Trick Flow DHC 175 Dual Spring Cylinder Head No Accessory Holes SBC

Boost your small-block Chevy engine’s airflow and power with the help of Trick Flow. Their DHC 175 cylinder head combines traditional small-block styling with modern performance technology. Meaning, it preserves the straight spark plug design for a factory-like look while using a A356-T61 aluminum construction.

Features and Benefits:
- Free of accessory holes for better compatibility with custom engine builds
- Compatible with higher lift and hydraulic roller camshafts
- “Fast As Cast” intake runner technology
- CNC-machined combustion chambers
- A356-T61 aluminum construction
- Thick deck and casting walls for durability
- 1.460" dual valve spring package
- Ductile iron valve seats with multi-angle valve job
- Bronze valve guides installed

The cylinder head features 175cc intake runners alongside 60cc chambers. This helps boost low-RPM torque while supporting strong high-RPM horsepower. Because it has a dual spring setup as well, it can support higher lift and hydraulic roller camshafts. Put altogether, that makes it ideal for more aggressive street and performance builds.

Specifications:
- Combustion chamber: 60cc
- Intake runner: 175cc
- Exhaust runner: 74cc
- Max valve lift: 0.600"
- Intake valve size: 2.020"
- Exhaust valve size: 1.600"
- Valve angle: 23-degree intake / 23-degree exhaust
- Oiling style: through pushrod

Vehicle Fitment:
- Fits small-block Chevy engines (minimum 4.000" bore)