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whats the best head to use?

Discussion in 'HYBRID -> ED-EF / DA' started by gunz2165, Jul 2, 2005.

  1. gunz2165

    gunz2165 Member

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    what head should i use for my LS to turn it into an LS/Vtec? is a gsr a good choice? ive been told that its not the greatest head to use.
     
  2. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    gsr head is the best one to use IMO.
     
  3. gunz2165

    gunz2165 Member

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  4. drpenguin

    drpenguin Senior Member

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    I hear a b16 head will up the comp when mated to a LS block. but im not 100% sure
     
  5. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    :withstupid:
     
  6. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    :concur:
     
  7. hybrid89

    hybrid89 thistownsucks...

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    :withstupid: :hitit: :woo:
     
  8. trappd-in-859

    trappd-in-859 New Member

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    Isnt the gsr head and ls block known as poor man's type-r or is that something else?

    Anyway, yea, def. get the gsr head but if your low on funds, b16 head will be ok.
     
  9. hybrid89

    hybrid89 thistownsucks...

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    no, that is just an LS/vtec w/ a GSR head. a poor man typr r is a GSr block (usually with the type r pistons) and a b16 head.
     
  10. trappd-in-859

    trappd-in-859 New Member

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    Ok, thanks for the clarification.
     
  11. brian11to1

    brian11to1 Senior Member

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    are there any reason why someone should use a gsr head over a b16?
     
  12. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    higher compression
     
  13. MikeBergy

    MikeBergy Blah blah blah....

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    :yes:

    That, and the p72(gsr) casting is much better than the pr3 derivative heads(b16, ITR). The ports are better, the combustion chambers are better, everything is better. I'd open up the ports a little regardless of which head you get.
     
  14. brian11to1

    brian11to1 Senior Member

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    ok, if the gsr head is better than the ITR, why didnt the gsr head get used in place of the ITR (head)?
     
  15. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    ask honda. maybe it was cheaper to use the pr3 cast and just throw in better valvetrain and cams then to use to p72 for what they wanted to do. who knows. but the p72 gsr head is a better head.
     
  16. brian11to1

    brian11to1 Senior Member

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    wish someone had some flow charts do proove this.
     
  17. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    ive seen flow charts comparing the p72 and pr3 heads. the difference is so minute and neglable, you would never know. BUT the p72 will always come out on top in power/trq because of the higer compression
     
  18. brian11to1

    brian11to1 Senior Member

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    isnt the combustion chamber volume like 45cc's where as the b16/itr head is only 42cc (like the ls as well)?
     
  19. MikeBergy

    MikeBergy Blah blah blah....

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    I'm not sure on the specs, but the gsr has smaller chambers, unless you mill the pr3 head down a bit. The quench area in the gsr is smaller than that of the pr3, and so makes a bit more compression. The gsr ports have a straighter shot into the cylinders, which is good for midrange, but will allow for more reversion at the top end. Bottom line, type R head will be better out of the box, but the gsr has more potential.
     
  20. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    B16/ITR - 42.7 cc
    GSR - 41.6 cc
    LS - 45.0 cc
     
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