Results 1 to 9 of 9

Thread: upgraded cams

  1. #1
    Forum User Not Verified Feedback Score 3 (100%)
    Join Date
    Nov 2010
    Owner Since
    2007

    Location
    Midland,MI
    Posts
    175
    Thanks
    0
    Thanked 1 Time in 1 Post

    upgraded cams

    Now I know our stock valvetrain is pretty weak but I noticed that places like C3Motorsports and Split Second sell heads with upgraded cams and not upgraded valvetrain. So my question is, would it be possible to run like a 264 cam and keep the factory 7300 rpm redline? Or would I screw myself over? Please no smart ass remarks, getting really tired of those from certain people. Just wanna have a question answered without any d-bag rambling off their mouth.

  2. #2
    Forum User Not Verified Feedback Score 4 (100%) TUFFTR's Avatar
    Join Date
    Sep 2010
    Owner Since

    Posts
    760
    Thanks
    27
    Thanked 13 Times in 9 Posts
    Hi there. From the research I've done I was led to believe that even on 272 cams the stock valvetrain is OK, and anything above will need upgraded springs and retainers. I read numerous posts from members with 272 cams on stock heads will no downsides, so this was enough for me to do it on my 3.5L
    Hope that helped.

  3. #3
    Forum User Not Verified Feedback Score 0 92pearltt's Avatar
    Join Date
    Sep 2010
    Owner Since
    2005

    Posts
    336
    Thanks
    20
    Thanked 7 Times in 5 Posts
    Up to 272 cams should be fine with stock springs and stock rev limit. If you bump the rev limit though you should upgrade the springs and retainers. At least that is what I have found from my research.

    Current:
    1972 Chevy Nova
    2004 Ford F350 Lariat 6.0L
    1991 Stealth TT FWD
    1962 Volkswagen Beetle

    Previous:
    1994 Stealth RT/TT
    1999 3000gt SL
    1973 Volkswagen Super Beetle
    1976 Jaguar XJ6
    1991 Chevy S10
    2000 Ford focus

  4. #4
    Forum User Not Verified Feedback Score 3 (100%)
    Join Date
    Nov 2010
    Owner Since
    2007

    Location
    Midland,MI
    Posts
    175
    Thanks
    0
    Thanked 1 Time in 1 Post
    Thanks guys. Looks like cams are in my future

  5. #5
    I AM IMPORT POWER Feedback Score 1 (100%)
    Join Date
    Sep 2010
    Owner Since
    2001

    Location
    Driving Vicki Crazy
    Posts
    1,457
    Thanks
    58
    Thanked 281 Times in 134 Posts
    Quote Originally Posted by whitedevilstealth View Post
    Now I know our stock valvetrain is pretty weak but I noticed that places like C3Motorsports and Split Second sell heads with upgraded cams and not upgraded valvetrain. So my question is, would it be possible to run like a 264 cam and keep the factory 7300 rpm redline? Or would I screw myself over? Please no smart ass remarks, getting really tired of those from certain people. Just wanna have a question answered without any d-bag rambling off their mouth.
    Where did you gather that our valvetrain is "pretty weak"?

    -Chris

  6. #6
    Forum User Not Verified Feedback Score 3 (100%)
    Join Date
    Nov 2010
    Owner Since
    2007

    Location
    Midland,MI
    Posts
    175
    Thanks
    0
    Thanked 1 Time in 1 Post
    Everybody that sells cams like 3sx and IPS say on their description to upgrade valvetrain with even a minor cam like a 264.

  7. #7
    Forum User verified Feedback Score 1 (100%)
    Join Date
    Sep 2010
    Owner Since
    August 2003

    Location
    Uniontown
    Posts
    494
    Thanks
    8
    Thanked 12 Times in 11 Posts
    Its not so much weak, as it is with every head that if you have to high a lift and to high an rpm your valves will not re-seat fast enough. I am pretty sure that's correct.

    I think the limit is a 264 with the stock valve springs and rev limit. Other than that, you will need to change.

  8. #8
    Forum User Not Verified Feedback Score 3 (100%)
    Join Date
    Nov 2010
    Owner Since
    2007

    Location
    Midland,MI
    Posts
    175
    Thanks
    0
    Thanked 1 Time in 1 Post
    Thats what I have asked before to 3sx and IPS but they told me even a 264 needs upgraded valvetrain. Cuz when I had my heads off I was gonna go with 264, but stayed stock cuz I didnt wanna spend a bunch of money on the springs.

  9. #9
    Honda Eater Feedback Score 0 Mike-92RT's Avatar
    Join Date
    Sep 2010
    Owner Since
    April 2007

    Location
    Ontario, Canada
    Posts
    334
    Blog Entries
    1
    Thanks
    4
    Thanked 6 Times in 1 Post
    i guess it depends how you're gonna drive your car after the upgrade cams... if your gonna drive the shit out of it, then i guess upgrading the valvetrain would be necessary.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
The 3000GT/Stealth/GTO Web History Project
3000gt.com
3000GT / Stealth International WWWboard Archive
Jim's (RED3KGT) Reststop
3000GT/Stealth/GTO Information and Resources
Team 3S
3000GT / Stealth / GTO Information
daveblack.net
3000GT/Stealth/GTO Clubs and Groups
Michigan 3S
MInnesota 3S
Wisconsin 3S
Iowa, Nebraska, Kansas 3S
North California 3000GT/Stealth
United Society of 3S Owners
3000GT/Stealth/GTO Forums
3000GT/Stealth International
3000GT/Stealth/GTO Event Pages
3S National Gathering
East Coast Gathering
Upper Mid-West Gathering
Blue Ridge Gathering