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  1. #1
    Junior Member
    Join Date
    Dec 2005
    Location
    Huntsville, AL
    Age
    59
    Posts
    36

    Black
    1999 WS6

    Lower CR heads for blower app,,advise

    I have been through the LT1 stage of 383s with superchargers. I have decided to take a different approach this time. The LS1 is fairly new to me. What CC heads are on the car and can I get a higher CC performance head to lower the CR to around 9 to 9.5. What cam would be adviced for a blower application in the LS1(I like a little lop'n too). I plan on using the ATI D1SC 8 rib and throw in an extra little boost since the CR will be a little lower. Just want to play it safe. Broke tooooooomany ring land in the LT1s and I dont feel like pulling the motor just yet or anytime soon. I know many of you have been through the learning process the hard way with the LS1's. Hope you don't mind if I can learn from your experiences.

  2. #2
    Veteran Hi-Po's Avatar
    Join Date
    Nov 2005
    Location
    Florida
    Posts
    10,467

    Black
    1999 TA WS.6

    im not ls1 expert but im pretty sure the lq9 heads off the Escalde will lower your CC decently.

  3. #3
    lee1rbc
    Guest
    Stock heads are 64cc. AFR has a head that you can get in 66cc or 76cc and will blow away LS6 heads for flow. Go to airflowresearch.com

  4. #4
    Blown, Stroked, & Sprayed

    Ed Blown Vert's Avatar
    Join Date
    Aug 1999
    Location
    Arizona
    Posts
    51,364

    Black
    383 Procharged & N20 Vert

    Getting a set of 6.0L heads will drop your CR to around 9.5
    Black 1999 Blown Convertible A4
    Forged 383 | ATI D-1SC
    NX MAF Kit | 222/226 .585 115
    AS Stage II 6.0L FI Heads
    Moser 9" | 3.70 | Wavetrac | 35 Spline | Vigilante 3600
    548.0 RWHP - 563.8 RWTQ - 10# - D1

    666.0 RWHP - 734.2 RWTQ - 125 Shot - P1

    Black 2009 Escalade Hybrid 4WD



  5. #5
    Junior Member Corvettestripes's Avatar
    Join Date
    Dec 2005
    Location
    DFW/Lubbock
    Age
    51
    Posts
    23

    Pewter
    Corvette C5

    ttt

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