Cylinder Head Style:Assembled
Cylinder Head Material:Aluminum
Cylinder Head Finish:Natural
Combustion Chamber Volume (cc):70
CNC-Machined Combustion Chamber:Yes
Intake Runner Volume (cc):245cc
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):2.100 in.
Exhaust Valves Included:Yes
Exhaust Valve Diameter (in):1.600 in.
Valve Springs Included:Yes
Maximum Valve Lift (in):0.700 in.
Outside Diameter of Outer Spring (in):1.300 in.
Damper Spring Included:No
Number of Springs Per Valve:Dual
Lock Style:7 degree
Valve Stem Seals Included:Yes
Rocker Arm Studs Included:No
Rocker Arms Included:No
Rocker Arm Nuts 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:Bronze
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
Notes:These cylinder heads are not designed as a stock replacement, they can only be used on LS-based engines with a minimum bore diameter of 4.125 in. Must be used with roller rocker arms.
Trick Flow GenX® 245 cathedral port cylinder heads are fully CNC-machined to significantly improve the performance of extreme street and race LSX engines. 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. Top-of-the-line CNC Competition Ported runners have a premium high resolution surface finish for maximum flow and performance. 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. Material was added at the rocker arm mounting points to increase high-rpm valvetrain stability. Trick Flow GenX 245 cylinder heads are available fully assembled or as bare castings.