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    Thread: best cam for Neuspeed Supercharger w/ 2.4" pulley

    1. Member vacuumnoise's Avatar
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      03-29-2012 03:22 PM #1
      I plan on going with a NS SC with 2.4" pulley (which puts the psi around 13psi if I am correct?) I currently have a TT 260 cam with AEG lifters in my ABA

      is it really worth it to upgrade my valvetrain and go with the AT 270 cam?

      would just like to know your thoughts...

      I also have an OBX header and hi flo 42DD cat installed with a TT exhaust.

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    2. 03-29-2012 04:14 PM #2
      Long answer: yes
      Short answer: yes

      lol...just kidding. Well, not really.

      Think of it in terms of an N/A motor. Do you get more top end power out of a 270 than a 260? Yes, about 8whp on a dyno. Not to mention a whole lot more torque under the curve. Not much, but its NA, and thats on a stock head. But add boost....Booya.

      Which 260, btw? The asymmetrical 260/256 or the symmetrical 260? The symmetrical 260 has the same 0* overlap @ 50thou valve lift as the 270.

    3. Junior Member ELiT3's Avatar
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      03-29-2012 04:55 PM #3
      Idk much about cams, but TT has the 268/260 made for cars with FI.
      "Remember Professionals built the Titanic, Amateurs built the Ark"

    4. 03-29-2012 06:37 PM #4
      Good cam, but expensive new, and rare used. You will have the same results with the 270. And those are a dime a dozen used...and cheap!

    5. Member vacuumnoise's Avatar
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      03-29-2012 06:37 PM #5
      Quote Originally Posted by 911_fan View Post
      Long answer: yes
      Short answer: yes

      lol...just kidding. Well, not really.

      Think of it in terms of an N/A motor. Do you get more top end power out of a 270 than a 260? Yes, about 8whp on a dyno. Not to mention a whole lot more torque under the curve. Not much, but its NA, and thats on a stock head. But add boost....Booya.

      Which 260, btw? The asymmetrical 260/256 or the symmetrical 260? The symmetrical 260 has the same 0* overlap @ 50thou valve lift as the 270.
      i have the symmetrical TT 260 cam
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    6. Banned Hurt's Avatar
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      03-29-2012 09:22 PM #6
      Quote Originally Posted by vacuumnoise View Post
      i have the symmetrical TT 260 cam
      Personally, I'd go with the 268/260 TT cam. I ran one in an old supercharged mk2 of mine, and the powerband was great, no loss of tq, etc. They cost 30 bucks more than an AutoTech 270*, though. I think the Autotech might make a few more ponies. Not sure, never dyno'd a FI car with different cam's back to back. I have had the Autotech 270 in N/A cars, and I like them alot. Good powerband, good idle, etc. But the 268/260 is fine, too. It's really up to you.

    7. Member Fast VW's Avatar
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      03-29-2012 09:38 PM #7
      I have:

      Neuspeed supercharger w 2.4" pulley
      Snow Performance stage 3 MAX-MPG W/M injection
      C2 30# tune and injectors
      Autotech SS catback exhaust
      AT270 cam

      I highly recommend the AT270 cam.

    8. Member vacuumnoise's Avatar
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      03-29-2012 09:46 PM #8
      Quote Originally Posted by Hurt View Post
      Personally, I'd go with the 268/260 TT cam. I ran one in an old supercharged mk2 of mine, and the powerband was great, no loss of tq, etc. They cost 30 bucks more than an AutoTech 270*, though. I think the Autotech might make a few more ponies. Not sure, never dyno'd a FI car with different cam's back to back. I have had the Autotech 270 in N/A cars, and I like them alot. Good powerband, good idle, etc. But the 268/260 is fine, too. It's really up to you.
      hmm yeah, its just if I was going to run the 270 cam and change the valvetrain I think I might just rebuild a seperate head, port etc. And just swap it out one whole day...

      my goal is 150whp, if I can make that supercharged with the 260 cam I would probobaly just keep it in there...
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    9. Banned Hurt's Avatar
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      03-29-2012 11:41 PM #9
      Quote Originally Posted by vacuumnoise View Post
      hmm yeah, its just if I was going to run the 270 cam and change the valvetrain I think I might just rebuild a seperate head, port etc. And just swap it out one whole day...

      my goal is 150whp, if I can make that supercharged with the 260 cam I would probobaly just keep it in there...
      Neuspeed S/C kit completely stock pushes 135whp. The smaller pulley is good for about 1.5 extra PSI. You have exhaust, and a header, too.. So I'd say you're at about 145whp or so. Add a 268/260* cam (You don't have to change the valve springs with this cam, because the lift is only .432"! *max lift on obd2 springs is .433"*). Add a cold air intake and you should see 150whp with the 268/260.
      Last edited by Hurt; 03-29-2012 at 11:46 PM.

    10. 03-30-2012 07:48 AM #10
      Quote Originally Posted by Hurt View Post
      max lift on obd2 springs is .433"
      Never seen anyone claim that before.

    11. Member vacuumnoise's Avatar
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      03-30-2012 03:04 PM #11
      yeh i know people have ran the 268 cam on stock springs, but i just dont trust it...
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      04-06-2012 09:09 PM #12
      268/260 we developed this grind back in the mid 90's for the supercharged 8v's, you cant beat it!
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    13. 04-06-2012 09:37 PM #13
      Can you elaborate on that? Explain where you came up with the profile choice?

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      04-07-2012 06:49 PM #14
      Quote Originally Posted by 911_fan View Post
      Can you elaborate on that? Explain where you came up with the profile choice?
      Sure back in the mid 90's when we developed the Stage III and IV power kits for the 8v G60 we used the 260 for Stage III. A gentleman by the name of Lynn, we called him "auto von farvergnugen" was working on a split pattern cam, the 268/260. lynn is truly an 8v boosted VW pioneer and VW guru. I think he is in his mid 50's now. We had a specialty cam company in Wa do several grinds. Lynn was also the man that invented the ISV re-route for the G60. Neuspeed got a look at one of these at a So Cal car show and put this into production on there power kit. We also started mfg. this part for our pwr. kits and we had the 268/260 put into production. This cam I believe has been in all of the highest hp 8v engines out there. I believe this car in the video below is a world record holder for the fasted 1/4 mile time in the world running a stock G60 engine and management. The car is running our 268/260 cam, stock G60 8v engine, stock engine with stock G60 digifant injection system. The fasted time was 11.7 sec 1/4 mile. I can assure you this is a great cam for the 8v and is totally street-able

      Last edited by JBETZ; 04-08-2012 at 12:13 AM.
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    15. 04-07-2012 07:02 PM #15
      Thanks for the history lesson, John! I ran this in an NA motor for a while, and it felt great. Can only imagine in a boosted car.

    16. Member vacuumnoise's Avatar
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      04-07-2012 07:09 PM #16
      and I can run the 268/260 cam with stock springs

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      04-07-2012 07:13 PM #17
      Quote Originally Posted by vacuumnoise View Post
      and I can run the 268/260 cam with stock springs
      yes you can, np. if you run hd springs you will get some more power at peak rpm...
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    18. Member Fast VW's Avatar
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      04-07-2012 09:46 PM #18
      So would you recommend this cam over the AT270? And if so why, specifically?

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      04-07-2012 11:59 PM #19
      Quote Originally Posted by Fast VW View Post
      So would you recommend this cam over the AT270? And if so why, specifically?
      A straight 270 is an NA grind... I would choose this for a street NA engine. The 268/260 is a split pattern cam with a narrow over lap. Takes in a big gulp of air...holds it while it fully boost in the chamber and bang! Basically an NA grind would let the exhaust valves open sooner and let the charge flow right out. A boost cam will hold the exhaust valve closed for a brief moment longer....this will keep the boost sealed in the combustion charge. If you run stock cams with boost the loss usually isn't too bad. You can also run an adjustable cam sprocket and retard the cam timing a bit to keep the boost in the charge. If you run a performance NA cam with boost you can loose some psi and quite a bit of power. I've seen guys loose over 100 hp on turbo 16v's running the wrong cams. Also seen people loose 3-5+ psi from having their cam timing off.
      Last edited by JBETZ; 04-08-2012 at 12:02 AM.
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      04-08-2012 01:40 AM #20
      Whats everyone's opinion on running the TT276 on a boosted application. I have a new project im building, 83.5mm bore JE pistons, IE rods, etc and then I was just going to put my ported head and TT276 on it. Is there going to be a big enough loss in power from running my cam that I should think about investing in a 268/260?

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      04-08-2012 02:02 AM #21
      Quote Originally Posted by 02vwgolf View Post
      Whats everyone's opinion on running the TT276 on a boosted application. I have a new project im building, 83.5mm bore JE pistons, IE rods, etc and then I was just going to put my ported head and TT276 on it. Is there going to be a big enough loss in power from running my cam that I should think about investing in a 268/260?
      That's too much cam for boost... bigger is definitely not better with boost. I'd say the stock cam with and adjustable sprocket would be better. just my two cents
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    22. 04-08-2012 09:54 AM #22
      Just wanted to comment...

      Both the 270 & 268/260 are good for boost. They both have a high LSA, ant both have no overlap at a 50thou valve lift. But following open/close timing, the 268/260 will favor a stronger low end, while the 270 would favor a slightly better top end.

      And I sorta disagree about bigger not being better. It's more about the lobe center lines. Schlick has had a beefy 276 FI cam for years. Techtonics recently came out with an FI-friendly 276. But it's important to keep in mind that even though these bigger cams have wide lobe centers, there is still going to be low end blow-by because of valve overlap. These bigger cams are more for race/extreme top end applications. The smaller 260-270 degree cams are more than adequate for the street.

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      04-08-2012 10:00 AM #23
      Quote Originally Posted by 911_fan View Post
      They both have a high LSA, ant both have no overlap at a 50thou valve lift. But following open/close timing, the 268/260 will favor a stronger low end, while the 270 would favor a slightly better top end.
      I was just going to say that... just not with those exact measurements.

      Plus wouldn't the higher lift of the AT270 allow for better flow?

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      04-08-2012 10:44 AM #24
      Quote Originally Posted by 911_fan View Post
      Just wanted to comment...

      Both the 270 & 268/260 are good for boost. They both have a high LSA, ant both have no overlap at a 50thou valve lift. But following open/close timing, the 268/260 will favor a stronger low end, while the 270 would favor a slightly better top end.

      And I sorta disagree about bigger not being better. It's more about the lobe center lines. Schlick has had a beefy 276 FI cam for years. Techtonics recently came out with an FI-friendly 276. But it's important to keep in mind that even though these bigger cams have wide lobe centers, there is still going to be low end blow-by because of valve overlap. These bigger cams are more for race/extreme top end applications. The smaller 260-270 degree cams are more than adequate for the street.
      So think I should sell it and go down a size or go for it? rest of the build details are overall 8:5:1 compression, eqaul length ramhorn manifold, 830cc injectors with Uni tune, and an hx35. Im pretty much copying a more famous 8vt members build

    25. 04-08-2012 01:11 PM #25
      An NA 276 with a compression that low, plus a BT is going to give zero low end torque. Have fun driving that around town.

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      04-08-2012 10:21 PM #26
      Quote Originally Posted by 911_fan View Post
      An NA 276 with a compression that low, plus a BT is going to give zero low end torque. Have fun driving that around town.
      Thats why I was asking your opinion 911... im going to start looking at ordering a 268/260 i guess

    27. 04-10-2012 11:03 AM #27
      268/260 is a good cam, I've also had the 270 and it was very similar to the 268/260. The 268/260 gave me great tq from 2500-5500 rpm, the 270 from 3300 to 6000.
      I now have a 272/270 schrick cam that's great the lift is 449 and that's all I can remember lol, but I get power from about 3500 to 6800 and still have that can in. I'm running 17-18 psi daily
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    28. 04-10-2012 11:04 AM #28
      And btw none of these cams are worth a damn without dual springs
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      04-10-2012 06:35 PM #29
      Quote Originally Posted by cifdig View Post
      268/260 is a good cam, I've also had the 270 and it was very similar to the 268/260. The 268/260 gave me great tq from 2500-5500 rpm, the 270 from 3300 to 6000.
      I now have a 272/270 schrick cam that's great the lift is 449 and that's all I can remember lol, but I get power from about 3500 to 6800 and still have that can in. I'm running 17-18 psi daily
      Quote Originally Posted by cifdig View Post
      And btw none of these cams are worth a damn without dual springs
      Thank you for the advice, think im going to go with the 268/260, and no worries already have the upgraded TT HD valve springs from when I installed the 276 if thats what you mean when you say "dual springs"

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      04-19-2012 03:37 PM #30
      I dont mean to bump this from the dead but i have an AT260 cam with my neuspeed blower (on a mk4) and its pretty solid. At one point i wanted to upgrade to a TT FI cam but i learned that the TT FI cam and the AT260 are basically the same thing anyway. From what i understand a bigger cam isnt always better for a FI car. You dont want huge overlap losing some of your power from the blower.
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    31. 04-19-2012 04:17 PM #31
      Autotech
      Advertised duration: 260/256*
      Advertised lift: .421"/.409"

      Techtonics
      Advertised duration: 268*/260*
      Advertised lift: .432"/.432"

      not the same by a long shot.

    32. Member vacuumnoise's Avatar
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      04-19-2012 07:20 PM #32
      Quote Originally Posted by 911_fan View Post
      Autotech
      Advertised duration: 260/256*
      Advertised lift: .421"/.409"

      Techtonics
      Advertised duration: 268*/260*
      Advertised lift: .432"/.432"

      not the same by a long shot.
      yeh and also I dont really think the 268/260 cam is really that big
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    33. 04-19-2012 09:58 PM #33
      It's a boost cam, doesn't need to be big.

    34. Member vacuumnoise's Avatar
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      04-20-2012 12:17 AM #34
      exactly
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      04-20-2012 01:23 AM #35
      Quote Originally Posted by vacuumnoise View Post
      exactly

      triple that
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