SBC DHC 175cc Cylinder Head 60cc Assembled

The Trick Flow SBC DHC 175cc Cylinder Head 60cc Assembled is a fully machined and assembled Small Block Chevy performance head engineered for serious engine builders and high-performance enthusiasts. With a 175 cubic centimeter intake chamber and 60 cubic centimeter combustion chamber, this head delivers the flow characteristics and combustion efficiency demanded in competition and street performance applications. The assembly comes ready for installation—no additional valve work, porting, or chamber finishing required.

The head features 2.020-inch intake valves and 1.600-inch exhaust valves paired with 1.470-inch valve springs, a specification set optimized for power band response and durability at sustained RPM. The straight-plug design simplifies ignition system integration and cooling passage efficiency. Cast from aluminum, the head balances weight savings with thermal stability—critical for maintaining consistent combustion temperatures across load ranges. Trick Flow's precision manufacturing ensures tight tolerances and repeatable performance across multiple units, a necessity for engine builders fielding identical powerplants across fleet operations or competitive series.

This cylinder head suits engine builders and performance shops assembling Small Block Chevy platforms for bracket racing, street cruisers, engine swaps, and power plant rebuilds where factory heads compromise modern performance demands. The pre-assembled condition eliminates valve seat micro-fracturing risk inherent in used OEM cores and reduces build timeline for shops under production pressure. Specification selection—intake volume, valve sizing, and chamber geometry—directly influences fuel economy, throttle response, and peak horsepower band placement, making cylinder head selection a critical engineering decision rather than a commodity component swap.