Availability
Trick Flow Specialties Cylinder Heads
Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet
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.
$649.99
Trick Flow® Twisted Wedge® 170 Cylinder Heads for Small Block Ford
Trick Flow’s legendary Twisted Wedge 170 series cylinder heads are back and better than ever! The updated A356-T61 machined castings are borrowed from Trick Flow’s 11R series head lineup, bringing with it increased strength thanks to a .625" thick deck and a great-looking, billet-like appearance. The groundbreaking Twisted Wedge combustion chamber moves the intake valves away from the cylinder walls to reduce valve shrouding and significantly enhance high-lift flow. Altered 15° intake/17° exhaust valve angles tighten the combustion chamber to increase compression while improving piston-to-valve clearance. That allows the use of higher lift cams with stock pistons. CNC-profiled combustion chambers with relocated spark plug locations optimize combustion efficiency, extracting more power with less ignition timing and reducing the potential for detonation. The choice of 58cc or 61cc combustion chamber volumes allow builders to dial-in the perfect compression ratio. High-efficiency, Fast As Cast® runners feature a competition level, multi-angle valve job for near-CNC-ported power and airflow at cast head prices. Assembled Twisted Wedge 170 cylinder heads arrive ready-to-run out of the box with top-quality valvetrain components to ensure great durability and longevity. This includes stainless steel valves, bronze guides, PAC Racing valve springs, thread-in 3/8" or 7/16" rocker studs, and chromoly retainers. Some Twisted Wedge 170 cylinder heads are emissions-legal under CARB E.O. #D-747-1 for 1996 and earlier Ford 289, 302, and 351W engines. Cylinder heads are available fully assembled or as bare castings. Sold individually.
$649.99
Trick Flow® Twisted Wedge® Track Heat® 170 Cylinder Heads for Small Block Ford
Trick Flow’s legendary Twisted Wedge 170 series cylinder heads are back and better than ever! The updated A356-T61 machined castings are borrowed from Trick Flow’s 11R series head lineup, bringing with it increased strength thanks to a .625" thick deck and a great-looking, billet-like appearance. The groundbreaking Twisted Wedge combustion chamber moves the intake valves away from the cylinder walls to reduce valve shrouding and significantly enhance high-lift flow. Altered 15° intake/17° exhaust valve angles tighten the combustion chamber to increase compression while improving piston-to-valve clearance. That allows the use of higher lift cams with stock pistons. CNC-profiled combustion chambers with relocated spark plug locations optimize combustion efficiency, extracting more power with less ignition timing and reducing the potential for detonation. The choice of 58cc or 61cc combustion chamber volumes allow builders to dial-in the perfect compression ratio. High-efficiency, Fast As Cast® runners feature a competition level, multi-angle valve job for near-CNC-ported power and airflow at cast head prices. Assembled Twisted Wedge 170 cylinder heads arrive ready-to-run out of the box with top-quality valvetrain components to ensure great durability and longevity. This includes stainless steel valves, bronze guides, PAC Racing valve springs, thread-in 3/8" or 7/16" rocker studs, and chromoly retainers. Some Twisted Wedge 170 cylinder heads are emissions-legal under CARB E.O. #D-747-1 for 1996 and earlier Ford 289, 302, and 351W engines. Cylinder heads are available fully assembled or as bare castings. Sold individually.
$649.99