Additional Images

Trick Flow DHC SBC 175cc Aluminum Cylinder Heads for Small Block Chevrolet - With Accessory Bolt Holes

No longer will fans of the small block Chevy have to choose between vintage looks or modern cylinder head power—Trick Flow's DHC 175 cylinder heads give you both!

Made from premium grade, lightweight A356-T61 aluminum, DHC 175 heads feature the exterior styling and straight spark plug holes that deliver the nostalgic appearance of the original factory performance 186, 291, 461, 462 "double hump" or "camel back" castings that customers want. 60cc CNC-profiled combustion chambers combined with a state of the art valve job and CNC blended bowl work 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. Ductile iron valve seats for use with unleaded fuel, stainless steel valves, bronze alloy valve guides, multi-angle valve seat machining, and decks and walls cast extra thick for increased casting strength and to provide extra room for porting round out the features. These TFS-30210007 feature accessory bolt holes for 69' and later setups. Search our store for TFS-30210003 for 68' earlier without accessory bolt holes.
Was: $899.00
Sale: $749.00
Save: 17%
Save: $150.00

Free Basic Shipping


Cylinder Head, DHC 175, Fast As Cast, Assembled, 1.460 in. Springs, Accessory Bolt Holes, Small Chevy, Each

Brand: TFS - Trick Flow Specialties

Manufacturer's Part Number: TFS-30210007

Combustion Chamber Volume (cc): 60

Intake Runner Volume (cc): 175cc

Exhaust Runner Volume (cc): 74cc

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: Heart

Intake Port Location: Standard

Exhaust Port Shape: D-port

Exhaust Port Location: Standard

Spark Plug Style: Straight

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: No

Number of Springs Per Valve: Dual

Retainers Included: Yes

Retainer Material: Chromoly steel

Locks Included: Yes

Lock Style: 7 degree

Valve Stem Seals Included: Yes

Valve Stem Seal Style: Positive stop

Rocker Arm Studs Included: Yes

Rocker Arm Nut Thread Size: 7/16-20 in.

Rocker Arms Included: No

Rocker Arm Nuts Included: No

Guideplates Included: Yes

Guideplate Pushrod Size: 5/16 in.

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: Yes

Quantity: Sold individually.

Notes: For use with a minimum bore diameter of 4.000 in.

Shipping Information

  • Item Requires Shipping
  • 40.0 lbs.
  • W12.0000” x H12.0000” x L24.0000”
  • Free Basic Shipping

  • Have a question? Ask the Pros
  • 877-514-9494Mon - Fri 8:00 AM - 4:00 PM PST