Trick Flow Specialties TFS-30210007 - Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet

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Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet TFS-30210007

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

Part Number:
TFS-30210007
Part Type:
UPC:
0842645120459
Cylinder Head Style:
Assembled
Cylinder Head Material:
Aluminum
Intake Port Shape:
Rectangular
Intake Valve Diameter (in):
2.020 in.
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:
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.

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.

Warranty

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