Results 1 to 7 of 7

compression

This is a discussion on compression within the Forced Induction forums, part of the LSx Technical Help Section category; I hope I word this correctly.... I am a nitrous guy so be patient LOL I am running a cam ...

  1. #1
    Junior Member RedMetal's Avatar
    Join Date
    Jun 2006
    Location
    Arnaudville, LA
    Age
    44
    Posts
    78

    Bright Rally Red
    01 Camaro SS M6

    compression

    I hope I word this correctly.... I am a nitrous guy so be patient LOL

    I am running a cam only LS1.... see sig. I am interested in buying some Stage II LS6 heads that will retain the stock LS6 compression of 10.5-1. I just want to add a little more grunt/fun for the time being with my N/A setup.

    Now the question, will I be able to get the compression down from 10.5-1 to atleast 9.5-1 with a forged 347 using the above mentioned heads?? I assume the CR could be lowered to 9.5 with just dished pistons. Am I crazy LOL? When I can afford it I would like to enter the FI world. My goals are modest, I would like to run (X)psi to reach 530-550rwhp.

    Thanks
    F14, FLP LT's, Hooker-Catback, Ram Dual Street, 42# injectors, Granatelli 255lph intank, N20, 3.90's, Eibach Pro's

  2. #2
    Member cailey37's Avatar
    Join Date
    Mar 2006
    Location
    Mississippi
    Posts
    832

    Silver
    1998 Pontiac Trans Am

    Quote Originally Posted by RedMetal View Post
    I hope I word this correctly.... I am a nitrous guy so be patient LOL

    I am running a cam only LS1.... see sig. I am interested in buying some Stage II LS6 heads that will retain the stock LS6 compression of 10.5-1. I just want to add a little more grunt/fun for the time being with my N/A setup.

    Now the question, will I be able to get the compression down from 10.5-1 to atleast 9.5-1 with a forged 347 using the above mentioned heads?? I assume the CR could be lowered to 9.5 with just dished pistons. Am I crazy LOL? When I can afford it I would like to enter the FI world. My goals are modest, I would like to run (X)psi to reach 530-550rwhp.

    Thanks

    Do you happen to know what cc's the heads are???

  3. #3
    TunedbyFrost.com Tuner Frost's Avatar
    Join Date
    Jul 2007
    Location
    Richmond VA
    Posts
    2,415

    LS1.com Sponsor
    GM Tuner

    64cc or less if milled. Yeah you can use a dish and get to 9.5:1.
    Last edited by Frost; 02-20-2008 at 05:14 AM.

  4. #4
    Junior Member RedMetal's Avatar
    Join Date
    Jun 2006
    Location
    Arnaudville, LA
    Age
    44
    Posts
    78

    Bright Rally Red
    01 Camaro SS M6

    yes, 64cc is how they come which is how I came up with 10.5-1 using the stock GM gaskets. Thanks Frost

  5. #5
    Member cailey37's Avatar
    Join Date
    Mar 2006
    Location
    Mississippi
    Posts
    832

    Silver
    1998 Pontiac Trans Am

    Quote Originally Posted by RedMetal View Post
    yes, 64cc is how they come which is how I came up with 10.5-1 using the stock GM gaskets. Thanks Frost
    With that I wouldn't get too crazy with the boost. Nothing really over 7-8 lbs....but hey....that's just me....you wouldn't be pushing it too bad and still have a little reliability.

  6. #6
    Junior Member RedMetal's Avatar
    Join Date
    Jun 2006
    Location
    Arnaudville, LA
    Age
    44
    Posts
    78

    Bright Rally Red
    01 Camaro SS M6

    Quote Originally Posted by cailey37 View Post
    With that I wouldn't get too crazy with the boost. Nothing really over 7-8 lbs....but hey....that's just me....you wouldn't be pushing it too bad and still have a little reliability.

    Well, I wouldn't be running boost until the engine is forged and at that point I would use dished pistons to reach a more boost friendly 9.5-1 and would like to run 10-12 lbs.

  7. #7
    Member Bouvers's Avatar
    Join Date
    May 2006
    Location
    Canada
    Age
    31
    Posts
    857

    Blue 1997 Trans Am(Sold)
    Pewter 2001 Trans Am Vert

    I'm interested about this too... he's asking the exact same questions I ask myself with the same goals

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. compression
    By SIERA*123 in forum General Help
    Replies: 0
    Last Post: 09-13-2008, 07:40 AM
  2. Compression
    By SIERA*123 in forum GM Trucks
    Replies: 0
    Last Post: 09-13-2008, 07:04 AM
  3. Compression?
    By schrysler in forum Internal Engine
    Replies: 3
    Last Post: 07-02-2007, 03:53 PM
  4. compression
    By fastbuff in forum General Help
    Replies: 6
    Last Post: 12-16-2006, 01:18 PM
  5. At what compression
    By Mr. Luos in forum Internal Engine
    Replies: 8
    Last Post: 06-24-2006, 09:05 AM

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
  •