Trick Flow Specialties DHC 200 Aluminum Cylinder Heads combine the classic looks of 1960s-era ‘camel hump’ cylinder heads with CNC-ported airflow capabilities to give a small block Chevy a big dose of horsepower. You can see the heads for yourself at the Trick Flow Specialties booth #23011 in the Race and Performance Section, Central Hall.
Patterned after Trick Flow’s DHC 175 Aluminum Cylinder Heads, the DHC 200 Cylinder Heads have exterior touches like straight spark plug holes, raised markings on the ends, and a choice of ends with or without drilled accessory holes. Hit them with a shot of Chevy Orange paint and (almost) no one will be the wiser.
Trick Flow DHC 200 Cylinder Heads feature CNC Street Ported 200cc intake and 74cc exhaust runners, 64cc CNC-profiled combustion chambers, and 2.055-inch intake/1.60-inch exhaust stainless steel valves. Proprietary valve profiles and multi-angle valve seat machining maximize flow at low lift. Extra thick decks and walls increase casting strength for peace of mind.
When it comes to power, the DHC 200 Cylinder Heads have it all over those old cast iron heads. On the dyno, a 10.2:1 compression, 384 CID engine with DHC 200 heads, a Trick Flow Track Max™ hydraulic roller camshaft, 1.6 ratio roller rocker arms, and a 750 CFM carburetor on an
Edelbrock Victor Jr. intake manifold made 536 peak horsepower and 473 lbs.-ft. of peak torque.
Trick Flow DHC 200 Cylinder Heads are available fully assembled with a choice of valve springs or as bare castings. They fit 302, 327, 350 and 400 CID Gen I small blocks and stroker combinations with a four inch or larger cylinder bore.
Material: A356-T61 aluminum
Intake Port: 200cc CNC Street Ported
Intake Port Location: Stock, 1.280″ x 2.090″
Exhaust Port: 74cc CNC Street Ported
Exhaust Port Location: Stock, 1.300″ x 1.500″
Combustion Chamber: 64cc CNC-profiled
Valves: 2.055″ intake/1.600″ exhaust, stainless steel
Valve Springs, Hydraulic Flat Tappet Cam: 1.470″ o.d. single with damper, .540″ max valve lift
Valve Springs, Hydraulic Roller Cam: 1.460″ o.d. dual with damper, .600″ max valve lift
Valve Seats: Ductile iron
Valve Guide Material: Bronze alloy
Valve Seals: Viton® fluoroelastomer
Rocker Arm Studs: 7/16″
Rocker Arms: Trick Flow #31400520 (1.5 ratio) or #31400521 (1.6 ratio)
Cylinder Head Bolts: Trick Flow #92000
Head Gaskets: Trick Flow #30494060-040
Intake Gaskets: Fel-Pro #1205
Exhaust Gaskets: Fel-Pro #1404
Spark Plugs: Autolite #3924 or #4252
Pushrod Length: Longer than stock required
Trick Flow Specialties