Diaphragm type twin-disc clutch assemblies are vested with either “stands” or “straps” that secure the floater plate to the flywheel in relation to the sprung top clutch disc and the solid-hub bottom disc.
The issue with the stand arrangement is noise. The floater has a millimeter or two to move about on its (six) stands as the car is at idle with the clutch pedal depressed or when it is released to move the vehicle. Though not a concern with a racing application, it becomes an itch that can’t be scratched in a street-driven LS1, 2, 3, 6 or 7 or a Ford Modular 4.6L or 5.4L.
The RAM Force 10.5 incorporates an upper or “curved” strap that is the load-bearing strap for the pressure ring. The lower straight strap is the load-bearing strap for the floater (see accompanying close-up image). Both upper and lower straps are made of spring steel. This companion device totally eliminates the noise associated with stands.
Force 10.5 units use Ram’s 300-series steel-backed friction discs that feature an eight-spring hub assembly with urethane encapsulated springs for added durability as well as a marcel spring (a thin, wavy device) that helps eliminate the “go-or-no-go” tendency that accompanies most dual-disc clutches. A billet aluminum flywheel rounds out a package that weighs an average of 45 pounds.
All assemblies are 10.5-inch in diameter and are built to factory height dimensions. Original equipment hydraulic clutch systems are static and have no manual adjustment so the clutch and flywheel package must be the same height as the stock equipment. Installed heights are identical to OEM dimensions–no modifications necessary.
All 300-series discs are made from organic material for smooth engagement and are more than sufficient to deal with 900 horsepower. The springs in the disc are urethane-coated and have four times the compression rate as compared to uncoated springs. Clamping force is 2,400 pounds. Both sides of the steel floater plate are surface-ground to the same tolerance. (NOTE: The RAM 900-series discs are made from sintered metal and can hold up to 1,400 horsepower.)
A key feature of RAM aluminum flywheels is the steel insert that has enough mass to draw heat away from the clutch without distortion. RAM uses a 0.250-inch thick inset that is riveted in before the flywheel is surface ground to assure a parallel friction surface with no run-out, and enough material to adequately siphon off the heat while maintaining flatness over time. All RAM billet flywheels are SFI certified.
Identification for these quiet, twin-disc packages are as follows: All LS applications are 1 1/8-26 (PN 80-2100). There are four call-outs for the Ford Modular: 4.6 8-bolt 1 1/16-10 (PN 80-2200), 4.6 8-bolt 1 1/8-26 (PN 80-2220), 4.6 6-bolt 1 1/16-10 (PN 80-2260), and 4.6 6-bolt 1 1/8-26 (PN 80-2265). Price point is approximately $1,400. Units are in stock and ready to ship.
For more information, visit www.ramclutches.com.
The more the Project White Wagon becomes a topic of conversation the more skeletons fall out of the closet. It appears to us that there was a lot more tothis lady than met the eye.
Edelbrock is proud to announce the release of their new E-Force Supercharger kits for the C6 Corvette. The all new design pushes the stock LS3 engine up to an amazing 554 flywheel HP and 515 ft/lbs of torque (with stock fuel pump) or 599 flywheel HP and 547 ft/lbs of torque (with included high volume fuel pump). This supercharger incorporates the Eaton Twin Vortices Series (TVS) Gen VI rotor assembly, the same internals used on the new ZR-1 Corvette, as well as an air to water twin intercooler system and dual core heat exchanger. Torque has been optimized through the use of 12" long runners, while low speed fuel economy is retained through the use of an internal bypass valve to reduce parasitic loss. All of this technology fits under the stock hood without modification to the hood, hood liner or cowl.
Simply bolt-on a JEGS 3" Cat-Back Dual kit designed specifically for the 2008-10 Dodge Challenger SRT8 Hemi. Adds an average of 41 HP & 46 lb ft from 3500-6000 RPM! Features fully aluminized 16-gauge mandrel bent tubing, H-pipe and four Bullet mufflers. Provides an aggressive sound while re-using the factory exhaust tips for a stealth look. Made in USA. 
Aeromotive Stackable Regulator solution creates its own integrated fuel log, when combined with one another, by utilizing a patent pending flow-through designed regulator body. Using a positive O-ring seal, simply bolt as many of these regulators together as needed. Each billet aluminum, CNC-machined regulator unit is equipped with O-ring and ORB-Ports.
FastMetalRacing.com presents racing's first ever Easy View sparkplug indexing socket. Built with the racer in mind, their goal is to help the utilize their time and get all they can get out of their motor's performance. 
Sonny's Racing Engines has released their new 5.3 GM-style Hemispherical cylinder heads and are available in either a complete race ready version or a race ready casting. These heads flow over 700 cfm at 1.200" on the intake and over 470 cfm at 1.200"
Weight and space are always a consideration for Drag racers and these new On-Board Battery Pack modules from TWP address both concerns directly. The unique Battery Packs provide a compact, light weight, reliable, on-board 18-Volt power source for 12 volt accessories in drag cars and bikes. High output Lithium-Ion battery and application specific rubber insulated mounting plate weigh just 3 lbs and measure 4.5” L x 3.5” W x 3.5” T. 
racing suit. JEGS/Impact SFI-15 suits offer you a safe, comfortable, and affordable option. JEGS/Impact SFI-15 are made from high quality Nomex and feature floating 360° sleeves, ribbed knit leg cuff, front patch pockets, built-in arm restraints and the JEGS logo on the left front corner and across the shoulders on the back. These suits feature a TPP rating of over 60 and the SFI 3.2A/-15 approved tag. Race safe, smart, and comfortable with a JEGS/Impact SFI-15 suit. Pants and jackets available in Medium, Large and X-Large.
Jiffy-tite, an innovator of quick-connect self-sealing fluid fittings, has introduced EPDM seals to their range of acclaimed fittings. EPDM, a type of synthetic rubber, is compatible with brake fluid— making these new quick-connect fittings ideal for all hydraulic clutch systems, and especially useful for stock car racers. EPDM is also compatible with nitromethane, and these new connectors, all rated for 200 PSI, are now available in a variety of configurations for nitromethane fuel systems.