Thread: more aggressive cam

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  1. #1 more aggressive cam 
    GrandPrix Junkie SgtMarshal's Avatar
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    I currently have an XP cam with ported L32 heads. I want to do a more aggressive cam and valve spring combo, but not remove the heads. I was thinking about doing an XPZ, but don't really wan't to take the heads for machining, so I'm considering other cams such as the S2X or S3X and maybe an NIC. what do I need to consider when evaluating a cam for the heads I have?
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  2. #2 Re: more aggressive cam 
    GrandPrix Junkie CrazyGuy03's Avatar
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    The max lift won't allow those cams at 1.6 ratio on stock heads
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*
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  3. #3 Re: more aggressive cam 
    Awesome Level Member chrsmi1's Avatar
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    I've looked into the IS3 cam before and i think with stock rockers you can get away with just stronger springs (130 or 140#) double roller and ported heads. I would be sure you have more than a quick port job though, because there is a lot of lift with the IS3.
    Check this out.
    http://www.3800pro.com/forum/cams-he...machining.html

    and from here
    http://www.grandprixforums.net/threa...a-Daily-Driver

    Honestly man. Nitrous with your XP and call it a day
    Comp G. E85, 2.8, Headers, Tune, Intake, S1X, 105# springs, 60 # injectors, 255 walbro,etc.

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  4. #4 Re: more aggressive cam 
    GrandPrix Junkie CrazyGuy03's Avatar
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    S3x at 1.6 - .540/.550
    xpz at 1.6 - .563/.532

    Now the s1x at 1.6 - .514/.526

    Stock l67 - .413/.413 (I think)

    so mill the guides cause I think it maxes out at .530 for stock head but the Anything more than that needs porting or else all that is gone to waste
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*
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  5. #5 Re: more aggressive cam 
    GrandPrix Junkie SgtMarshal's Avatar
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    is there enough difference between the S2X and the XP to justify the change? and what about the BBC cam that Overkill designed?

    http://www.getoverkilled.ca/3800tech.html
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  6. #6 Re: more aggressive cam 
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    Quote Originally Posted by SgtMarshal View Post
    I currently have an XP cam with ported L32 heads. I want to do a more aggressive cam and valve spring combo, but not remove the heads. I was thinking about doing an XPZ, but don't really wan't to take the heads for machining, so I'm considering other cams such as the S2X or S3X and maybe an NIC. what do I need to consider when evaluating a cam for the heads I have?
    Curious to know why do you want change cams? Do you feel that you maxed out the xp? Probably not .. I would stick with your setup plus the xp cam idles wayy better then the xpz... And since you really dont want to do porting for heads.. You should stick with it ... Goin bigger isnt always better... Be surprised how much power you would make with that cam And surprised what those cams wouldnt make at the dyno..lol
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  7. #7 Re: more aggressive cam 
    The Blue One blueguy's Avatar
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    Just lower the idle speed.

    That'll make it sound better.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  8. #8 Re: more aggressive cam 
    GTP Level Member WhiteLightningGTP's Avatar
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    How many camz does 3800 haz
    2004 Comp G "The Panda"- low, e85, big brakes SOLD
    2002 Trans Am- 6 speed, bolt ons or something, it's slow.
    2006 Silverado- forged ls2, 4l80e, plate kit, also slow...
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  9. #9 Re: more aggressive cam 
    Donating Users bandook's Avatar
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    Quote Originally Posted by WhiteLightningGTP View Post
    How many camz does 3800 haz
    Just one
    Top Swapped 01 Imp
    VS (very small?) cam, SD Headers, 2.8" pulley, 29°, ported everything, E85, AEM water/meth, Deka 60's, HPT tuned
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  10. #10 Re: more aggressive cam 
    The Blue One blueguy's Avatar
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    17.3
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  11. #11 Re: more aggressive cam 
    Bastard Reptile's Avatar
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    Of all the normal cams I've played with, I really liked the XP, my least favorite is the XPZ, because it's tough on the valvetrain. My car that's getting the turbo soon had this crap thing in it, and it ruined both sets of heads because it chewed up the valves, and wore the guides. Honestly, the only remote way to run that thing is roller rockers, so it doesn't **** your heads.
    My Bastard car has the BBC prototype, similar duration but more lift...and I love love love the cam. My specs are 224/236 duration, 573/571 lift, 115* LSA.
    My opinion though, you've already got the cam....work on a good set of good flowing heads.
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  12. #12 Re: more aggressive cam 
    GrandPrix Junkie CrazyGuy03's Avatar
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    Port the heads, mill the guides , keep the cam, get 1.8s

    or get a s3x - love it Can't wait to post some timeslips soon
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*
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  13. #13 Re: more aggressive cam 
    Turbo is the way to go. BillBoost37's Avatar
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    You would be simply amazed at how much of a restriction is in the heads. By not wanting to swap them, you are doing yourself a great injustice.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  14. #14 Re: more aggressive cam 
    GrandPrix Junkie SgtMarshal's Avatar
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    Quote Originally Posted by BillBoost37 View Post
    You would be simply amazed at how much of a restriction is in the heads. By not wanting to swap them, you are doing yourself a great injustice.
    I have already swapped the heads to a set of L32 heads ported by chris hinson, they are one of his earlier sets. I also had a valve job done on them before installation.
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  15. #15 Re: more aggressive cam 
    GrandPrix Junkie CrazyGuy03's Avatar
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    Well that's a huge detail gone unknown to me lol
    i hear "ported" and think home port job and assume the guides aren't milled.

    Do know the specs of the head work he did ?
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*
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  16. #16 Re: more aggressive cam 
    GrandPrix Junkie SgtMarshal's Avatar
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    the guides probably aren't milled. Chris never really published any specs for his ported heads, really all he said was that with an xp cam he can maximize the airflow through the heads.

    sorry, sometimes I forget to leave out details.
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  17. #17 Re: more aggressive cam 
    Turbo is the way to go. BillBoost37's Avatar
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    Now...you need to find out the details about the guide. Because.. since you technically have ported heads. I'd recommend a rocker on top of the cam.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  18. #18 Re: more aggressive cam 
    GrandPrix Junkie SgtMarshal's Avatar
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    I don't think the guides have been milled. here are some pictures of the heads

    http://s1115.photobucket.com/user/jo.../library/heads
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  19. #19 Re: more aggressive cam 
    Turbo is the way to go. BillBoost37's Avatar
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    You can't tell anything from those pictures. You need to measure
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  20. #20 Re: more aggressive cam 
    GrandPrix Junkie SgtMarshal's Avatar
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    that's all I have, they are on the car now, and no one has taken measurements. at this point I'm thinking I will just do a set of 130 lb springs with a double roller and maybe a balanced harmonic balancer. if I did take measurements, I would just check the distance from the bottom of the spring pocket to the top of the valve, right? and that should allow for an installed spring height of 1.8 inches. am I understanding that correctly?
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