Trick Flow introduces cool Street/Strip heads for the 4.6L/5.4L Modular SOHC.
It had to happen sooner or later. The folks who brought us killer Twisted Wedge small-block Ford heads are now bringing us the same magic for the 4.6L/5.4L SOHC Modular V-8.
Trick Flow calls these guys the Street/Strip Cylinder Head for high-winding Modular V-8s. These heads feature Trick Flow's patented Twisted Wedge chamber design coupled with an intake valve moved to the opposite side of the camshaft like Ford has done with the 2004-10 3V head common on the S197 Mustang GT. The benefit here is a dramatic increase in mid-lift airflow, plus increased piston-to-valve and valve-to-bore clearance that allows you to go with a higher lift camshaft and larger valve diameters without having to alter bore size or flycut the pistons.
These heads are designed based on the P.I. head which means you can use the P.I. induction system. Trick Flow's patented "Fast As Cast" intake/exhaust ports deliver virtual CNC-ported airflow right out of the box. Expect CNC-profiled combustion chambers as well. Do you like "extra thick"? Expect to see 3/4" thick decks, four-bolt replaceable cam bearing journals, full 3/4" reach spark plugs (no more blowouts or inserts), stainless steel 1.840"/1.450" intake/exhaust valves, Trick-Alloy powdered metal valve guides, ductile iron valve seats for durability, lightweight chromemoly retainers and locks, dual valve springs good for camshafts up to .600" lift, and Viton valve seals.
Although Trick Flow fits these heads with dual valve springs, you should always match your camshaft profile and valve spring pressure for best results. You don't want too much spring pressure nor too little.
These heads are designed for all 4.6L/5.4L SOHC Romeo and Windsor engines and require no oil passage modifications. Most Ford timing covers will fit these heads as well thanks to 8mm bolt holes. Heads for P.I. engines (1999-up) have 38cc chambers, yielding 10.0:1 compression. Non P.I. (1996-98) heads have 44cc chambers and 10.0:1 compression.
Dyno testing yielded 390.2 horsepower at 6,000 rpm. Peak torque was 373.4 ft/lbs at 5,600 rpm.
For more information contact Trick Flow at 330/630-1555 or visit the website at www.TrickFlow.com.