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CBM MOTORSPORTS GM LSX / LS7 CNC PORTED COMPLETE 6 BOLT CYLINDER HEADS .660

Cylinder Heads

 

CBM MOTORSPORTS GM LSX / LS7 CNC PORTED COMPLETE 6 BOLT CYLINDER HEADS .660
CBM MOTORSPORTS GM LSX / LS7 CNC PORTED COMPLETE 6 BOLT CYLINDER HEADS .660CBM MOTORSPORTS GM LSX / LS7 CNC PORTED COMPLETE 6 BOLT CYLINDER HEADS .660CBM MOTORSPORTS GM LSX / LS7 CNC PORTED COMPLETE 6 BOLT CYLINDER HEADS .660
CBM MOTORSPORTS GM LSX / LS7 CNC PORTED COMPLETE 6 BOLT CYLINDER HEADS .660CBM MOTORSPORTS GM LSX / LS7 CNC PORTED COMPLETE 6 BOLT CYLINDER HEADS .660

CBM MOTORSPORTS
CYLINDER HEADS.

CBM Motorsports CNC ported aluminum cylinder heads for the LS series small block V8 engines will unleash the horsepower, torque and performance that your LS engine is capable of. These LSX / LS7 heads are capable of well over 1000hp on forced induction applications. We start with a GM bare casting and fully CNC port all intake and exhaust runners. From there they get assembled and tested before they are packaged ensuring great heads arrive the first time. To compliment these high end 6 bolt heads we use stainless steel valves and Manley Nextec springs. These heads flow nearly 400 CFM!!!

Assembly Specifications:

Stainless Steel Exhaust Valves.

  • Type: Exh.
  • Head Diameter: 1.610
  • Stem Diameter: .3136
  • Installed Height : Stock
  • O/A Length: 5.230
  • Tip Length: .290
  • Underhead Angle / Radius: 25° x 7/16”
  • Margin: .075
  • Seat Width: .100
  • Top of Head: 18° Dish
  • Wgt/Grams: 103

Stainless Steel Intake Valves.

  • Type: Int.
  • Head Diameter: 2.205
  • Stem Diameter: .3133
  • Installed Height : Stock
  • O/A Length: 5.200
  • Tip Length: .300
  • Underhead Angle / Radius: 12° x 3/8”
  • Margin: .050
  • Seat Width: .085
  • Top of Head: 7° Dish
  • Wgt/Grams: 120

Manley Nextek Valve Springs.

  • Max Valve Lift: .660"
  • OD: 1.295”
  • ID: .676"
  • Installed: 155 @ 1.810
  • Open Pressure: 405 @ 1.150
  • Rate (lbs/in): 379
  • Coil Bind: 1.100

Manley Titanium Retainers.

  • Valve Stem Diameter: .3133"/.3136"
  • Degree: 7°
  • Dimension A: 1.155”
  • Dimension B: .950”
  • Dimension C: .675”
  • Height: Stock

Manley I.D. Valve Spring Locators.

  • Locator ID: .505”
  • Locator OD: 1.270”
  • Thickness: .035
  • Shoulder Diameter: .675

Manley Machined Valve Locks.

  • Valve Stem: .3133"/.3136"
  • Groove Type: Bead Lock
  • Angle: 7°
  • Wgt/Pr: 2.6gms

Download specifications and flow chart here.

 

SKU: CBM-GM-CNC-LSX-660

Price: $2,599.99
In Stock
Quantity:

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