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the best ls/vtec setup is...?

Discussion in 'Engine Building' started by SPEEDFREAK0920, Nov 15, 2004.

  1. SPEEDFREAK0920

    SPEEDFREAK0920 Senior Member

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    sup guys. i wanna drop a vtec head on my ls over the winter. has anyone done this setup before? if so what's going to give me the most power and reliability? i've read that a gsr head will produce about 5-10 more hp than a b16 head, but i've also heard that a b16 head flows better than a b18c head. one of my buddies told me that some people with gsr's drop b16 heads on em cuz they're able to gain more power. here's the best set-up that i've come up with so far: b18c head/itr intake cam/ctr pistons/balance stock crank/stock rods/replace rod and main bearings/and port n polish. i'll eventually build the valvetrain but not til later on. thanks for all the help
     
  2. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    the B16 head outflows the GSR head SLIGHTLY in the top end
    the GSR head outflows the B16 head SLIGHTLY in the mid range .

    the difference is not enough to really worry about, especially if you plan to port and polish anyway... the difference is no longer an issue

    the GSR head will yeild about .2 more compression
    the CTR pistons will not fit the LS rods... B18C rods will not fit the LS crank
    get some aftermarket rods and pistons
    if you are going to do the cams, do both the intake and exhaust, otherwise you will not see the full gain
     
  3. SlushboxTeggy

    SlushboxTeggy It's only stupid if it doesn't work VIP

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    the best head for the job is the type r but since i dont have the money i used a b16 and have another half built ls/vtec with a b16.
     
  4. jamesA

    jamesA Well known pissed off telephone guy VIP

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    the type R head is pretty much a b16 head thats been ported and uses more aggressive cams.
     
  5. b204dr

    b204dr Senior Member

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    dont forget about the valves retainers and every thing in the type r head is slightly better for a higher rev! .. b16b head is the best stock.. but who is going to have on of them lying around
     
  6. civicious

    civicious FüK-VTEC VIP

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    Sleeve the LS block to 84.5 and refer to my sig

    :D
     
  7. SPEEDFREAK0920

    SPEEDFREAK0920 Senior Member

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    misprint * itr pistons. found a gsr head with full itr internals for dirt cheap. hopefully gonna pick it up today.
     
  8. handlebarsfsr

    handlebarsfsr Senior Member

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    if your gonna put that much $$ into it.. why not just get a gsr motor, is that extra 36cc really all that important?
     
  9. b204dr

    b204dr Senior Member

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    some people dont have the money all at once , others just like some thing new.. others follow the fad , choose one! , i like my crvtec! turbo helped too
     
  10. civicious

    civicious FüK-VTEC VIP

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    Low-interest loans are your friend.
     
  11. SPEEDFREAK0920

    SPEEDFREAK0920 Senior Member

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    if i wanted a gsr i would've got one. that's not the point. i wanna build up my ls (since i already have it) to produce 200 whp. it's more of a challenge and something that i'll be proud of when ish all done and running hard. so i'm definately gonna stick with the ls/vtec. thanks e sol si cuz ur the only one who really helped. payce
     
  12. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    your best bet will still be to get aftermarket pistons and rods

    i think the only pistons that will fit right onto the LS rods are the B16 pistons (the JDM P30 pistons will give you higher compression)
    any others will require modification of the rod or the piston

    import builders offers several pistons for however crazy you want to get, and their quality is pretty much unmatched
     
  13. SPEEDFREAK0920

    SPEEDFREAK0920 Senior Member

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    shouldn't itr pistons fit ? i was looking for that site. could you give it to me ? thanks man
     
  14. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Rod width is different. You'll have to modify either the pistons or rods to get ITR pistons on LS rods.
     
  15. SPEEDFREAK0920

    SPEEDFREAK0920 Senior Member

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    that's for the info calesta. just asking cuz i saw a ls/vtec setup with type r pistons. how much would it cost for a simple piston setup to raise my compression? thanks man
     
  16. civicious

    civicious FüK-VTEC VIP

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    you can get your ls rods machined to fit itr pistons...just take about 1mm off each side of the top of the rod
     
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