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Thread: GM cylinder head specs

  1. #11
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    Instructions For Trav:

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    If These Steps Are Followed Accordingly, V Should Have No Further Pms From Trav
    '02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
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    09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly

  2. #12
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    Did I miss something????

    ~ Forged engine of some type ~ Ball bearing turbo of an unconfirmed size ~ 4L8000 trans ~ Beefy fuel system ~

  3. #13
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    Quote Originally Posted by cjriojas View Post
    Instructions For Trav:

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    If These Steps Are Followed Accordingly, V Should Have No Further Pms From Trav
    Ha ha ha. NOT!

    I don't send pm's. I just ask questions in the chat box....duh!
    T-RAV
    99 GMC | 5.3 | Skinny White Guy Tuned

  4. #14
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    i have some info to add

    LS7 Intake LS7 Exhaust
    cfm cfm
    .200/161 114
    .300/227 171
    .400/291 193
    .500/330 203
    .600/351 209
    .700/359 214
    '02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
    2013 GMC Acadia: SLT1 Carbon Black
    1976 Corvette Stingray: Trying to save it, progress is slow.

    ^Ricky's Sweet PS Skilz
    09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly

  5. #15
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    Easiest thing to do is just tell Trav it can't be done for $50 bucks. Shuts him right down.
    2006 Silverado
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  6. #16
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    Man, talk about hate.

    The link doesn't work for me. Anyone else having a problem with it?
    2000 GMC Sierra 5.3L 4x4 ECSB

  7. #17
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    Quote Originally Posted by sleeper1500 View Post
    Easiest thing to do is just tell Trav it can't be done for $50 bucks. Shuts him right down.

    I've bumped my limit up to $150 now so take that
    T-RAV
    99 GMC | 5.3 | Skinny White Guy Tuned

  8. #18
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    Quote Originally Posted by cjriojas View Post
    i have some info to add

    LS7 Intake LS7 Exhaust
    cfm cfm
    .200/161 114
    .300/227 171
    .400/291 193
    .500/330 203
    .600/351 209
    .700/359 214
    I found different numbers from LG Motorsports and i'm not sure which is correct.

    Lift Intake Exhaust

    .300 246 cfm 174 cfm

    .400 302 cfm 200 cfm

    .500 343 cfm 211 cfm

    .550 358 cfm 216 cfm

    .600 360 cfm 220 cfm

    .650 379 cfm 224 cfm

    LS7 Flow numbers - Corvette Forum
    Last edited by cjriojas; 11-23-2009 at 03:00 AM.
    '02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
    2013 GMC Acadia: SLT1 Carbon Black
    1976 Corvette Stingray: Trying to save it, progress is slow.

    ^Ricky's Sweet PS Skilz
    09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly

  9. #19
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    I found these also. The numbers are from GM's parts catalog. LS7 heads will not fit on anything with a bore smaller than 4.1"

    L92 Lightweight Offset Rocker Arms - Car Craft Magazine
    '02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
    2013 GMC Acadia: SLT1 Carbon Black
    1976 Corvette Stingray: Trying to save it, progress is slow.

    ^Ricky's Sweet PS Skilz
    09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly

  10. #20
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    bump for the new guys. I would also like to add that i have been working on an excel sheet with GM's and several (hopefully all) aftermarket heads which includes flows, CC, and valve diameter. Should be done sometime after finals this semester.
    '02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
    2013 GMC Acadia: SLT1 Carbon Black
    1976 Corvette Stingray: Trying to save it, progress is slow.

    ^Ricky's Sweet PS Skilz
    09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly

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