Thread: Turbo cam

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  1. #1 Turbo cam 
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    I've been doing quite a bit of searching and have found a lot of good information so far, but I think I'll reach a conclusion by just asking it on a new thread..

    My goal is ~500WHP on E85, which I've read is pretty easily attainable. Trans is to come later. Basically everything I've read says that the XP cam makes a great turbo cam if you've already done it, but if you are going to have access to the cam, you may as well go turbo cam. I was hoping for something like ST2 but it doesn't look like those are easy to get anymore and pop up rarely. Don't wanna do a ST5 or anything radical that would require head work.

    Any good suggestions?
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  2. #2 Re: Turbo cam 
    GrandPrix Junkie SgtMarshal's Avatar
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    Have you read what zzp says about the stage 5 cam?
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  3. #3 Re: Turbo cam 
    GXP Level Member GTPpower's Avatar
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    This is going to depend on which turbo you pick much more than your cam.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  4. #4 Re: Turbo cam 
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    Have you read what zzp says about the stage 5 cam?

    As in the product description? If so then yes

    This is going to depend on which turbo you pick much more than your cam.

    Right now it's just the Z7 kit
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  5. #5 Re: Turbo cam 
    GXP Level Member GTPpower's Avatar
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    With what turbo?


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  6. #6 Re: Turbo cam 
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    precision 6262
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  7. #7 Re: Turbo cam 
    GXP Level Member GTPpower's Avatar
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    Ok. The st5 doesn't require any head work, but it does require a few other things that the others don't. Do you have the xp cam currently?


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  8. #8 Re: Turbo cam 
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    I don't currently have the XP cam, but it's an option. I just know the XP cam is the most popular and easy to get. Right now I have a VS cam from when I did a SC build on this motor. My plans are to do a double roller and 150# springs. I suppose looking at that product description again, the only modification is machining the valve guides to open up the spring seats. Basically after gathering the info, I was going to do

    New oil pump with machined cover
    150# springs (get the heads machined to allow fitment)
    Double roller (not sure if the correct chamfer is default now, but planned to get the crank sprocket matched correctly)
    Stock lifters (wanted to do LS7's just as a "new" lifter but the consensus seems to be to not replace them if they're not broken)
    Cam
    Stock pushrods
    Stock rockers
    M90 blockoff for the intake

    I guess the only other thing is, based on that description it doesn't sound like a mild cam, i.e. "Hard to tune to"
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  9. #9 Re: Turbo cam 
    GXP Level Member GTPpower's Avatar
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    Depending on the type of springs you get, you don't need to machine the spring seat.

    You should run Vinton valve seals, and milled Lsx style retainers.

    Then your double roller with machined pump cover.

    You're good to throw in the st5 then.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  10. #10 Re: Turbo cam 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    I would inspect your lifters first of course before tossing them back in the engine with a new cam.

    They are only $80-90 on ebay if you do decide to get new ones, not a huge cost to know they are new.

    SMGPFC Member #1
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  11. #11 Re: Turbo cam 
    SE Level Member SlowFiero's Avatar
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    I made 580 on a mustang dyno on a ST1 with the 6262. 10.00 at 138 at 3130 lbs is over 600 whp on dynojet.

    Zzp will custom grind you anything, call them up and ask for a ST2. I personally wouldn't go any bigger than the ST2 if your running stock heads and at 62mm turbo, it's the cam I wish I would have gotten. Need more turbine wheel and compressor and more head flow for the bigger cams.
    Billet 6262 T3 turbo, PT1001 intercooler, ST1 cam, 140 springs, pushrods, N* TB, L26 upper, HV3, otherwise stock L32. 10.007 @ 135.54with 1.46 60' 3130 lbs

    Old GenV M90, XP, heads, N* TB, ST2 intercooler - 11.425@115.60 1.54 60'
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  12. #12 Re: Turbo cam 
    GXP Level Member GTPpower's Avatar
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    ^^that is a really good point. St5's can make it difficult to build boost at the line.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  13. #13 Re: Turbo cam 
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    I never thought to ask ZZP to just do a one off grind of the ST2. Sounds like the best option.

    As for the lifters, it probably makes the most sense to remove the tired 195k lifters and put in new ones that will wear evenly with the ST2.. Especially since they really don't cost that much.
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  14. #14 Turbo cam 
    Donating User Swiggles's Avatar
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    Let me know when you are ready to sell that VS cam, very serious.

    I enjoyed my st2 and stage 3 heads it was a lot of fun.
    Last edited by Swiggles; 12-04-2016 at 10:07 PM.
    No more GP 04 Impala SS Indy:
    Gen V 3.4”|FWI|N* TB lq4 MAF|1.9 Modded Rockers|F&R Plogs|ZZP 3" Catted DP|ZZP 2.5" Catback|
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  15. #15 Re: Turbo cam 
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    I'm glad to see others that like the VS cam. I personally loved it, had a nice broad power band and wasn't lopey, but you could tell it had some balls. It's out of the motor now. I can take some pics later

    Pretty shocked to see how much of the chain damper was worn away. They really don't hold up well. I think I only have 15k on this motor with the cam swap and it looked like it could take maybe another 20k before the bottom part was going to chip off like others have had. Double roller it is!
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  16. #16 Re: Turbo cam 
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    Well, ZZP denied the custom grind for the ST2. Anyone know of reputable places to get a cam grind done that won't be outrageous?

    EDIT: ZZP will do the cam.
    Last edited by Nchristopherson; 12-05-2016 at 11:53 AM.
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  17. #17 Re: Turbo cam 
    GrandPrix Junkie SgtMarshal's Avatar
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    I would message overkill and ask him for a turbo can grind
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  18. #18 Re: Turbo cam 
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    What did you have to do or who did you have to talk to in order to get them to do the st2? Is it still 325?
    1998 Grand Prix GTP aka The Family Sedan
    CAI, 1.8 rockers, U-bend delete, 3.4 pulley, tuned by me
    1999 Turbo Grand Prix
    L36 turbo build in progress
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  19. #19 Re: Turbo cam 
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    Well at first they denied me because they don't stock it anymore. Then I asked why, and he said he talked to his manager and there wasn't enough demand for them, however, they're putting an order together and would put it in along with the other parts on the order. I just have to send them $340 using the misc payment feature. If you also send an email to customerservice@zzperformance.com, I'm sure they'll make the order for 2 ST2 cams.
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  20. #20 Re: Turbo cam 
    GXP Level Member Turbocharged400sbc's Avatar
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    St1r> st2
    ~James~ Psychotic Gearhead
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