Trick Flow PowerPort 270 heads for big block Mopar are far better than stock and other aftermarket aluminum heads for several reasons. The PowerPort 270 heads rocker shaft and runner areas have been enhanced to increase strength, and the oil holes for the rocker shafts were relocated to improve oiling. To greatly reduce weight and increase strength, the heads are cast in premium grade A356-T61 aluminum. Other advantages of these heads include clearance for 3/8" pushrods, ductile iron valve seats, bronze alloy valve guides, and multi-angle valve seat machining performed on precision Serdi equipment. The PowerPort 270 heads feature larger, raised Max Wedge-style intake runners that provide a straighter path to the valve for improved airflow. The runners are treated to Trick Flow’s signature high resolution CNC Competition Ported surface finish that guarantees proper dimensional accuracy with balanced flow from runner-to-runner for maximum power potential.
Assembled cylinder heads come with premium 11/32" stainless steel valves, Trick Flow by PAC Racing valve springs, chromoly and titanium retainer options, and 7° or 10° steel valve stem locks. Trick Flow designed the PowerPort 270 heads to use all factory-style big block Mopar pistons, roller rocker arms, and headers. A Max Wedge-style intake manifold is recommended for best performance.
Note: This head is a Bare Casting, Sold individually. Specs:
Combustion Chamber Volume (cc): 78
Intake Runner Volume (cc): 270cc
Exhaust Runner Volume (cc): 74cc
Cylinder Head Style: Bare
Cylinder Head Material: Cast aluminum
Intake Port Shape: Rectangular
Intake Valve Diameter (in.): 2.190 in.
CNC-Machined Combustion Chamber: Yes
CNC-Machined Intake Runner: Yes
CNC-Machined Exhaust Runner: Yes
Combustion Chamber Style: Heart
Intake Port Location: Standard
Exhaust Port Shape: Oval
Exhaust Port Location: Standard
Intake Valves Included: No
Exhaust Valves Included: No
Exhaust Valve Diameter (in.): 1.760 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: Perimeter bolt
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 15
Exhaust Valve Angle: 15
Valve Guides Included: Yes
Valve Guide Material: Bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through head
Machined for O-Ring: No
Heat Crossover: No
Remanufactured: No
Quantity: Sold individually
Notes: Longer than stock pushrods may be required. Minimum bore size is 4.320 in.
