If you are in the middle of a Fox Body Mustang, a classic Camaro, or a C10 truck build (among others), you may eventually hit the weak link realization. You’ve built the engine, you’ve upgraded the transmission, but that stock 10-bolt or 7.5-inch rear end is a ticking time bomb.
For decades, the answer was always the same: Go find a Ford 9-inch.
Let’s be honest about what that actually entails: Scouring the local scrap yards or Marketplace for a questionable 40-year-old housing. Cleaning it, checking it for cracks, paying a shop to narrow it, sourcing the right backing plates, buying new axles, and hoping you set the backlash correctly on the center section. It’s a project within a project.
There is a better way – the Moser Engineering 9″ HD Stamped MUSCLE PAK.
It’s the ‘crate engine’ philosophy applied to your drivetrain. Here is why this package has become the go-to solution for enthusiasts who want to spend more time driving and less time wrestling with rusty suspension mounts or blown rear ends at the track.
True Bolt-In Solution
The biggest plus of the MUSCLE PAK is in the name: it’s a complete package. We engineer these units to match the OEM mounting points of your specific vehicle chassis.
If you are building a ’69 Camaro, the leaf spring perches are in the exact right spot. Building a G-Body? The control arm mounts are ready to go. No cutting, welding, or fabrication required. You drop your old axle, and this one lifts right into place.
100% New Metal – No Refurbished Parts
A lot of custom rear ends on the market start with a reclaimed factory housing. While a cleaned-up Ford housing is tough, it still has decades of metal fatigue.
Our 9″ MUSCLE PAK uses a brand new nodular iron case set in a brand new heavy-duty stamped steel housing. Every bracket, tube, and bearing is new. You aren’t getting a sandblasted unit from 1975; you are getting a freshly stamped, steel case built to handle modern horsepower.
Built To Your Specs, Not One Size Fits All
Our secret weapon is our ability to expertly spec out the axle exactly how you want it. This isn’t an off-the-shelf part that you just have to live with.
When you order a MUSCLE PAK, you’re choosing:
- The Gear Ratio: From highway-friendly 3.0’s to really quick 5.14’s. And if you’re drag racing with a lot of power, we’ve got heavy-duty gearing from 3.5’s to 4.86’s.
- The Differential: Want a specific spool for the track? We can pre-install it.
- The Axles: You get Moser’s legendary custom alloy axles (usually 31, 33, or 35 spline).
- The Brakes: you can choose from drum brakes to match an OE application all the way to multi piston disc brakes for street and drag applications.
- The Housing: The type of housing featuring all new Moser manufactured housings. 9 inch, fabricated 9″, 12 Bolt, 8.8, Dana 60 and even 8 ¾ Mopar.
The Moser Speed Reputation
If you spend any time in the project car world, you’ll notice a recurring theme regarding the Moser MUSCLE PAK: Speed.
The custom axle industry is notorious for long lead times. It is not uncommon to wait 8 to 12 weeks for a custom rear end from some builders. We’ve worked hard to build a reputation for having the fastest turnaround time in the industry – we ship custom assemblies in a fraction of the time of our competitors. When you are itching to get your car back on the road or track, that speed matters.
Find MUSCLE PAK at MoserEngineering.com
The Moser 9″ MUSCLE PAK removes the weakest link in your powertrain and replaces it with a component that is arguably stronger than the frame it’s bolted to.
If you are tired of worrying about snapping an axle at the launch or destroying your ring gear on a hard shift, it’s time to upgrade. The Moser 9″ MUSCLE PAK offers:
- Countless Custom Upgrades and Options
- 100% New Parts, No Remanufactured Components
- Easy, Direct-Fit Install Using OEM Mounting Points
- True Bolt-In, Completely Assembled Package
- The Fastest Turnaround Time in the Industry!
Ready to bulletproof your drivetrain? We use and race every product we make and have since the 80’s. Check out our full line at MoserEngineering.com and configure your MUSCLE PAK today!