The 2005-10 V6 Mustang featured some much needed performance upgrades over the previous OHV 3.8L V6 Stangs; however, Ford still left plenty of room for improvement. Modding your V6 Stang for performance might be laughed at by many Mustang enthusiasts; however, owning and driving a V8-powered Pony car might not be in the cards for every S197 Mustang owner. That is why so many aftermarket companies like LMR have stepped up to provide V6 owners with plenty of performance modifications to help eliminate the performance gaps between the GT models.
|Horsepower||210 HP @ 5300 RPMs|
|Torque||240 ft-lbs @ 3500 RPMs|
|Fuel Economy||17/26 MPG|
|Displacement||245 cubic in.|
|Engine||SOHC with 12 Valves (2 per cylinder)|
|Transmission||T-5 Tremec 5 speed Manual Transmission or 5R55 5 speed Automatic|
|Exhaust||Single Exhaust Outlet|
There are plenty of YouTube videos and forum posts of very quick 4.0L V6 Mustangs. We have even seen plenty in action at the drag strips and open road course. When starting a performance-based build with V6 Pony Car it is best to start with a plan. You need to decide if you are looking to create a performance Mustang that will be mainly used for street driving, drag use, or open track racing. Having driven a few of these cars and experiencing the “short-comings” in person this is our recommendation for starting a 4.0L Stang project:
The foundation to any performance build is to help your engine breathe easier. The first step is to add cold air intake. A handheld tuner from SCT and throttle body will help you maximize your air/fuel performance.
An under-drive pulley kit and a performance coil pack will help you get the most performance out of your V6 engine. It is also a good time to upgrade and do some maintenance. Replace spark plugs, plug wires, and fuel filter.
Installing a higher ratio set of rear end gears such as 3.73 or 4.10 will be one of the most drastic improvements to your acceleration. Due to the lack of 7.5” rear end traction-lok and the high cost of the Auburn limited-slip, many V6 owners opt-in for the 8.8” rear end swap. This swap brings many performance and strength benefits. You will need the SCT tuner to change the gear ratio in your S197 Mustang.
If you have followed my upgrade plan, you now have increased rear wheel hop due to increased power. Adding a good set of rear lower control arms will help you plant your newly found power to the ground. It is also a good time to get rid of body roll with a set of lowering springs and replace worn out suspension components.
Some like to start with the exhaust, but it is proven to do little as far as performance. It is more about improved exterior looks and sound. I would save this for the end. You will need a GT or GT500 rear bumper or valance (for 2010 models) to get dual exhaust openings on the rear bumper.
Wheels are completely up to you. If you are going all out for drag racing check out some of our SVE Drag wheels. If you are looking for something that is more for street/strip use I would look at a set of wheels that are wider and have a larger diameter such as our SVE Drift Wheels. This one is all about your personal taste.
In no way do you have to follow this step-by-step. If you would prefer to do these upgrades in a way that better fits your personal goals – go for it!