By Ben Mozart
Photographs by Moore Good Ink

Of modern-day muscle cars, the experts tell us, the new Dodge Challenger adheres to it 60’s Muscle Car roots by delivering blistering straight line speed, immense road presence, and a ride comfortable enough to cruise the boulevards all day and know nothing of discomfort.

The 2010 Dodge Challenger generates just under 450hp. But things change when the 5.7 liter (345cu in) engine is stroked to 394cu in and twin turbochargers are added.

Recently Tim Matherley of MV Performance in Winder, Georgia, did just this. When work was completed the Challenger made 640 rear wheel horsepower at 5,900rpm and generated 720ft-lbs torque. To cope with the 42 percent increase in power. An aftermarket clutch that would handle the abuse of the additional torque and horsepower and still be comfortable for street cruising was reaquired.

Tim selected Ram’s Force 10.5 dual-disc and aluminum flywheel assembly to replace the original 9.5in OEM dual-disc arrangement.

To understand and master the process, we invite you to follow Tim’s steps through this sequence of photographs and helpful captions and learn how to perform a clutch upgrade.

First the drive shaft, exhaust system, and starter motor were removed. The slave assembly and part of the two-piece shifter stick mechanism were disconnected. A transmission jack was secured to the 6-speed manual Tremec 6060 gearbox. Then the six fasteners from the cross member and eight from around the bell housing were disconnected, allowing the transmission’s removal.

To install a new upgraded clutch-flywheel assembly you must first dismantle it. Manufacturer Ram Clutches applies black alignment marks to the cover assembly and the flywheel. These should be observed during installation. Proper alignment maintains the correct position of the pressure plate straps in relation to the floater plate straps, thus ensuring proper clutch release.
The purpose of the pedal adjuster—the small hydraulic device pictured to the right of the clutch assembly with the adjuster nut on top—allows the height of the pedal to be conveniently lowered if preferred.