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Instruction Sheets for Part Number TFS-3021B002
Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet TFS-3021B002
Part Number: TFS-3021B002
Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet
Cylinder Head, DHC™ 175, Fast As Cast®, Bare, No Accessory Bolt Holes, Small Chevy, Each
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Estimated Ship Date from OH, NV: Monday 10/26/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
TFS-3021B002
Part Type:
Product Line:
Summit Racing Part Number:
TFS-3021B002
UPC:
0842645120541
Combustion Chamber Volume (cc):
60
Intake Runner Volume (cc):
175cc
Exhaust Runner Volume (cc):
74cc
Cylinder Head Style:
Bare
Cylinder Head Material:
Cast aluminum
Intake Port Shape:
Rectangular
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:
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:
No
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
Cylinder Head Color:
Natural
Steam Holes Drilled:
No
Oiling Style:
Through pushrod
Machined for O-Ring:
No
Heat Crossover:
No
Remanufactured:
No
Quantity:
Sold individually.
Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet
No longer will fans of the small block Chevy have to choose between vintage looks or modern cylinder head power—Trick Flow® 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. To keep with the vintage design, the heads are available with 69' later or without 68' earlier accessory bolt holes cast into them. 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.
Trick Flow® DHC™ 175 cylinder heads are available fully assembled or as bare castings. Sold individually.
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