Trick Flow Twisted Wedge Heads
Once you see Trick Flow's Twisted Wedge 185 cylinder heads for Ford 4.6L/5.4L 2V engines in action, you'll agree they are the only aftermarket 2V heads worth bolting on to your modular-powered Ford. The power comes from the patented Twisted Wedge combustion chamber design with the intake valve moved to the opposite side of the camshaft. The benefit is a dramatic increase in mid-lift airflow and increased piston-to-valve and valve-to-bore clearance that allow higher lift cams and larger diameter valves to be used without having to alter the bore size or flycutting pistons. Other features include OE PI-style intake inlets, patented Fast As Cast™ intake/exhaust runners that deliver near CNC-ported airflow, fully CNC-profiled combustion chambers, bulletproof ¾ in. thick decks, four-bolt replaceable cam bearing journals, full ¾ in.-reach spark plugs, 1.840 in./1.450 in. valves, powdered metal valve guides, ductile iron valve seats, lightweight chromemoly retainers and die-forged locks, beehive valve springs, and Viton® fluoroelastomer valve seals. The Twisted Wedge 185 series heads fit all 1996-2004 4.6L/5.4L 2V Romeo and Windsor engines and accept all OE-type 2V camshafts, followers, lash adjusters, and valve covers. Furthermore, 8mm end holes in the heads ensure that most OE Ford front covers will fit. Cylinder heads are available with 38cc or 44cc combustion chambers. Both versions deliver about 10:1 compression on a stock short block depending on the piston used. Twisted Wedge 185 heads have 90 lb. rate (installed height) springs for mildly modified engines. Bare cylinder heads castings are also available.
These heads can handle up to .600 lift camshafts.
These cylinder heads are not C.A.R.B. legal.
These heads are extremely nice! They're a little on the expensive side but to me they are worth every penny.
Yes, I would recommend this item to a friend!
Was this review helpful to you?
Edward K. on
I guess i will be the first to write a little bit of an in depth review for these heads on this website.
The heads out of the box look absolutely astonishing. As i began to do the pre-assembly of the heads before they go onto my shortblock instantly you begin to get very scared. You are required to thread in an assortment of pipe plugs in certain areas of the heads. Trick Flow gives you pipe plugs with some sealer already on them, but they advise you go out and get thread sealant with polytetrafluoroethylene, or PTFE for short. With both sealers on the threads, when you are trying to install the 1/8th inch pipe plugs on the deck they get EXTREMELY hard to turn after about 3/4 of the way down. You must turn them far enough so that they are not poking out past the deck. Since they are aluminum heads I had terrible anxiety, praying the threads would not strip in these expensive ass heads. Fortunately i got them all in without any issues, there are quite a few more plugs you have to install, which is VERY important you follow those steps closely.
These heads DO NOT come with rocker arms or lifters. You must buy new ones or reuse your old ones. I bought new lifters from trick flow but am reusing my stock rocker arms since they were still in great shape and currently the car is not making enough power to worry about breaking the stock rocker arms.
Installing the heads is also difficult if you are doing it with the motor in the car. A few of the exhaust side head bolts WILL NOT go in with the motor still in the car. You must have the bolts or studs installed before trying to put the heads on the block. I used small vise grips, i held the bolt up right around the top of the camshaft, used a vice grip to hold the bolt up, then let the vice grips lay on top of the camshaft. This gives you the perfect setup to gently lower your heads onto the motor without fighting the bolts, especially since these heads will scratch VERY easily, especially on the deck. The rest of the job is very easy and trick flow gives you all of the information you need to know in their packet for completing the job,
These heads are worth the money if you intend on building a very serious 2v mustang.
Trick Flow - Serious Horsepower
Horsepower doesn't happen by accident. It takes time, skill, and the right combination of parts to allow your engine to produce optimum power levels.
Trick Flow engineers use advanced Computer-Aided Design (CAD) work stations and high-tech 3D modeling to develop and analyze components quickly and accurately. Trick Flow machinists use state-of-the-art rapid physical prototyping, CNC-machining centers, and hot rodding know-how to turn designs into molds and foundry tooling.
Prototypes and products are subjected to hours of relentless testing on one of Trick Flow's dynamometers, and extensive road and race track data is gathered to guarantee parts perform as intended. Trick Flow's commitment to quality combined with a "zero defects" attitude ensures Trick Flow products will exceed your expectations.
From Lightning cylinder heads to Mustang camshafts, pistons to intake manifolds, Trick Flow is committed to making products that are designed and engineered to deliver power!