If you're trying to squeeze every bit of power out there of your Coyote engine, swapping over to gt350 cylinder heads is truthfully one of the particular best moves you may make. It's not just in regards to the name or even the prestige associated with the Voodoo engine; it's about just how this stuff actually inhale. For anyone who has spent time staring at a dyno sheet wondering where that extra 50 horsepower is hiding, the answer usually is based on the airflow. So when it comes to factory Ford parts that movement like race parts, these heads are pretty much the gold standard.
Why Everyone Wants the GT350 Set up
The GT350, with its high-revving 5. 2L Voodoo V8, changed the overall game for Ford lovers. While the flat-plane crank got just about all the headlines, the real magic was happening up top. The gt350 cylinder heads are a significant departure through the standard Mustang GRAND TOURING heads. From the particular factory, these items come with Cnc machined ports. If you've ever paid a shop to hand-port some heads, you understand how expensive and time-consuming that is definitely. Ford basically do the hard work for us right upon the production line.
The intake and exhaust ports are usually shaped to proceed air at higher velocities, which is exactly what you need if you are planning on re-writing your engine history 7, 000 or even 8, 000 RPM. A standard 5. 0L head starts in order to choke out as you get in to the top atmosphere of the rev variety, but the GT350 versions just keep pulling. It's that feeling of the car never wanting to stop increasing that makes this particular swap so addictive.
The Techie Bits That Matter
It isn't just about the size of the holes; it's about what's inside all of them. These heads feature massive valves compared to the standard Coyote. We're referring to 38. 3mm consumption valves and 32. 5mm exhaust valves. To put that will in perspective, they're designed to fill the 5. 2-liter displacement, when you place them on a 5. 0-liter, the motor feels like it has a pair associated with oversized lungs.
One of the particular coolest things—and some thing that often gets overlooked—is the valvetrain. The gt350 cylinder heads use lightweight components that are built with regard to high-RPM stability. Whenever you're bouncing off an 8, two hundred and fifty RPM rev limiter, the last thing you want is valve float. Ford producer used specific suspension springs and retainers to ensure everything stays within sync even whenever you're beating on the car in the track. In case you're building the car for road racing or also just aggressive road driving, that serenity of mind is usually worth the access price alone.
Fitting Them upon a Standard Coyote
Now, here's where things obtain a little bit difficult. You can't just buy a set of gt350 cylinder heads , bolt them onto the Gen 1 or Gen 2 Coyote, and call it up the day. Well, you may , but there are several "gotchas" you require to be conscious of.
The greatest hurdle is usually the valvetrain suitability, specifically the camshafts. The GT350 uses an unique shooting order and different cam phasers in comparison to the standard 5. 0L. Most guys doing this swap uses the GT350-specific camshafts or even high-end aftermarket cams designed to work with these castings. You'll also need in order to look at the head bolts. The GT350 heads are designed for 12mm head bolts, whereas the earlier Coyotes used 11mm bolts. You'll need specialized head studs (like the ones from ARP) that have the step within them to make everything fall into line perfectly and stay clamped down under pressure.
Also, don't forget the particular intake manifold. Due to the fact the ports within the gt350 cylinder heads are slightly different in form and location, a standard Mustang GT intake won't simply line up perfectly. You're going in order to want the GT350 intake manifold in order to match. It's the bit of a "while I'm in there" situation—once a person decide to perform the heads, you're basically committing to the whole top-end environment.
Real Globe Performance Gains
So, what does all this function actually get a person? If you're running a naturally equiped setup, you may expect the very healthy jump in top-end strength. We're talking between 30 to 50 horsepower depending on your other mods and your tune. Yet the peak quantities don't tell the particular whole story. The way the car makes power changes. It feels much more linear, more like a race car than the torque-heavy street easy riding bike.
If you're running a centrifugal supercharger or perhaps a turbo, the gains are actually more dramatic. Increase loves airflow. The less restriction you might have in the cylinder head, the much less work the blower needs to do in order to fill the cyl. This implies lower intake temperatures and even more efficient power. Many guys find that they can make the particular same power along with less boost just by switching in order to gt350 cylinder heads , which is often better for engine longevity.
Could it be Worth the Hassle?
This will be the question everybody asks. Let's end up being real: this isn't a cheap update. When you buy the heads, the cams, the mechanical seals, the studs, plus the intake manifold, you've spent a significant chunk of change. If you're just looking for the little more pep for your day-to-day commute, this might be overkill. A person could probably get where you would like to choose a simple E85 tune and a chilly air intake.
However, if a person are building the "forever" engine or a dedicated track toy, it's completely worth it. There's something special regarding using OEM-engineered parts that are made to withstand the rigors of a production performance vehicle. Aftermarket heads are usually great, however they may sometimes have fitment issues or need custom work that drives the cost up even more. With the gt350 cylinder heads , you're getting Ford's greatest engineering in a package that is usually relatively easy to source.
Items to Check Before You Buy
If you're scouring the forums or auction web sites for an used set, be careful. They are high-performance parts, plus they often arrive out of vehicles that were driven well, exactly just how they were meant to be driven. Check for any signs associated with heat stress or cracking around the control device seats. Because the Voodoo engine is known regarding its vibration (thanks to that flat-plane crank), you desire to make sure the heads haven't suffered any weird fatigue.
Preferably, you want in order to purchase them brand brand-new in the package from a Ford producer Performance dealer. It's more expensive, but you get the satisfaction knowing the surfaces are flat plus the valves are seated perfectly. If you do move the used path, take them straight in order to a machine store. Have them pressure tested and decked. It's a small price to pay out to avoid needing to pull the engine apart again fourteen days later because associated with a leaky head gasket.
Last Thoughts on the Swap
From the end associated with the day, installing gt350 cylinder heads is regarding more than just an amount on a piece of papers. It's about the character of the car. It transforms the particular Coyote from the great modern V8 into something that feels truly amazing. The way this might sound as it passes 7, 500 RPM—that mechanical scream—is something you simply don't get using the stock best end.
It's a project that requires some planning plus a decent budget, however the results speak regarding themselves. Whether you're chasing lap instances or just need the baddest Mustang at the local meet, these heads are the foundation of a seriously fast Ford. Just make sure you've got a tuner who knows what they're doing, due to the fact once you start moving this much air, the pc wants to be upon its A-game in order to keep everything operating smoothly. Don't cut corners for the hardware, take your time with the install, plus you'll be rewarded having an engine that will seems like it goes on a starting grid.