Trick Flow 265cc CNC Ported Cylinder Heads for GM LS 1997+

Total Engine Airflow
Current Stock:
Drop-Ships Directly from Manufacturer

The 265cc Drag head. TEA's largest offering in a Cathedral Port design. Built using Trick Flow's "LSX-R" casting. The casting has raised spring pockets, rocker pads, and valve cover rails to allow for high lift cams and valve train components. It is only available in a 6 bolt version. This head is designed for drag race only and uses TEA's
competition only 55 Deg. Valve job and Titanium intake valve. This creates great airflow benefits at high valve lifts -(.700-Up). We also assemble this head using the best components Victory-1 valves, .800" PAC springs, and Manley Retainers, locks, and locators. We also can custom build any combination you request too. Head comes standard with 64cc chambers.

Options like beryllium copper seats, Springs-PSI, Comp, Nextek, etc. Are available.

New: Larger Nitrous exhaust port now available.


Standard Features
Material: A356-T6 Aluminum
Combustion Chamber Volume: 64cc CNC-profiled Standard
Intake Port Volume: 265cc CNC Ported
Intake Port Location: OEM
Intake Valve Diameter: 2.10
Intake Valve Material: Titanium
Intake Valve Seat: Interlocking Ductile iron
Exhaust Port Volume: 85cc CNC Ported
Exhaust Port Location: OEM
Exhaust Port Dimensions: 1.700" x 1.550"
Exhaust Gaskets: Stock Gm
Exhaust Valve Diameter: 1.600"
Exhaust Valve Material: Stainless Steel
Exhaust Valve Seat: Ductile iron
Valve Guide Material: Bronze alloy
Valve Seals: Viton® fluoroelastomer
Minimum Bore Diameter: 4.155"
Cylinder Head Bolts: OE Length
Spark Plugs: NGK-TR6
Valve Covers: OE bolt pattern, raised 0.200"
Lift Intake Exhaust NO2 Exh.
0.100 59 58 55
0.200 128 129 122
0.300 210 189 199
0.400 281 233 250
0.500 340 256 277
0.600 352 267 290
0.700 368 272 298
0.800 377 274 303
0.900 382 277 305
1.000 388 279 306
* Tests conducted at 28" of water, 4.155" bore, 2.0" Exh. pipe