Trickflow Genx Ls Bare Head Casting With Seats, 205cc Intake 4.8l/5.3l/5.7l

Serious horsepower for your LS-based engine, heads sold individually.

These Trick Flow GenX® 205 cathedral port cylinder heads for GM 4.8L/5.3L/5.7L LS Vortec engines are fully CNC-machined to significantly increase the performance of GM cars and trucks. Trick Flow engineers altered the valve angles from 15° to 13.5° 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 valvetrain 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. Cylinder heads are available fully assembled or as bare castings.
Part Number: TFS-3051B001-C00 Part Type: Cylinder Heads Product Line: Trick Flow® GenX® 205 Cylinder Heads for GM LS 4.8L/5.3L/5.7L (Vortec) UPC:842645106699 Cylinder Head Style: Bare Cylinder Head Material: Aluminum Cylinder Head Finish: Natural Combustion Chamber Volume (cc): 58 CNC-Machined Combustion Chamber: Yes Intake Runner Volume (cc): 205cc Exhaust Runner Volume (cc): 80cc CNC-Machined Intake Runner: Yes CNC-Machined Exhaust Runner: Yes Combustion Chamber Style: Heart Intake Port Shape: Cathedral Intake Port Location: Standard Exhaust Port Shape: Oval Exhaust Port Location: Standard Spark Plug Style: Angle Intake Valves Included: No Intake Valve Diameter (in): 2.000 in. Exhaust Valves Included: No Exhaust Valve Diameter (in): 1.575 in. Valve Springs Included: No Damper Spring Included: No Retainers Included: No Locks Included: No Valve Stem Seals Included: No Rocker Arm Studs Included: No Rocker Arms Included: No Rocker Arm Nuts Included: No Guideplates Included: No Valve Cover Mounting Style: Centerbolt Accessory Bolt Holes Drilled: Yes Intake Valve Angle: 13.50 Exhaust Valve Angle: 13.50 Valve Guides Included: Yes Valve Guide Material: Powdered metal Valve Seats Machined: Yes Valve Seat Machine Style: 3-angle Valve Seat Material: Ductile iron Steam Holes Drilled: No Oiling Style: Through pushrod Machined for O-Ring: No Heat Crossover: No Quantity: Sold individually.

Instruction Sheets