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. Springs are good to .650 lift.
Part Number: TFS-3051T001-C00
Part Type: Cylinder Heads
Product Line: Trick Flow® GenX® 205 Cylinder Heads for GM LS 4.8L/5.3L/5.7L (Vortec)
UPC: 842645106705
Cylinder Head Style: Assembled
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: Yes
Intake Valve Diameter (in): 2.000 in.
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in): 1.575 in.
Valve Springs Included: Yes
Outside Diameter of Outer Spring (in): 1.300 in.
Maximum Valve Lift (in): .650.
Damper Spring Included: No
Number of Springs Per Valve: Dual
Retainers Included: Yes
Retainer Material: Titanium
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
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.
CARB EO Number: D-747 (pdf). To see a list of qualifying vehicles, enter CARB EO Number D-747
Emissions: California EO Approved
