Part Number:

TFS-51410004-M58

UPC:

842645111136

Combustion Chamber Volume (cc):

58

Intake Runner Volume (cc):

170cc

Exhaust Runner Volume (cc):

66cc

Cylinder Head Style:

Assembled

Cylinder Head Material:

Aluminum

Intake Port Shape:

Rectangular

Intake Valve Diameter (in.):

2.020 in.

Cylinder Head Finish:

Natural

CNC-Machined Combustion Chamber:

Yes

CNC-Machined Intake Runner:

No

CNC-Machined Exhaust Runner:

No

Combustion Chamber Style:

Twisted Wedge®

Intake Port Location:

Standard

Exhaust Port Shape:

Square

Exhaust Port Location:

Standard

Intake Valves Included:

Yes

Exhaust Valves Included:

Yes

Exhaust Valve Diameter (in.):

1.600 in.

Valve Springs Included:

Yes

Maximum Valve Lift (in.):

0.600 in.

Outside Diameter of Outer Spring (in.):

1.460 in.

Damper Spring Included:

Yes

Number of Springs Per Valve:

Dual

Retainers Included:

Yes

Retainer Material:

Chromoly steel

Locks Included:

Yes

Lock Style:

10 degree

Valve Stem Seals Included:

Yes

Rocker Arm Studs Included:

Yes

Rocker Arm Nut Thread Size:

3/8 in.-24

Rocker Arms Included:

No

Rocker Arm Nuts Included:

No

Guideplates Included:

Yes

Guideplate Pushrod Size:

5/16 in.

Accessory Bolt Holes Drilled:

Yes

Intake Valve Angle:

15

Exhaust Valve Angle:

17

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:

Yes

Quantity:

Sold individually.

Notes:

Designed for hydraulic roller camshafts. Trick Flow twisted wedge pistons are required for use with these heads to allow for piston to valve clearance. Valve cover rail is raised .350 in. over stock.

CARB EO Number:

D-747-1

Emissions:

California EO Approved

Trick Flow’s legendary Twisted Wedge® 170 series cylinder heads are better than ever! The A356-T61 aluminum castings have been redesigned on the exhaust side to improve strength and water jacket integrity for durability in street and entry level strip applications. All of the unique features that made Twisted Wedge series heads so dominant in high performance and racing are still here—Twisted Wedge combustion chambers and valve layout, high-flow/high-velocity intake runners, and top-quality valvetrain components—plus CNC-profiled combustion chambers with port-to-valve seat blending (bowl blending) and refined Fast As Cast® runners that deliver near-CNC-ported power and airflow at cast head prices.

Certain Twisted Wedge 170 heads are emissions-legal under CARB E.O. #D-747-1 for 1996 and earlier Ford 289, 302,
and 351W engines. The heads are available fully assembled or as bare castings. Sold individually.

TFS-51410004-M58

$734.99Price