Nostalgic appearance—check.
Modern performance—check.
The best of both—checkmate!
Trick Flow’s DHC 175 cylinder heads give small block Chevy enthusiasts a new performance option. No longer will anyone have to choose between vintage looks or modern cylinder head power—with DHC 175 heads you get both!
DHC 175 heads are made from premium grade A356-T61 aluminum and have the exterior styling and straight spark plug holes that deliver the nostalgic appearance customers want. On the inside, 60cc CNC-profiled combustion chambers with blended bowl machining under the valves and small cross-section intake runners promote low-RPM torque increases and boost high-RPM horsepower. The runners are finished with Trick Flow’s superior Fast As Cast® process that precisely duplicates the runner profile and performance levels of fully CNC-ported heads without the added machining cost. In keeping with the vintage design, the heads are available with or without accessory bolt holes cast into them.
Other performance improvements include bronze alloy valve guides, ductile iron valve seats, and multi-angle valve seat machining on precision Serdi® equipment. Plus, the decks and walls are cast extra thick to increase casting strength and provide plenty of material for future porting.
Trick Flow DHC 175 cylinder heads are available fully assembled or as bare castings. Sold individually.
Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet TFS-3021B006
Cylinder Head, DHC™ 175, Fast As Cast®, Bare, Accessory Bolt Holes, Small Chevy, Each
Part Number:
TFS-3021B006
Part Type:
UPC:
0842645120558
Cylinder Head Style:
Bare
Cylinder Head Material:
Aluminum
Intake Port Shape:
Rectangular
Cylinder Head Finish:
Natural
Combustion Chamber Volume (cc):
60
CNC-Machined Combustion Chamber:
Yes
Intake Runner Volume (cc):
175cc
Exhaust Runner Volume (cc):
74cc
CNC-Machined Intake Runner:
No
CNC-Machined Exhaust Runner:
No
Combustion Chamber Style:
Heart
Intake Port Location:
Standard
Exhaust Port Shape:
D-port
Exhaust Port Location:
Standard
Spark Plug Style:
Straight
Intake Valves Included:
No
Exhaust Valves Included:
No
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:
23
Exhaust Valve Angle:
23
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.
Suggested Parts
Parts that may improve the performance or installation of part number TFS-3021B006
Trick Flow Specialties TFS-9100 - Trick Flow® Cylinder Head Work Stands
Cylinder Heads, Work Stands, Pair
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Trick Flow Specialties TFS-16315-16 - Trick Flow® by PAC Racing Dual Valve Springs
Valve Springs, PAC Racing, Dual, 1.460 in. Outside Diameter, 452 lbs./in. Rate, 1.013 in. Coil Bind, Set of 16
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Trick Flow Specialties TFS-51400252 - Trick Flow® Valve Guides
Valve Guides, Intake/Exhaust, Bronze, Ford, Small Block, Twisted Wedge®,Track Heat® Heads, Set of 16
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