View Poll Results: What heads for 500+HP 408

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  • Trick Flow 235cc Runners

    1 33.33%
  • AFR 225cc Runners

    1 33.33%
  • Trick Flow 225cc Runners

    1 33.33%
  • Other (Please list below)

    0 0%
Results 1 to 4 of 4

Pick the Best Heads for my 500+HP 408 Project

This is a discussion on Pick the Best Heads for my 500+HP 408 Project within the Internal Engine forums, part of the LSx Technical Help Section category; Eagle Forged Crank 4.000 Eagle H-Beam Forged Rods Arias Pistons 4.030 -4cc Flat top TSP 248/254 .615/.622 Cam Ported F.A.S.T. ...

  1. #1
    Member SteelmanLS1's Avatar
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    Black
    2000 WS6 Trans Am M6

    Pick the Best Heads for my 500+HP 408 Project

    Eagle Forged Crank 4.000
    Eagle H-Beam Forged Rods
    Arias Pistons 4.030 -4cc Flat top
    TSP 248/254 .615/.622 Cam
    Ported F.A.S.T. 92mm Intake/92mm N.W. TB
    Bigger Injectors /w Better FP
    Double Roller Timing Chain
    Harland 1.7:1 Roller Rockers
    Hardened Pushrods
    LS7 Lifters (Maybe Morrels not sure yet)
    LS6 Ported Oil Pump

    Now what heads? I am going for Solid HP/TQ numbers. Somewhere around 540RQHP, and 490-500RWTQ.. Should be close I just cant make up my mind on the heads.

    AFR 225cc
    Trick Flow 225cc
    Trick Flow 225cc
    Other (Please list below)

  2. #2
    Member SteelmanLS1's Avatar
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    Black
    2000 WS6 Trans Am M6

    Maybe ET 225cc Runners.. They seem like good heads with a 11degree valve angle.

  3. #3
    Firebird Encyclopedia 9T8W66's Avatar
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    St. Clair Shores. Michigan
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    Navy Blue Metallic
    `98 Formula M6 HdTp

    Have you looked into L92's
    I mean you would have to change your intake to use them but the cost difference from the others you posted would be substantial.
    Craig
    Semi Retired Street Racer
    2012 Lava Red Mustang GT Coupe Brembo/3.73's
    Build Date 3/17/11, Last Lava Red GT

    Gone but not forgoten
    NBM `98 Formula M6 HdTp
    1 of 1 Build Date 3/12/98

  4. #4
    Junior Member
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    VA BEACH, VA
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    Black
    99 Camaro

    i would say the trickflow 235CC

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