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Old 09-12-2007, 08:40 PM   #1
drewwrxrogers
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Default What are the best cams for 35r sti?

Hey guys, Im trying to decide what cams to go with on my gt35r .82 setup on my 04sti. What do you think would be best and why. Keep in mind that Im looking at around 550+whp.
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Old 09-12-2007, 08:53 PM   #2
XS_WRX
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what are you looking for? response or top end?
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Old 09-12-2007, 09:06 PM   #3
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Well I think the .82 turbo and valve work should cover me up top, but a little help with the response would be nice. I like on the fly power.
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Old 09-13-2007, 10:18 AM   #4
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If you want better response and a 35R....good luck.

stock cams will give you the best response.
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Old 09-13-2007, 10:33 AM   #5
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I miss the crazy midrange torque that the stock cams + 35r gave. I have very mixed feelings about upgraded cams. Either way you should take the opportunity and upgrade the valvetrain to reduce the chance of valve float.
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Old 09-13-2007, 10:50 AM   #6
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Jay,
What cams are you running with your sti gt35r? I have a 30r and am considering a cam upgrade. What are your cam specs and how did the power band change?

Jonathon
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Old 09-13-2007, 11:15 AM   #7
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Quote:
Originally Posted by SloRice View Post
If you want better response and a 35R....good luck.

stock cams will give you the best response.

What he said!
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Old 09-13-2007, 05:53 PM   #8
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I am staying with stock cams, just changing the valve springs and retainers.
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Old 09-13-2007, 06:54 PM   #9
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Quote:
Originally Posted by SloRice View Post
If you want better response and a 35R....good luck.

stock cams will give you the best response.
Higher compression and twin scroll setup would help significantly... but I guess you won't get that from cams.
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Old 09-13-2007, 09:40 PM   #10
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Quote:
Originally Posted by TAPOUT View Post
I am staying with stock cams, just changing the valve springs and retainers.
why? is your non-cammed 35r still making power past 7k?...I'm betting the torque curve is already falling off....could be benificial to spin 1&2 a bit higher for lag reasons...
otherwise the springs are just a loss of hp
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Old 09-13-2007, 11:39 PM   #11
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Quote:
Originally Posted by Homemade WRX View Post
why? is your non-cammed 35r still making power past 7k?...I'm betting the torque curve is already falling off....could be benificial to spin 1&2 a bit higher for lag reasons...
otherwise the springs are just a loss of hp
Not built yet....I do plan to try to run a little above 7K with the longer 07 gears to see how far I can take it in 4th before dropping into 5th at the end of the track. I however, am now looking at a GT3082 instead of the GT35. So I must take my sorry butt out of the conversation.
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Old 09-14-2007, 12:07 AM   #12
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Love my Cosworth cams. Pulling strong well past 7000 rpm is FTW!
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Old 09-14-2007, 12:05 PM   #13
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I'd love to NOT have WTQ drop like a rock after 6k (even with a 35r)

even some small cams 264's? should be decent (hold a bit more torque) without loosing much on the low end at all. *pulls out of ass*
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Old 09-14-2007, 05:32 PM   #14
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Originally Posted by Homemade WRX View Post
why? is your non-cammed 35r still making power past 7k?...I'm betting the torque curve is already falling off....could be benificial to spin 1&2 a bit higher for lag reasons...
otherwise the springs are just a loss of hp
My .82 35R STi doesn't start loosing torque until 5.5-6k. That is fine with me to avoid spending the money on cams. Toss on the meth map and weeeeeeeeee!
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Old 09-14-2007, 05:35 PM   #15
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Not built yet....I do plan to try to run a little above 7K with the longer 07 gears to see how far I can take it in 4th before dropping into 5th at the end of the track. I however, am now looking at a GT3082 instead of the GT35. So I must take my sorry butt out of the conversation.
Dude, go 35R or go home. Don't use these hybrid wonky ass turbos,
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Old 09-14-2007, 06:22 PM   #16
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Quote:
Originally Posted by Remnex View Post
My .82 35R STi doesn't start loosing torque until 5.5-6k. That is fine with me to avoid spending the money on cams. Toss on the meth map and weeeeeeeeee!
With the cosworth 278/274 cams, my car feels like torque doesn't hit till 5.5-6k. With a 35r something halfway between these cams and the stockers would probably be ideal.
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Old 09-14-2007, 07:59 PM   #17
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Quote:
Originally Posted by jays05 View Post
With the cosworth 278/274 cams, my car feels like torque doesn't hit till 5.5-6k. With a 35r something halfway between these cams and the stockers would probably be ideal.

With those cams, it does feel like the TQ comes in late... On the dyno though, you can see what is happening. It will come in a little later, smoother, and carry further. It just gives you this false sense of lost low end with minimal mid-top end.. Its there though.. Big time.. Reving out the motor, shifting and falling back into a nice Flat TQ band makes a huge difference. You just dont really "feel" it...
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Old 09-14-2007, 11:08 PM   #18
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See first post for A GT30R with Kelford 272 Intake and 264 Exhaust cams

http://forums.nasioc.com/forums/show....php?t=1063644

Alot of the TQ feeling is down to when boost kicks in, IMO. The 35R spools about 500-1000 rpm later than the 30R which is why it feels like the TQ hits at 4.5K-5k for 35R powered cars.

If you want low end TQ the cams can only do so much, boost low down is what you want. Bigger cams will help hold that TQ through the power band.
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Old 09-14-2007, 11:53 PM   #19
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Quote:
Originally Posted by mick_the_ginge View Post
See first post for A GT30R with Kelford 272 Intake and 264 Exhaust cams

http://forums.nasioc.com/forums/show....php?t=1063644

Alot of the TQ feeling is down to when boost kicks in, IMO. The 35R spools about 500-1000 rpm later than the 30R which is why it feels like the TQ hits at 4.5K-5k for 35R powered cars.

If you want low end TQ the cams can only do so much, boost low down is what you want. Bigger cams will help hold that TQ through the power band.
for some reason, I was thinking the opposite. 264 intake (use boost), 272 exhaust (get that **** out of the cylinder/head)
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Old 09-15-2007, 12:19 AM   #20
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Quote:
Originally Posted by Remnex View Post
My .82 35R STi doesn't start loosing torque until 5.5-6k. That is fine with me to avoid spending the money on cams. Toss on the meth map and weeeeeeeeee!
have a graph?...when does peak torque occur?
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Old 09-15-2007, 10:27 AM   #21
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272 to get the air in, 264 for velocity out
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Old 09-15-2007, 10:33 AM   #22
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well, a 272 and 264 combo or similar big-intake/small-exhaust really only help to spool the turbo...they hinder the torque curve once spooled as you start choking the exhaust flow in respect to the intake...personally I would rather deal with lag and have my power while in gear and in my powerband. When driving my car I will only see lag if I'm starting from a roll or a soft launch...the rest of the time I'm in the powerband.
Just my $0.02
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Old 09-17-2007, 06:25 PM   #23
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a set of 264's would be ideal if you are looking for huge top end improvements to power with minimal losses in the lower RPM ranges
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Old 09-17-2007, 11:49 PM   #24
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OKay, for those of you that said the stock cams are fine, good for you. You obviously did not have the money at the time of the build or you probably would have installed them. Or maybe you just didnt understand something. Why in the hell would you have a valve job and valve springs, that cost a ****load of money, if you stop making power at 6k??
The cams, regardless of lag, will allow me to make power all the way to the point where I must shift, in my case 8000-8200rpm. For those of you who dont spool til 4500 and have to shift at 6800, I can understand why you wouldnt like the "lag". But when you come on boost at 4300 and dont redline til 8200, there is a lot of room to feel the power that is being made.
I think its funny to hear guys with smaller turbos try to chime in because they talk about Lag so much and how your not boosting til 4500. But what they dont understand is that we are making more hp and TQ before we even boost then they are at full boost. Then when we do hit full boost its a whole other car!
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Old 09-18-2007, 12:06 AM   #25
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You originally asked for "more response". Now you are saying you don't care about the lag. Make up your mind.
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