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Power Products™ GM LS1 Cathedral Port Heads
These brand new castings are designed and manufactured for performance. 212cc cathedral port intake runners and 76cc exhaust runners.
Part Type: Cylinder Head
Application: Chevrolet/GM LS1
Cylinder Head Material: Aluminum
Bare or Assembled: Assembled
Combustion Chamber Size: 57cc
CNC Machined Combustion Chambers: No
Intake Valve Angle: 13.50
Exhaust Valve Angle: 13.50
Intake Port Volume: 212cc
CNC Machined Intake Port: No
Intake Port Flow:
Intake Port Location: Standard
Intake Port Shape: Cathedral
Intake Port Dimensions:
Suggested Intake Gaskets:
Exhaust Port Volume: 76cc
CNC Machined Exhaust Port: No
Exhaust Port Flow:
Exhaust Port Location: Standard
Exhaust Port Shape: Irregular
Exhaust Port Dimensions:
Suggested Exhaust Gaskets:
Spark Plug Style:
Suggested Spark Plug:
Valve Guides: Bronze
Valve Guide Spacing:
Valve Stem Diameter: 8mm
Valve Seats:
Valve Job:
Intake Valve Diameter: 2.02"
Intake Valve Included: Yes
Exhaust Valve Diameter: 1.570"
Exhaust Valve Included: Yes
Suggested Valve Length: 4.880"/4.920"
Valve Spring Pockets:
Valve Springs Included: Beehive 108 @ 1.800", 345 @ 1.225
Valve Spring Application: Hydraulic Roller
Valve Springs Retainers Included: Yes
Valve Locks Included: Yes
Valve Seals Included: Yes
Rocker Studs Included: No
Guide Plates Included: No
Valve Cover Mounting Style: Centerbolt
Steam Holes Drilled: No
Heat Crossover: No
Suggested Head Bolts:
Suggested Head Studs:
Suggested Stud Girdle: NA
Head Bolt Torque with Oil:
Rocker Stud Torque with Oil:
Intake Bolt Torque with Oil:
Manufacturer: Power Products™
Manufacturer's Part Number: 54420K20
Weight:
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
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