Brenspeed B326 3V Stroker Engine!
The Ultimate Engine For Those Who Take Their Mustang Seriously:


THE BRENSPEED B326 has taken our custom engines to a whole new level and trumps smaller 302 stroker engines in power, displacement, and strength! We have designed the B326 at 9:64:1 compression using OEM Ford Cylinder heads or 9.8.1 using a smaller 48cc FRPP Big Valve cylinder head to make the ultimate supercharged street or strip engine. You get the same race winning quality we have always included in our smaller stroker engines, but more cubic inches, improved block strength, and MORE RAW POWER. The Brenspeed B326 for the 2005 to 2010 Mustang is built right here in our state of the art facility, professionally packaged, and crated to ship directly to you! Just like every product we sell at Brenspeed,  if the job is to big for you to tackle,  make the trip to one of our facilities. Stay for free in our Brenspeed guest house, and let our professional team perform the installation for you.

This item is typically in stock.  The B326 Does Not qualify for Flat Rate Shipping via UPS.  Freight charges apply. 

-The B326 will run perfect in a Mustang that is Naturally Aspirated, Supercharged or Turbocharged

-You can use your stock OEM or aftermarket 3V Cylinder Heads AND use your OEM stock or aftermarket cams.

-The B326 can retain all your original accessories and exhaust you only need our B326 motor mounts to install. This of this as a direct replacement engine.

-The B326 will support up to 1000HP

* Ford Racing M-6031-BOSS50 Motor Mounts must be used
* Ford Racing M-6067-3V50 Head Changing Kit must be used


Brenspeed B326 Key Ingredients

Boss 5.0L Modular Block
The Boss 5.0L Block is cast in Ford’s Cleveland plant and shipped to Brenspeed for final prep. Ford designed this block with a proprietary iron mix to yield the strongest possible casting strength yet greatest consistency possible. The freshly cast block is prepped, machined, and quality checked to assure each and every block meets our specifications.

Brenspeed Spec/Prepped 3.75 Stroke Forged Steel Crankshaft
Brenspeed Race Prepped and Balanced crankshafts are machined to our race/street specs. Our 4340 Forged  Steel cranks are top of the line for street or race applications. Well capable of handling over 1000 HP the B326 crankshaft is balanced and prepped to Brenspeed standards. There are a lot of different style 8 bolt cranks on the market. Many people believe if the crank is an 8 bolt it is a high quality forged steel crank. This is not the case as you can find many types of steel cranks on the market.

ARP Main Cap Studs
ARP is yet another company that proudly makes their products in the USA. The ARP main studs used in the B326 are manufactured from 8740 chrome moly steel, heat treated to 200,000 psi tensile strength, and precision j-form threads rolled after the heat treating to create a fastener that has threads 1000% stronger than others. What does all that engineering talk mean? It means your B326 crankshaft is secured in place with the best fastener on the market!

Brenspeed spec 4.6L Stroker Connecting Rods & ARP Rod Bolts
B326 rods are manufactured from 4340 forgings. They are Heat treated, stress relieved, shot peened, and 100% magnafluxed. We have used thousands of our prepped rods over the years without failure and this is our choice of connecting rod in the B326 stroker!


Brenspeed Lightweight Pistons & Ring Set
Our Piston choice is designed for Tighter clearances, less noise, better ring seal, more power, and more durability than other brand pistons on the market.  Manufactured for Brenspeed by Manley the forgings were designed using advanced 3D modeling which allows Manley to check thicknesses and weights before machining enabling them to produce the strongest yet lightest piston possible. Once designed they are machined on a 5-axis CNC machine while computerized electronic inspection equipment confirms they are manufactured to the tightest tolerances in the industry.  Only Total Seal high quality rings are used in the B326.

Complete Clevite  Bearing Set
Our B326 feature the Clevite rod and main bearings. These bearings feature a sophisticated blend of materials that offer extraordinary protection and lubricity. The enhanced wear characteristic of bearings increase bearing life in race and high performance street engines. Our bearing selection is well suited for not only competition engines but street engines as well. These features provide a bearing that has great protection during start up, reduced friction and drag, ability to withstand extreme temperature and pressure, and extraordinary strength and durability. They are proven winners in NHRA, NMCA, NMRA, Nascar, and IHRA.

4.6L 3v mustang engine

Convenient 0% interest Financing Available!

We know how hard it can be to come up with a large amount of money to get that Mustang part you have been wanting. To help solve this problem we have found a great way to get your part now and pay later. Brenspeed can now offer financing options for your performance part and even installation!

The process is simple. Just call us and we can go over your options and how to get 3 months, 6 months, or even 12 months same as cash with 0% interest. Now you can get that intake and tuner or even supercharger now and pay for it later. Even if you do not choose to pay the financing off in say 3, 6, or 12 months GE Money will turn your 3, 6, or 12 month same as cash into a monthly payment with a set interest rate.

The entire approval process only takes 5 minutes once we receive your application. Once you are approved we provide you with your product or service immediately. Call us to receive an application and get all the details on this easy to use financing option.

Call us at 574.594.9559 and simply ask for a financing application. We can answer any further questions you may have at that time.