Understanding cam choices. Please advise
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Understanding cam choices. Please advise
I've been reading the threads and from what I understand is,
1. Stock turbo should not really being using 272's or bigger since it would br too big for the turbo.
2. bigger turbos such as gt3037, gt35r, etc... can utilize the 272's or bigger so it's ok to put bigger cams.
3. Bigger the cams the rougher the idle.
Then here's my question,
If I wanted smoother idle would I go with a 264/272? Or how about if I wanted better spool up, would I want 272's? I currently have a GT35R on the Evo and can't decide which cams to choose.
Any advice would be appreciated..
1. Stock turbo should not really being using 272's or bigger since it would br too big for the turbo.
2. bigger turbos such as gt3037, gt35r, etc... can utilize the 272's or bigger so it's ok to put bigger cams.
3. Bigger the cams the rougher the idle.
Then here's my question,
If I wanted smoother idle would I go with a 264/272? Or how about if I wanted better spool up, would I want 272's? I currently have a GT35R on the Evo and can't decide which cams to choose.
Any advice would be appreciated..
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It will depend on your tuner, you can get most of these big cams to idle like stock.
I have aem ems and 272/272 stock turbo, my car idles like a stock car.
Pick the cams you like to run with for your desired power. Obviously you will tune the car,
Idle is up to the tuner.( IF they know their stuff, they know how to get perfect idle)
I have aem ems and 272/272 stock turbo, my car idles like a stock car.
Pick the cams you like to run with for your desired power. Obviously you will tune the car,
Idle is up to the tuner.( IF they know their stuff, they know how to get perfect idle)
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I don't have any opposition with 272's or 280's just worried about idle and spool up. I'm getting AEM EMS next week. So the with the EMS, idle shouldn't be a problem as long as the tuning is correct? How about spool up? will the 272's or 280's increase or decrease lag?
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I don't have any opposition with 272's or 280's just worried about idle and spool up. I'm getting AEM EMS next week. So the with the EMS, idle shouldn't be a problem as long as the tuning is correct? How about spool up? will the 272's or 280's increase or decrease lag?
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Originally Posted by jxn evo 8
arn't the 272's the way to go if you want to a mix between strip and street
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Here's a list of what I have.
ATP's GT35R turbo kit
750CC injectors
255 LPH pump
Greddy profec B II
SAFC II
3" Turbo back exhaust no cat
My car with these mods gets full boost @ around 4800rpm or under. What I like to achieve is full spool @ 4000 rpm. Now what I'm upgrading is
AEM EMS
Tubular headers
Cams
I know the 280's will give me the most top end power, but what cams or cam combination will give me best spool up.
ATP's GT35R turbo kit
750CC injectors
255 LPH pump
Greddy profec B II
SAFC II
3" Turbo back exhaust no cat
My car with these mods gets full boost @ around 4800rpm or under. What I like to achieve is full spool @ 4000 rpm. Now what I'm upgrading is
AEM EMS
Tubular headers
Cams
I know the 280's will give me the most top end power, but what cams or cam combination will give me best spool up.
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Originally Posted by neonhero
I've been reading the threads and from what I understand is,
1. Stock turbo should not really being using 272's or bigger since it would br too big for the turbo.
1. Stock turbo should not really being using 272's or bigger since it would br too big for the turbo.
Originally Posted by neonhero
2. bigger turbos such as gt3037, gt35r, etc... can utilize the 272's or bigger so it's ok to put bigger cams.
Originally Posted by neonhero
3. Bigger the cams the rougher the idle.
Originally Posted by neonhero
Then here's my question,
If I wanted smoother idle would I go with a 264/272? Or how about if I wanted better spool up, would I want 272's? I currently have a GT35R on the Evo and can't decide which cams to choose.
Any advice would be appreciated..
If I wanted smoother idle would I go with a 264/272? Or how about if I wanted better spool up, would I want 272's? I currently have a GT35R on the Evo and can't decide which cams to choose.
Any advice would be appreciated..
For a big turbo like the 35r, assuming a stock block (i.e. stock redline), I'd probably go with 264s if you want good spoolup, or 272s if you're willing to give up 100-200rpms of spool for better topend. However the 272s may be trickier to dial in, if you want to minimize the amount of spool you're willing to lose. The setting I ran with my 272s (-4/-1) sacrifices some additional spool for better idle and good topend. Of course, you could just be like "f**k it!", I'm going ***** out ... in which case HKS 280s at +2/0 would be the choice.
l8r)
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well with the gt35, you're never going to have "great" spool up, and I think that the cams that would give you the "best" would be the lower #s, but then that also is working against the purpose of the big turbo, which is higher end power. I think... Someone else probably knows much better...
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Originally Posted by neonhero
Here's a list of what I have.
ATP's GT35R turbo kit
750CC injectors
255 LPH pump
Greddy profec B II
SAFC II
3" Turbo back exhaust no cat
My car with these mods gets full boost @ around 4800rpm or under. What I like to achieve is full spool @ 4000 rpm. Now what I'm upgrading is
AEM EMS
Tubular headers
Cams
I know the 280's will give me the most top end power, but what cams or cam combination will give me best spool up.
ATP's GT35R turbo kit
750CC injectors
255 LPH pump
Greddy profec B II
SAFC II
3" Turbo back exhaust no cat
My car with these mods gets full boost @ around 4800rpm or under. What I like to achieve is full spool @ 4000 rpm. Now what I'm upgrading is
AEM EMS
Tubular headers
Cams
I know the 280's will give me the most top end power, but what cams or cam combination will give me best spool up.
- AEM ... +200 rpm spool
- Tubular header ... + 200 rpm spool
- cams ... +0 to -200 rpm spool
Are you running a pump gas or racegas tune?
l8r)
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Originally Posted by neonhero
I've been reading the threads and from what I understand is,
1. Stock turbo should not really being using 272's or bigger since it would br too big for the turbo.
2. bigger turbos such as gt3037, gt35r, etc... can utilize the 272's or bigger so it's ok to put bigger cams.
3. Bigger the cams the rougher the idle.
Then here's my question,
If I wanted smoother idle would I go with a 264/272? Or how about if I wanted better spool up, would I want 272's? I currently have a GT35R on the Evo and can't decide which cams to choose.
Any advice would be appreciated..
1. Stock turbo should not really being using 272's or bigger since it would br too big for the turbo.
2. bigger turbos such as gt3037, gt35r, etc... can utilize the 272's or bigger so it's ok to put bigger cams.
3. Bigger the cams the rougher the idle.
Then here's my question,
If I wanted smoother idle would I go with a 264/272? Or how about if I wanted better spool up, would I want 272's? I currently have a GT35R on the Evo and can't decide which cams to choose.
Any advice would be appreciated..
280s indeed add power to the STOCK TURBO. David Buschur has proven so, need I say more? Ill be adding 280s with cam gears soon.