun my 07 3v to 8300 for 3 years on the street with a blower and big spr cams stock top end car flew never missed a beat never broken a day 10.20 138 mph . seems like a lot of work to do for small gains with these NSR cams at this time
Congrats! You went slower than a 2018 is going NA with the same cams I run. I’d say they work.
 

NotagainV2

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LOL until people have drove a gen3 A10 car with cams and a CJ youll truely never understand. The gen3 makes more torque than the gen2s due to DI and IMO the gen3s are "knock limited" on pump gas due to the compression ratio.

Thats part of the reason stock gen3s really wake up with E85 too
 

revinto7

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Congrats! You went slower than a 2018 is going NA with the same cams I run. I’d say they work.
10.20s on a 3v 8 years ago running pump gas with a bolt on vortech was very respectable .now i own an 18 A10 PP and 19 Bullitt .we need some real cams for these cars not the NSR garbage cams ..stuff with real duration and lift .
 

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10.20s on a 3v 8 years ago running pump gas with a bolt on vortech was very respectable .now i own an 18 A10 PP and 19 Bullitt .we need some real cams for these cars not the NSR garbage cams ..stuff with real duration and lift .
Comp has other non NSR NSR cams already and there are places for custom grinds. It's just that these cams are easy, accessible, and work well for street cars.

The beauty of centrifugal blowers is that they are mechanically linked to engine speed. So the higher you rev them the more boost they make. More than a decade ago I was revving a stock cam pushrod motor to 7400 rpm with a vortech and I would have gone further if the valve train was up for it. That same cam fell off the cliff at 5500 running n/a.
 

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NotagainV2

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10.20s on a 3v 8 years ago running pump gas with a bolt on vortech was very respectable .now i own an 18 A10 PP and 19 Bullitt .we need some real cams for these cars not the NSR garbage cams ..stuff with real duration and lift .
You can only go so far before the vct has to get locked. By doing so you severly handicap a small cube engine. The dual vct on both intake and exhaust cams is the magic that makes this engine impressive.

If you want a max effort NA drag cam by all means put a big lift cam in it but its going to come at the expense of VCT being locked.
 

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LMK when they make REAL cams like STG 2 VSR cams so i can rev this thing to 8600 and make 525rwhp 455tq NA !! I spun my 07 3v to 8300 for 3 years on the street with a vortech on 10 psi and 93
and big spr cams stock top end car flew never missed a beat never broken a day 10.20 138 mph . seems like a lot of work to do for small gains with these NSR cams at this time
10.20s on a 3v 8 years ago running pump gas with a bolt on vortech was very respectable .now i own an 18 A10 PP and 19 Bullitt .we need some real cams for these cars not the NSR garbage cams ..stuff with real duration and lift .
You can only go so far before the vct has to get locked. By doing so you severly handicap a small cube engine. The dual vct on both intake and exhaust cams is the magic that makes this engine impressive.

If you want a max effort NA drag cam by all means put a big lift cam in it but its going to come at the expense of VCT being locked.
Yes I agree. Sure you can get aggressive, track dedicated cams for all out performance. But will they compromise street performance? I want cams that will retain stock road manners and not trigger a check engine light.
 

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Comp has other non NSR NSR cams already and there are places for custom grinds. It's just that these cams are easy, accessible, and work well for street cars.

The beauty of centrifugal blowers is that they are mechanically linked to engine speed. So the higher you rev them the more boost they make. More than a decade ago I was revving a stock cam pushrod motor to 7400 rpm with a vortech and I would have gone further if the valve train was up for it. That same cam fell off the cliff at 5500 running n/a.
Wouldnt that apply to PD blowers also, since all superchargers are driven off of the crankshaft.
 

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Wouldnt that apply to PD blowers also, since all superchargers are driven off of the crankshaft.
Yes but PD blowers are not as efficient at high RPM like centrifugal blowers so performance drops off at high RPM with PD blower. Most PD blowers move so much air at lower RPM that they make big boost at lower RPM.
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