Instruction Sheets for Part Number TFS-4141B804-C02
Trick Flow® PowerPort® 365 Cylinder Heads for Big Block Chevrolet TFS-4141B804-C02
Part Number: TFS-4141B804-C02
Trick Flow® PowerPort® 365 Cylinder Heads for Big Block Chevrolet
Cylinder Head, PowerPort® 365, CNC Competition Port, Bare, 119cc CNC, Big Chevy, Each
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Estimated Ship Date: May 12, 2026
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Overview
Brand:
Manufacturer's Part Number:
TFS-4141B804-C02
Part Type:
Product Line:
Summit Racing Part Number:
TFS-4141B804-C02
UPC:
842645109614
Combustion Chamber Volume (cc):
119
Intake Runner Volume (cc):
365cc
Exhaust Runner Volume (cc):
135cc
Cylinder Head Style:
Bare
Cylinder Head Material:
Cast aluminum
Intake Port Shape:
Rectangular
Intake Valve Diameter (in.):
2.350 in.
CNC-Machined Combustion Chamber:
Yes
CNC-Machined Intake Runner:
Yes
CNC-Machined Exhaust Runner:
Yes
Combustion Chamber Style:
Open chamber
Intake Port Location:
Standard
Exhaust Port Shape:
Round
Exhaust Port Location:
Raised
Spark Plug Style:
Angle
Intake Valves Included:
No
Exhaust Valves Included:
No
Exhaust Valve Diameter (in.):
1.880 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:
24/4
Exhaust Valve Angle:
15/4
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.
Trick Flow® PowerPort® 365 Cylinder Heads for Big Block Chevrolet
Perfect for all high performance street/strip, racing, and marine applications, Trick Flow PowerPort® 365 cylinder heads for big block Chevy deliver exceptional power potential and competition level durability. Features include rectangular intake runners for strong mid- to high-rpm performance, fully CNC-profiled, heart-shaped combustion chambers, CNC bowl blended valve seat transitions, 24 degree intake valve angles with 4 degree side cants for additional airflow volume, adjustable guideplates, and premium quality, high-strength aluminum castings. PowerPort 365 heads are best suited for 500 plus cubic inch extreme performance engines. The heads include top-of-the-line CNC Competition Ported runners with a high resolution finish for maximum airflow and power and are assembled with the highest quality valvetrain components for ultimate endurance in all operating conditions.
Cylinder heads are available fully assembled or as bare castings. Sold individually.
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