NA cam + Blower - Will this combo work
#1
Drifting
Thread Starter
NA cam + Blower - Will this combo work
Well, Since I dont want to go through the process of buying and re-installing a blower cam on my car, at least for the time being.
So, im wondering if say an LG X3 cam or a QM600 would work with a Centrifugal SC. I understand its not the best option, but will the combo make more power than using the stock cam?
So, im wondering if say an LG X3 cam or a QM600 would work with a Centrifugal SC. I understand its not the best option, but will the combo make more power than using the stock cam?
#2
Team Owner
Well, Since I dont want to go through the process of buying and re-installing a blower cam on my car, at least for the time being.
So, im wondering if say an LG X3 cam or a QM600 would work with a Centrifugal SC. I understand its not the best option, but will the combo make more power than using the stock cam?
So, im wondering if say an LG X3 cam or a QM600 would work with a Centrifugal SC. I understand its not the best option, but will the combo make more power than using the stock cam?
For the best deal I've seen buy an A&A kit during Andys 4 hour sale monday, You'll be glad you did.
#3
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Well, Since I dont want to go through the process of buying and re-installing a blower cam on my car, at least for the time being.
So, im wondering if say an LG X3 cam or a QM600 would work with a Centrifugal SC. I understand its not the best option, but will the combo make more power than using the stock cam?
So, im wondering if say an LG X3 cam or a QM600 would work with a Centrifugal SC. I understand its not the best option, but will the combo make more power than using the stock cam?
#4
Melting Slicks
I'm not sure what the specs are on those particular cams (I believe the X3 is a pretty big stick isn't it?) but if they are high in valve overlap, they're going to be counterproductive on a boost car. Overlap costs you boost by allowing pressurized air to escape out the exhaust valves while the intake valves are still allowing it to enter the combustion chambers.
#5
Has anyone ever proved the "lot's" of overlap doesn't work?
Well I'd like to "disprove it"
Here's a cam with over 80 degrees of overlap, 238/248 on a 112
Notice this graph only goes up to 5500 rpm-just image the numbers at 6500. Now look at the torque-this a 402 and through a auto on pump gas. This is with a tiny little F1A blower amking 17 psi at 6800 rpm. Look at the torque at 3000, 3500 and 4000 and look up other dyno graphs of centri blowers-compare the torque?
Here is a cam-very similar to a G5X2(232/240)-stock short-12psi-I guess it doesn't make much power either? BTW-this is with LS1 heads and a LS1 intake.
Here's another car, he has an aggressive N/A cam-only 12 inches of vacuum at idle, he was told he won't make anypower with a blower with that cam. This is a A&A kit, stock short 8 psi, no meth. This thing will pick up 50 rwhp and 50 rwtq when he ups the boost!
There must be alot money being made in "blower cam" market-man it's too bad I don't buy into it.
Well I'd like to "disprove it"
Here's a cam with over 80 degrees of overlap, 238/248 on a 112
Notice this graph only goes up to 5500 rpm-just image the numbers at 6500. Now look at the torque-this a 402 and through a auto on pump gas. This is with a tiny little F1A blower amking 17 psi at 6800 rpm. Look at the torque at 3000, 3500 and 4000 and look up other dyno graphs of centri blowers-compare the torque?
Here is a cam-very similar to a G5X2(232/240)-stock short-12psi-I guess it doesn't make much power either? BTW-this is with LS1 heads and a LS1 intake.
Here's another car, he has an aggressive N/A cam-only 12 inches of vacuum at idle, he was told he won't make anypower with a blower with that cam. This is a A&A kit, stock short 8 psi, no meth. This thing will pick up 50 rwhp and 50 rwtq when he ups the boost!
There must be alot money being made in "blower cam" market-man it's too bad I don't buy into it.
#6
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I'm running a reverse split 232/228 114 LSA with my P1SC Procharger. Everyone told me not to do it because it's a "turbo cam." I think I'm in good shape with only 7 psi.
#8
Melting Slicks
Has anyone ever proved the "lot's" of overlap doesn't work?
Well I'd like to "disprove it"
Here's a cam with over 80 degrees of overlap, 238/248 on a 112
Notice this graph only goes up to 5500 rpm-just image the numbers at 6500. Now look at the torque-this a 402 and through a auto on pump gas. This is with a tiny little F1A blower amking 17 psi at 6800 rpm. Look at the torque at 3000, 3500 and 4000 and look up other dyno graphs of centri blowers-compare the torque?
Here is a cam-very similar to a G5X2(232/240)-stock short-12psi-I guess it doesn't make much power either? BTW-this is with LS1 heads and a LS1 intake.
Here's another car, he has an aggressive N/A cam-only 12 inches of vacuum at idle, he was told he won't make anypower with a blower with that cam. This is a A&A kit, stock short 8 psi, no meth. This thing will pick up 50 rwhp and 50 rwtq when he ups the boost!
There must be alot money being made in "blower cam" market-man it's too bad I don't buy into it.
Well I'd like to "disprove it"
Here's a cam with over 80 degrees of overlap, 238/248 on a 112
Notice this graph only goes up to 5500 rpm-just image the numbers at 6500. Now look at the torque-this a 402 and through a auto on pump gas. This is with a tiny little F1A blower amking 17 psi at 6800 rpm. Look at the torque at 3000, 3500 and 4000 and look up other dyno graphs of centri blowers-compare the torque?
Here is a cam-very similar to a G5X2(232/240)-stock short-12psi-I guess it doesn't make much power either? BTW-this is with LS1 heads and a LS1 intake.
Here's another car, he has an aggressive N/A cam-only 12 inches of vacuum at idle, he was told he won't make anypower with a blower with that cam. This is a A&A kit, stock short 8 psi, no meth. This thing will pick up 50 rwhp and 50 rwtq when he ups the boost!
There must be alot money being made in "blower cam" market-man it's too bad I don't buy into it.
The other two cars make good power too, but I would like to see back to back results with the N/A cams vs. purpose-ground FI cams....I think there's power left on the table...
The physics of it seem irrefutable to me. A boost leak somewhere in the intake tract is going to cost you power isn't it? what's a big overlap cam other than a boost leak right in the combustion chamber?
I'm sure you have a bunch more experience with FI than I do, so don't take this to be argumentative...I just like conversations that might teach me something.
Last edited by JSB LS3; 12-26-2008 at 12:59 AM.
#9
I didn't say a big cam with lots of overlap wouldn't make any power...I just said it wasn't the best choice for a blower car. I'm not at all surprised an F1A (most people don't consider that a "tiny little" blower ) huffing 17 pounds makes a train load of power with ANY cam...that's a pretty beastly combination.
The other two cars make good power too, but I would like to see back to back results with the N/A cams vs. purpose-ground FI cams....I think there's power left on the table...
The physics of it seem irrefutable to me. A boost leak somewhere in the intake tract is going to cost you power isn't it? what's a big overlap cam other than a boost leak right in the combustion chamber?
I'm sure you have a bunch more experience with FI than I do, so don't take this to be argumentative...I just like conversations that might teach me something.
The other two cars make good power too, but I would like to see back to back results with the N/A cams vs. purpose-ground FI cams....I think there's power left on the table...
The physics of it seem irrefutable to me. A boost leak somewhere in the intake tract is going to cost you power isn't it? what's a big overlap cam other than a boost leak right in the combustion chamber?
I'm sure you have a bunch more experience with FI than I do, so don't take this to be argumentative...I just like conversations that might teach me something.
F1A, is a tiny blower-it's the same size physically as a D1SC-hold it next to a YSi or Novi 2000.
Take the first graph, it's a F1A, it's a 402, it's got AFR heads but it' still breathing through a LS6 intake and stock 75mm TB-compare that graph at each point to some of the "other" big power blower graphs with "blower cams" and see how they compare-don't forget this is through a auto as well.
Last edited by Arun@ChampionMotors; 12-26-2008 at 01:36 AM.
#11
Race Director
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St. Jude Donor '15
Dudeeee
#12
#13
Le Mans Master
As long as you like the operating characteristics of the cam, go for it. So, you can make 700 hp with a rowdy n/a cam at 10 psi or change to a milder/better mannered boost cam, and make the same power with a little more boost with no other changes. Whatever blows your dress up...your choice.
#14
As long as you like the operating characteristics of the cam, go for it. So, you can make 700 hp with a rowdy n/a cam at 10 psi or change to a milder/better mannered boost cam, and make the same power with a little more boost with no other changes. Whatever blows your dress up...your choice.
#15
Burning Brakes
The whole big cam thing is a big Mith. I made 837whp 6psi with the LG7XX cam which has 40* overlap BTW same setup with headers made 623 all motor.
Last edited by C6 Curtis; 10-15-2015 at 07:01 PM.