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Trick Flow GM LS1/2 CNC Competition Ported Cathedral Port Heads
These GenX cathedral port cylinder heads are fully CNC-machined to significantly increase the performance of LS-powered cars and trucks. Trick flow engineers altered the valve angles from 15 deg. to 13.5 deg. to decrease valve shrouding, increase mid-lift airflow, and improve rocker arm-to-valve cover clearance. Material was added at the rocker arm mounting points to increase high-RPM vavetrain stability. The spark plugs were relocated in the CNC-profiled combustion chambers to enhance mid-lift airflow and increase the rigidity of the casting for extreme horsepower applications. Top-of-the-line CNC Competition Ported runners have a premium high resolution surface finish for maximum flow and performance.
Assemblies feature 2.040"/1.575" (2.055" intake LS2) stainless valves, dual valve springs (to .600" lift) and titanium retainers.
Part Type: Cylinder Head
Application: Chevrolet/GM LS1, 5.7L
Cylinder Head Material: Aluminum
Bare or Assembled: Assembled
Combustion Chamber Size: 64cc
CNC Machined Combustion Chambers: Yes
Intake Valve Angle: 13.5
Exhaust Valve Angle: 13.5
Intake Port Volume: 215cc
CNC Machined Intake Port: Yes
Intake Port Flow: 320 cfm @ .600" Lift / 28"
Intake Port Location: Standard
Intake Port Shape: Cathedral
Intake Port Dimensions:
Suggested Intake Gaskets: Fel-Pro 1312-3 or Equivalent
Exhaust Port Volume: 80cc
CNC Machined Exhaust Port: Yes
Exhaust Port Flow: 259 cfm @ .600" Lift / 28"
Exhaust Port Location: Standard
Exhaust Port Shape: Oval
Exhaust Port Dimensions:
Suggested Exhaust Gaskets:
Spark Plug Style: Angle
Suggested Spark Plug:
Valve Guides: Bronze
Valve Guide Spacing:
Valve Stem Diameter: 8mm
Valve Seats:
Valve Job: 3 Angle
Intake Valve Diameter: 2.040"
Intake Valve Included: Yes
Exhaust Valve Diameter: 1.575"
Exhaust Valve Included: Yes
Suggested Valve Length: Intake: 124.45mm, Exhaust: 124.45mm
Valve Spring Pockets:
Valve Springs Included: Yes, 1.275" Dual
Valve Spring Application: Hydraulic Roller, 450lbs./in. Rate, .600" Max Lift
Valve Springs Retainers Included: Yes (Titanium)
Valve Locks Included: Yes (7 Degree)
Valve Seals Included: Yes, Viton
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: TrickFlow Specialties
Manufacturer's Part Number: TFS3061T001-C01
Weight:
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
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