AFT Multi Disc, Multi (18) Arm, Multi Stage, Titanium, 9 Stand,
Top Fuel , Slider, Centrifugal Clutch
( shown 10.5 and 11 inch)  aprox $10,000.00/each

Aluminum RAM 8 bolt Hemi (early flange)  2 Disc Sintered Iron,
Pedal Style, Chevy Starter Ring Gear, 6 release Arms,
6 Stand (Titanium), , Pro Mod Clutch  aprox $4,000.00/each
 

Flywheel and flexplate are located  (centered) on raised area in center of crankshaft

Note:
no bronze bushing for 4speed standard transmission input shaft , but crankshaft is machined to install a bushing

Flywheel and flexplate are located (centered) on raised area in center of crankshaft

Note:
no bronze bushing for 4speed standard transmission input shaft , but crankshaft is machined to install a bushing

Flywheel is located (centered) on outside of crankshaft flange center is removed like early Chryslers This is preferred because it allows for larger input shaft bearings needed on
multidisc clutches

Note:
shown with adapter ring installed to allow use of flexplate or flywheel that doesn't locate on outside of crankshaft flange. in other word converted to 8 bolt later style shown above
 

In auto racing there is always exceptions
this is a diaphragm clutch with centrifugal arms added ?
 

springs force pressure plate against discs, needs a pedal to launch race car, but force primarly centrifugal
 

spring hold pressure plate away from discs, may not need a pedal to launch race car, but force only centrifugal
 

Note :
- arms installed are 6 base arms same length (height from release bearing)
this makes it a single stage possibly an A fuel or Nostalgia

- arms on left can be added in empty slots on cover, or even replace base arms
this would be added to clamping force of pressure plat as release bearing is moved back by hydraulic/pneumatic clutch management system (keep in mind there will be an
imbalance if arms aren't kept equal weight - which is impossible so bye bye rear bearing)

There is several inside diameters , outside diameters, depths, and an infinite list of custom lengths of the sliders to allow for the multitude of clutch sizes and input shafts sizes to the reverser or transmissions

- Titanium with all titanium components including bolts

Steel - 8 5/8 with FC pedal - covers are not aluminum

Stock style Note: shown is with removable
bottom and is no longer approved

Note: (right) cross shaft has also been moved further away from center  - to clear moving clutch parts and provide better geometry for fork and release bearing wide clutch fork to allow bearing to sit between arms - for additional clearance