Results 1 to 6 of 6

stock ls1 head flow

This is a discussion on stock ls1 head flow within the Internal Engine forums, part of the LSx Technical Help Section category; i was wondering what is the biggest valve an ls1 head can have and what would be the maximum flow ...

  1. #1
    N/A nitrously aspirated stangslayer98's Avatar
    Join Date
    Nov 2005
    Location
    miami,fl
    Age
    36
    Posts
    497

    black
    1998 trans am

    stock ls1 head flow

    i was wondering what is the biggest valve an ls1 head can have and what would be the maximum flow the head can have after being ported

  2. #2
    Senior Member OnEbAdReDSS's Avatar
    Join Date
    Apr 2006
    Location
    Puyallup
    Age
    30
    Posts
    1,416

    Red
    2000 Camaro SS # 5,876

    you can port them as far as you want... what i have read and from experiance with other engines... is port the intake runner to the same with a LS6 Manifold then Port match the headers with the exhaust runner... now for valves i think you can go up to 2.055 on the intake valve before serious modifications to the head and a 1.6 exhaust. A lot of builders back in the day with the LS1 Heads do the port match and polish w/ 2.055 intake valve and a 1.60 valve... with a ls6 manifold and a 221/221 cam they made over 420 hp

  3. #3
    Senior Member OnEbAdReDSS's Avatar
    Join Date
    Apr 2006
    Location
    Puyallup
    Age
    30
    Posts
    1,416

    Red
    2000 Camaro SS # 5,876

    this is what i am planning on doing with my heads when we do a stroker this winter

  4. #4
    N/A nitrously aspirated stangslayer98's Avatar
    Join Date
    Nov 2005
    Location
    miami,fl
    Age
    36
    Posts
    497

    black
    1998 trans am

    i was looking into geting a set of ported heads the shop owner/tech told me after porting his heads flow 300cfm i dont know at what lift though. he charges $850 plus core exchange

  5. #5
    Senior Member OnEbAdReDSS's Avatar
    Join Date
    Apr 2006
    Location
    Puyallup
    Age
    30
    Posts
    1,416

    Red
    2000 Camaro SS # 5,876

    thats not bad at at!

  6. #6
    Gold Member BlwnCamaro's Avatar
    Join Date
    May 2006
    Location
    Las Cruces,NM
    Age
    40
    Posts
    473

    Black
    1998 Z28 Camaro

    Quote Originally Posted by stangslayer98 View Post
    i was looking into geting a set of ported heads the shop owner/tech told me after porting his heads flow 300cfm i dont know at what lift though. he charges $850 plus core exchange

    not impossible but on the high side for port job on stock heads, probably more realistic is like 275 cfm at around .600 lift on stock ported to the max head. 300+ is more like aftermarket head territory. They probably flow low 200's stock maybe 230 at most. Tell this guy to provide flow chart numbers not being rude but to back up claims. I port heads but dont have flow bench so am not bragging numbers but if you know what you are doing the results speak for themselves. Any other flow bench guys please correct me on the numbers but this should be close for stock and ported ls head. Good luck

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Trick Flow Head/Cam Package??
    By splitfinger09 in forum Internal Engine
    Replies: 47
    Last Post: 10-25-2010, 08:30 PM
  2. Head Flow question
    By dude2000_22222 in forum Internal Engine
    Replies: 7
    Last Post: 05-15-2010, 06:56 PM
  3. Replies: 0
    Last Post: 01-16-2008, 05:40 PM
  4. Help, need stock Ls1 head flow data...
    By 5.0stang in forum Internal Engine
    Replies: 3
    Last Post: 08-21-2007, 03:43 PM
  5. LS/ head flow figures
    By Duke of Cruel in forum Internal Engine
    Replies: 0
    Last Post: 08-17-2006, 07:41 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
  •