Page 1 of 4 1234 LastLast
Results 1 to 20 of 62

LS heads Bang for Buck?

This is a discussion on LS heads Bang for Buck? within the Internal Engine forums, part of the LSx Technical Help Section category; i have to post this again since it didnt show up last damn time but here goes you all know ...

  1. #1
    Member
    Join Date
    Apr 2008
    Location
    allenhurst GA
    Posts
    306

    black
    99 formula firebird

    LS heads Bang for Buck?

    i have to post this again since it didnt show up last damn time but here goes
    you all know what i am looking for in a cam by now..and beleive me i appreciate the help!!! but i am looking at different heads now as well..i need to know which is the best bang for the buck..and keep in mind with the cams i have thought about i am also running forged pistons so i shouldnt have to fly cutt.. here are some heads i have found with links and flow info... again thanks for any and all help!!!

    first up PRC stage 3 LS6 heads..i can get em for liek $1500 shipped maby cheaper/.... http://www.texas-speed.com/shop/item...d=688&catid=40

    next up is a set of ported 241 heads....

    brand new set of LS1 Ported Heads ported by HFE. AND i can get these for $700-$750 plus shippin...



    LS1 STAGE 3 PORTED HEADS

    HEADS ARE PORTED. AND FLOWED @ 28" H2O
    241 CASTINGS & 225 CC INTAKE PORTS

    flowed on a Super Flow 600 Bench no pipe on a 2.00 valve

    PORTED FLOW NUMBERS

    LIFT INTAKE EXHAUST
    0.100 76.13 65.64
    0.200 151.78 125.96
    0.300 192.92 169.08
    0.400 269.97 218.89
    0.500 298.33 231.82
    0.550 309.98 240.01
    0.600 317.91 245.56

    those are what i have found so far...any others? help!!

  2. #2
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Location
    Thornton, CO
    Posts
    23,785

    Red Tint Jewelcoat
    2008 Trailblazer SS

    Patriot. LS6 stage 2.
    I know Patriot uses the same heads for their stage 2 and their stage 3. Valve size is different. If you have a 346...the valves are too big on the stage 3's. Not sure if that goes for the PRC's as well.


    Although those HFE heads sound like they flow nice.
    Oh...and your link doesn't work.
    Last edited by Mr. Luos; 06-09-2008 at 11:27 AM.

  3. #3
    rapter34
    Guest
    I've been wondering is stage 3 just overkill without incresing the cubes?

  4. #4
    Member
    Join Date
    Apr 2008
    Location
    allenhurst GA
    Posts
    306

    black
    99 formula firebird

    yea and the HFE heads are a shitload cheaper...and they got better FLOW #'s than some of the $2500 heads out there...

  5. #5
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Location
    Thornton, CO
    Posts
    23,785

    Red Tint Jewelcoat
    2008 Trailblazer SS

    Quote Originally Posted by QtrWhore View Post
    yea and the HFE heads are a shitload cheaper...and they got better FLOW #'s than some of the $2500 heads out there...
    Flow numbers are great and all...but they are roughly 30% of what makes a head work well.
    Just because they move a lot of air...doesn't mean they move it well. If that makes sense.

  6. #6
    Member
    Join Date
    Apr 2008
    Location
    allenhurst GA
    Posts
    306

    black
    99 formula firebird

    if you would please go look at my 400+ rwhp cam only thread and help me decide? i am not an engine builder but i cant afford to toss away parts and part money either..thanks again!!

  7. #7
    Senior Member OnEbAdReDSS's Avatar
    Join Date
    Apr 2006
    Location
    Puyallup
    Age
    30
    Posts
    1,416

    Red
    2000 Camaro SS # 5,876

    Quote Originally Posted by Mr. Luos View Post
    Flow numbers are great and all...but they are roughly 30% of what makes a head work well.
    Just because they move a lot of air...doesn't mean they move it well. If that makes sense.
    luos is right what makes the hp also is the fast burning combustion chambers and who has the best design... you get what you paid for

  8. #8
    Member
    Join Date
    Apr 2008
    Location
    allenhurst GA
    Posts
    306

    black
    99 formula firebird

    PM sent...

  9. #9
    Member
    Join Date
    Apr 2008
    Location
    allenhurst GA
    Posts
    306

    black
    99 formula firebird

    if i was to get these heads milled how much do i get taken off? which valves would be best ? springs? help!!!

  10. #10
    O U 8 1 2 Spaz's Avatar
    Join Date
    Nov 1999
    Location
    over here...
    Age
    39
    Posts
    25,693

    []D [] []V[] []D
    1999 trans am

    Quote Originally Posted by QtrWhore View Post
    if i was to get these heads milled how much do i get taken off? which valves would be best ? springs? help!!!
    why are you milling them??? do you plan on running higher octane??? personaly i'd leave them as they are and maybe go FI later on...

  11. #11
    Member
    Join Date
    Apr 2008
    Location
    allenhurst GA
    Posts
    306

    black
    99 formula firebird

    just asking about the heads everybody has said to get them milled down ...i dont have any plans on going forced induction thats why i want as much hp/tq NA as i can get..the juice is just for fun...

  12. #12
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Location
    Thornton, CO
    Posts
    23,785

    Red Tint Jewelcoat
    2008 Trailblazer SS

    Milling ups the compression ratio by making the chambers smaller.

    Milling will also make your valves closer to your pistons...thus making it much more important to clay the pistons and check your valve-to-piston clearance.

  13. #13
    Member
    Join Date
    Apr 2008
    Location
    allenhurst GA
    Posts
    306

    black
    99 formula firebird

    how do i know how much to mill off them if i do get them milled?
    looking at these two cams.. 240/244 .605/.596 112 LSA. and this one...236/240 .630/.610 111LSA

  14. #14
    O U 8 1 2 Spaz's Avatar
    Join Date
    Nov 1999
    Location
    over here...
    Age
    39
    Posts
    25,693

    []D [] []V[] []D
    1999 trans am

    Quote Originally Posted by QtrWhore View Post
    how do i know how much to mill off them if i do get them milled?
    looking at these two cams.. 240/244 .605/.596 112 LSA. and this one...236/240 .630/.610 111LSA
    don't bother milling them... also they are really large cams... just get a set of good heads...

  15. #15
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Location
    Thornton, CO
    Posts
    23,785

    Red Tint Jewelcoat
    2008 Trailblazer SS

    Quote Originally Posted by QtrWhore View Post
    how do i know how much to mill off them if i do get them milled?
    looking at these two cams.. 240/244 .605/.596 112 LSA. and this one...236/240 .630/.610 111LSA
    I can't tell you.


    Each cam might be on a different lobe. And depending on the lobe, the smaller lift may create more of a clearance issue.

  16. #16
    Senior Member OnEbAdReDSS's Avatar
    Join Date
    Apr 2006
    Location
    Puyallup
    Age
    30
    Posts
    1,416

    Red
    2000 Camaro SS # 5,876

    ya the only way you can do it is get some je pistons and do some math and ask for them to cut some more room for some valve relife.. or however you spell it.. and get smaller pushrods... its all about math! hope you past high school its just simple algrebra

  17. #17
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Location
    Thornton, CO
    Posts
    23,785

    Red Tint Jewelcoat
    2008 Trailblazer SS

    Valve reliefs = lower compression.
    Shorter pushrods to up clearance = very bad idea. Lifters require their specific preload. Shorter pushrods are just wasting the cam and making a LOT of valvetrain noise.

    Physically verify that your cam will fit if you mill the heads.

  18. #18
    Senior Member OnEbAdReDSS's Avatar
    Join Date
    Apr 2006
    Location
    Puyallup
    Age
    30
    Posts
    1,416

    Red
    2000 Camaro SS # 5,876

    sorry i meant either go with either or shorter pushrods or valve reliefs... als valve reliefs from what i was thought at the engine shop vavle relief to a certin extent won't lower compression 2 much just enough to maintain higher compression and keep the valves from knockin on the pistons

  19. #19
    Member
    Join Date
    Apr 2008
    Location
    allenhurst GA
    Posts
    306

    black
    99 formula firebird

    thanks for all the help!!! anybody else feel freee...need all i can get !

  20. #20
    cutting and welding mark21742's Avatar
    Join Date
    Mar 2008
    Location
    mercersburg pa
    Posts
    6,443

    hugger orange
    2004

    while we're talking about heads, what is the difference in performance between different valve angles on some aftermarket heads vs. stock angle

Page 1 of 4 1234 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Best Bang for Buck Kit?
    By GottaHaveLS1 in forum Nitrous
    Replies: 4
    Last Post: 02-12-2011, 11:48 PM
  2. Bang for Buck, Heads & Cam selection
    By Intrepidman in forum Internal Engine
    Replies: 22
    Last Post: 08-21-2009, 05:49 PM
  3. What heads are the best bang for you buck?
    By irocandroll4ws6 in forum Internal Engine
    Replies: 5
    Last Post: 09-11-2007, 10:04 PM
  4. Best bang for the buck
    By LS1SSZ28 in forum General Help
    Replies: 7
    Last Post: 05-20-2007, 09:19 PM
  5. Bang for the buck
    By camaro_freak86 in forum GM Trucks
    Replies: 1
    Last Post: 08-02-2006, 04:34 PM

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
  •