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  • #1

    i'm dreaming

    what do you guys think about this 199-PKG3 Precision Race Components 5.3L Stage 2.5 Cylinder Heads - No Exchange, Your Choice of TSP Camshaft, TSP Hardened Pushrods, GM Heads/Cam Bolt & Gasket Kit, TSP Ported LS6 Oil Pump, Rollmaster Double-Roller Heat-Treated Timing Set $2,379.99
    i know it will take me a while as i'm dreaming now, but i like to learn something first b4 i get it. just like my header i learn far far before from you guys , my question about my dream package is why 5.3L why not 5.7L head ?
    second question is do they come with valve spring (dual or single) and everything related to it ?
    OR they just ready to Assembled.

    like always thank you guys
    2001 Trans Am WS6 M6
    SLP: short throw|short shifter|CAI|MAF|TB ByPass
    Spohn: SFC|Tunnel Brace|LCA|Swaybars|LCA bracket|Shock Tower Brace|Nitto NT555 Extreme Performance|Pacesetter LT|TrueDual|1-chamber Flowmaster|DLA224/224Cam|Comp Cams 918 Springs|ported oil pump|timing chain|PRC LS6 heads|LS7 lifters|Fast Intake 90mm|NW TB 90mm|Thermostat 160|NGK TR 55|RacetronicFP|429/404 hp/tq|tuned by George Haddad motorsports
    http://www.cardomain.com/memberpage/690385
    Tags: None
  • #2
    The 5.3L heads are from the LM7 truck engines. As I recall, they have a smaller combustion chamber, and raise the compression ratio on the 346ci LS1.
    Fred

    381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor

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    • #3
      Originally posted by Injuneer
      The 5.3L heads are from the LM7 truck engines. As I recall, they have a smaller combustion chamber, and raise the compression ratio on the 346ci LS1.
      That's what I remember too.
      Former Ride: 2002 Pontiac Trans Am WS6 - 345 rwhp, 360 rwtq... stock internally.

      Current Ride: 2006 Subaru Legacy GT Limited - spec.B #312 of 500

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