PowerPort ® 190 Cylinder Heads for Small Block Mopar Some parts are not legal for sale or use in California or other states with similar laws/regulations—see pg. 2 for details. WARNING: For Proposition 65 information, see pg. 2 PowerPort 190 cylinder heads fit all non-emissions Chrysler 318, 340, and 360 engines, including both the LA and Magnum-series, giving builders a truly ‘best of both worlds’ scenario. Like all of Trick Flow’s top-quality cylinder heads, the PowerPort 190 heads are made from A356-T61 aluminum because it’s much lighter but still every bit as strong as cast iron. The intake runners have been enhanced to increase airflow, and both intake and exhaust runners feature Trick Flow’s special CNC Street Ported treatment that combines premium quality CNC-machining with a standard resolution finish that‘s perfect for making more power. That’s not all. Newly designed rocker arm shaft mounting bosses are stronger than the OE design, and larger diameter pushrod holes have been incorporated to accommodate 3/8" pushrods for use with flat tappet and hydraulic roller camshafts. Bronze alloy valve guides, ductile iron valve seats, and multi-angle valve seats further increase performance and durability. Assembled cylinder heads include premium 11/32" stainless steel valves, Trick Flow by PAC Racing valve springs, steel valve stem locks, and have chromoly and titanium retainer options. Cylinder heads are available fully assembled or as bare castings. Sold individually. PowerPort 190 Heads, CNC Street Ported Runners, Assembled TFS-61417801-C00 1.460" dual valve springs, 190cc intake runners TFS-61417802-C00 1.550" dual valve springs, 190cc intake runners TFS-6141T783-C00 1.550" dual valve springs and titanium retainers, 190cc intake runners TFS-6141T784-C00 1.560" dual valve springs and titanium retainers, 190cc intake runners Specifications Material: A356-T61 aluminum Combustion Chamber Volume: 60cc CNC-profiled Intake Port Volume: 190cc CNC Street Ported Intake Port Location: Standard Intake Port Dimensions: 1.160" x 2.270" Intake Gaskets: Fel-Pro 1213 Intake Valve Diameter: 2.020" (TFS-61400211) Intake Valve Seat: Ductile iron (TFS-61400271) Exhaust Port Volume: 81cc CNC Street Ported Exhaust Port Location: Stock Exhaust Port Dimensions: 1.250" x 1.400" Exhaust Gaskets: Fel-Pro 1413 Exhaust Valve Diameter: 1.570" (TFS-61400212) Exhaust Valve Seat: Ductile iron (TFS-30600274) Valve Angles: 18° Valve Guide Material: Bronze alloy (TFS-52600251) Valve Seals: Viton® fluoroelastomer canister Valve Seat Angles: 45° x multi-angle Valve Spring Pocket Diameter: 1.740" Valve Spring I.D. Locators: 1.500" x .060" (TFS-21400440) Valve Spring Retainers: 7° x 1.500" o.d. chromoly steel (TFS-51400423) 10° x 1.550" o.d. chromoly steel (TFS-21400425) 10° x 1.550" o.d. titanium (TFS-214T0520) 10° x 1.550" o.d. titanium (TFS-214T0525) Valve Stem Locks: 7° machined steel (TFS-51400444) or 10° machined steel (TFS-52400444) Valve Springs, Standard: 1.460" o.d. dual spring (TFS-16893-16) 120 lbs. @ 1.900" installed height 394 lbs. @ 1.175" open 390 lbs. per inch rate .650" max. valve lift Valve Springs, Option 1: 1.545" o.d. dual spring with damper (TFS-16094-16) 154 lbs. @1.950" installed hieght 453 lbs. @ 1.250 open 427 lbs. per inch rate .680" max. valve lift Valve Springs, Option 2: 1.560" o.d. dual spring (TFS-16318-16) 240 lbs. @ 2.000" installed height 600 lbs. @ 1.280" open 500 lbs. per inch rate .700" max. valve lift Rocker Arms, LA: Harland Sharp S70025K (1.5 ratio) or Harland Sharp S70026K (1.6 ratio) Rocker Arms, Magnum: Harland Sharp S72025K (1.5 ratio) or Harland Sharp S72026K (1.6 ratio) Rocker Shaft Studs: TFS-61400613 Minimum Bore Diameter: 3.830" Cylinder Head Bolts/Studs: TFS-92030 (bolts) or TFS-61404304 (studs) Head Gaskets: TFS-61494040-040 or TFS-61494080-040 Spark Plugs: Autolite 3924 NOTE: Magnum engines must use the recommended Harland Sharp shaft mount roller rocker arms for proper rocker arm oiling. Viton® is a registered trademark of DuPont Performance Elastomers. Dyno Results PowerPort 190 Test Engine: 10.92:1 compression 365 c.i.d. LA-series engine with Trick Flow PowerPort 190 cylinder heads (TFS-61417802-C00), custom hydraulic roller camshaft (230°/236° duration @ .050"; .577"/.572" lift; 110° lobe separation), Trick Flow roller lifters (TFS-21400010), Trick Flow Track Heat® intake manifold (TFS-61400111), 750 cfm carburetor, Trick Flow billet aluminum carburetor spacer (TFS-2141501B), Hooker Super Competition headers with 13⁄4" primaries, 3" dual exhaust with Flowmaster mufflers. TFS-6141T784-C00 Airflow Results PowerPort 190 Lift Value Intake Flow CFM Exhaust Flow CFM .100" 66 54 .200" 134 121 .300" 200 181 .400" 248 213 .500" 281 231 .600" 293 237 .700" 301 240 Tests conducted at 28" of water (pressure). Bore size: 4.000"; exhaust with 17⁄8" pipe. Click Here to Shop All Small Block Mopar Products at Exhaust Port Combustion Chamber Intake Port
