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ProMaxx Performance 2151 - Patriot Performance GM Vortec 185cc Cylinder Heads

ProMaxx Performance 2151 - Patriot Performance GM Vortec 185cc Cylinder Heads

ProMaxx Performance#723-2151

Cast Iron Small Block Chevy Vortec Cylinder Heads
  • Assembled
  • Straight Plug
  • Intake Ports: 185cc
  • Combustion Chambers: 64cc
  • Valves: 2.02" Intake, 1.60" Exhaust
  • Pair

    ProMaxx Performance 2151 - Patriot Performance GM Vortec 185cc Cylinder Heads

    Patriot Performance has taken the ''Vortec'' head one step further. They have designed these iron heads to work well on 350-383 applications. These have been very popular with street/strip customers and our round track customers love them! Available assembled with .575'' lift springs, 2.02''/1.60'' stainless valves. 3/8'' studs, and guide plates. Unique features of these heads are screw in 3/8'' studs, large spring pockets, Dual intake bolt patterns, center bolt or perimeter bolt valve covers, and improved intake and exhaust runners.



    Technical Specs
    Combustion Chamber: 64cc
    Intake Runner: 185cc
    Exhaust Runner: 60cc
    Intake Valve: 2.02"
    Exhaust Valve: 1.60"
    Max. Valve Spring Lift: 0.575"
    Spring Pressure Closed: 115 lbs. @ 1.800"
    Spring Pressure Open: 310 lbs. @ 1.225"
    Retainer Material: Steel
    Valve Seal Material: Viton
    Valve Job: 5-angle
    Material: Cast Iron

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