Instruction Sheets for Part Number TFS-5191B001-M38
Trick Flow® Twisted Wedge® 185 Cylinder Heads for Ford 4.6L/5.4L 2V TFS-5191B001-M38
Part Number: TFS-5191B001-M38
Trick Flow® Twisted Wedge® 185 Cylinder Heads for Ford 4.6L/5.4L 2V
Cylinder Head, Twisted Wedge® 185, Fast As Cast®, Bare, 38cc CNC Chambers, Ford 4.6/5.4L 2V, Each
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Estimated Ship Date: May 12, 2026
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Overview
Brand:
Manufacturer's Part Number:
TFS-5191B001-M38
Part Type:
Product Line:
Summit Racing Part Number:
TFS-5191B001-M38
UPC:
842645114540
Combustion Chamber Volume (cc):
38
Intake Runner Volume (cc):
185cc
Exhaust Runner Volume (cc):
93cc
Cylinder Head Style:
Bare
Cylinder Head Material:
Cast aluminum
Intake Valve Diameter (in.):
1.840 in.
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:
D-port
Exhaust Port Location:
Standard
Spark Plug Style:
Angle
Intake Valves Included:
No
Exhaust Valves Included:
No
Exhaust Valve Diameter (in.):
1.450 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
Accessory Bolt Holes Drilled:
Yes
Intake Valve Angle:
9
Exhaust Valve Angle:
9
Valve Guides Included:
Yes
Valve Guide Material:
Powdered metal
Valve Seats Machined:
No
Valve Seat Machine Style:
Un-machined seat
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:
Accepts all Romeo and Windsor valve covers plus most stock style Ford front covers.
Trick Flow® Twisted Wedge® 185 Cylinder Heads for Ford 4.6L/5.4L 2V
Trick Flow® Twisted Wedge® 185 series cylinder heads are the best aftermarket heads for modular-powered Fords. The secret: Twisted Wedge combustion chambers and intake valves moved on the opposite side of the cam. The result is dramatic increases in mid-lift airflow, piston-to-valve clearance, and valve-to-bore clearance for using higher lift cams and larger valves without altering bore size or flycutting pistons. Other exclusive features include OE PI-style intake inlets, Fast As Cast® runners that deliver near-CNC-ported airflow, CNC-profiled combustion chambers, 3/4" thick decks, patented replaceable cam bearing journals, and 3/4"-reach spark plugs.
Twisted Wedge 185 heads are intended for mildly modified engines. They fit all 2V Romeo and Windsor engines and accept all OE-style camshafts, followers, lash adjusters, valve covers, and most OE Ford front covers. The heads are available fully assembled or as bare castings. Sold individually.
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