Trick Flow® Ultra 18® 250 Cylinder Heads for Small Block Chevrolet TFS-3181T001-C01

Cylinder Head, Ultra 18®, CNC Competition Ported, 56cc CNC Chambers, Ti Retainers, Small Chevy, Each

Part Number:
TFS-3181T001-C01
Part Type:
UPC:
842645108679
Combustion Chamber Volume (cc):
56
Intake Runner Volume (cc):
250cc
Exhaust Runner Volume (cc):
100cc
Cylinder Head Style:
Assembled
Cylinder Head Material:
Aluminum
Intake Port Shape:
Rectangular
Intake Valve Diameter (in):
2.150 in.
Cylinder Head Finish:
Natural
CNC-Machined Combustion Chamber:
Yes
CNC-Machined Intake Runner:
Yes
CNC-Machined Exhaust Runner:
Yes
Combustion Chamber Style:
Heart
Intake Port Location:
Raised
Exhaust Port Shape:
Oval
Exhaust Port Location:
Raised
Spark Plug Style:
Angle
Intake Valves Included:
Yes
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):
1.560 in.
Damper Spring Included:
Yes
Number of Springs Per Valve:
Dual
Retainers Included:
Yes
Retainer Material:
Titanium
Locks Included:
Yes
Lock Style:
10 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:
Perimeter bolt
Accessory Bolt Holes Drilled:
Yes
Intake Valve Angle:
18
Exhaust Valve Angle:
18
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
Heat Crossover:
No
Quantity:
Sold individually.
Notes:
Requires Jesel or T&D shaft mount rocker arm system, offset 0.550 in. for the intake side and 0.220 in. for the exhaust side. Will also need special 18 degree intake manifold and custom-built headers.

Trick Flow Ultra 18® 250 cylinder heads with 18 degree runners make serious horsepower—power ideal for drag and high-rpm circle track racing. Right out of the box, these heads deliver higher airflow numbers than fully prepped 23 degree heads.
Features include Trick Flow’s CNC-profiled combustion chambers and CNC Competition Ported runners with a premium high resolution surface finish for maximum flow and performance.

Ultra 18 250 heads accept most current 18 degree intake manifolds, headers, and other components. They require the use of offset shaft-mounted rocker arms and a mechanical roller camshaft with offset intake lifters. The heads are available fully assembled or as bare castings. Sold individually.

Warranty

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