900 Series Street/Strip Clutches
Competition Pressure Plates Ram pressure plates are built with explosion resistant pressure rings and are SFI approved to withstand the rigors of heavy duty street or strip use. Part No. Description Size
Clutches have the ultimate reliability for up to 500 horsepower. Sintered iron friction mate- rial provides a smooth engagement, but allows some “slip” off of the starting line for optimum launch. Clutches must be used with a Ram flywheel or accelerated disc wear will occur. Part No. Description Clutch Discs RAM910 Powergrip Street/Strip Clutch Sets A unique blend of friction materials increase clamp- ing power for crisp clutch engagement and release. Powergrip Clutches increase holding power by 80%.
Bolt Circle Static Pressure
RAM401 RAM402 RAM403 RAM423 RAM404 RAM414 RAM405* RAM436 RAM437
GM Diaphragm 10.5"
11.625" 12.625" 11.625" 11.625" 12.625" 12.625" 11.375" 12.375" 12.375"
3,000 Lbs. 3,000 Lbs. 2,800 Lbs. 3,200 Lbs. 2,800 Lbs. 3,200 Lbs. 2,600 Lbs. 2,400 Lbs. 2,800 Lbs.
GM Diaphragm Borg & Beck Borg & Beck Borg & Beck Borg & Beck
11"
10.5" 10.5"
11" 11" 11" 11"
11" x 1-5/32"-26, “TKO” Transmission
Long Style Long Style Long Style
10.5"
* Pressure plate with 5/16" mounting holes. All others are 3/8".
300 Series Street/Strip Clutch Discs Street/strip discs have smooth engagement, outstanding performance, and long life. Each clutch features steel backed facings and the patented Ram poly-coil hub design. Part No. Description RAM301M 10.5" x 1-1/8"-10 RAM305M 10.5" x 1-1/16"-10 RAM309M 10.5" x 1-5/32"-26 RAM302M 11" x 1-1/8"-10 RAM310M 11" x 1-5/32"-26 6000 Series Competition Clutch Discs 6000 Series discs offer quick, clean shifting and long life for competition vehicles. Expect clutch chatter when using these discs on the street. Part No. Description RAM6121 10.5" x 1-1/8"-10 RAM6129 10.5" x 1-5/32"-26 RAM6128 11" x 1-3/16"-18 RAM6130 11" x 1-5/32"-26 Billet Steel And Aluminum Flywheels Flywheels are CNC-machined from certified metals that exceed SFI specifications. Flywheel friction surfaces are ground parallel to the crank flange for minimal runout. Factory balanced for bolt-in use. Part No. Description Balance
Powergrip HD sets add up to 120% more clamping force with minimal effect on driveability. Each set includes clutch disc, pressure plate and throwout bearing. Part No. Description Powergrip Clutch Sets RAM98730 1982-92 Camaro/Firebird, 10.5" Clutch RAM98762 1966-72 Chevelle 350/396/402; 1966-70 Corvette 350/427, 11" Clutch
1967-81 Camaro 305/350/396/400; 1970-74 Chevelle 350/454; 1970-81 Corvette 350/454; 1973-79 Pontiac Firebird 400/455, 4-Speed 1966-78 Dodge Charger/Challenger 318/340; 1965-75 Plymouth Barracuda/Belvedere/Duster 273/318/340
RAM98764
RAM98766 RAM98794T
1986-95 Ford Mustang 5.0L (302), TKO Trans. RAM98931 1997-04 Corvette; 1998-02 Camaro/Firebird, 11" Clutch, 26-Spline Powergrip HD Clutch Set RAM98794HD* 1986-95 Ford Mustang 5.0L (302), Except TKO Trans. * Use with a billet steel flywheel for best results.
10.5" Single Sintered Iron Clutch Disc Systems
Suited to applications with up to 1,000 horse- power, single iron disc assemblies are a cost effective clutch system for bracket, Stock Elimi- nator and fastest street car classes. Systems
use 5135 (hard) compound sintered iron discs, which allow the clutch to “slip”, preventing the car from overpowering the tires. Pressure plates are based upon the 11" Long style, use a nodular iron pressure ring and feature significantly lower static pressure. Part No. Description RAM471 Pressure Plate, 800 lbs., Big Block Applications RAM1358 Clutch Disc, 1-3/16"-18 Spline RAM1361 Clutch Disc, 1-3/8"-10 Spline RAM1363 Clutch Disc, 1-1/8"-26 Spline Related Components RAM492 Pressure Plate Stud Set, Required RAM550 Pressure Plate Shim Set, Required Throwout Bearings Part No. Description RAM485 Early Ford, Clip Style, 1-1/16"-10 RAM486 Early Ford, Clip Style, 1-3/8"-10 RAM488 Early GM, Short RAM489 GM, For Use With Long Style Clutch RAM501 Late Ford, Short, For Use With Diaphragm Style Clutch
Ring Gear Weight
Billet Steel Flywheels RAM1501
Chevrolet V8 Chevrolet V8 Chevrolet V8
Internal Internal Internal Internal External External Internal Internal Internal
168 153 153 168 168 168 130 130 143 157 164 164 184 164 168 168 157 164
33 Lbs. 15.5 Lbs. 26 Lbs. 26 Lbs. 33 Lbs. 33 Lbs. 28 Lbs. 28 Lbs. 30 Lbs. 24 Lbs. 33 Lbs. 33 Lbs. 35 Lbs.
RAM1510 RAM1511 RAM1550 RAM1521 RAM1523 RAM1503 RAM1583 RAM1593 RAM1527 RAM1507 RAM1505 RAM1519
GM LS1
Chevrolet 454 Chevrolet 400 V8 Chrysler 6-Bolt Chrysler 8-Bolt Chrysler 8-Bolt Early SB Ford Early SB Ford Early SB Ford Early BB Ford
External (28 oz.)
Internal
External (28 oz.)
Internal Internal
RAM1545 Ford 4.6/5.0L 8-Bolt, 1996-07 Billet Aluminum Flywheels RAM2501 Chevrolet V8
26 Lbs.
Internal Internal Internal
18 Lbs. 18 Lbs. 14 Lbs. 18 Lbs.
Chevrolet LS1, 1998-02 F-Body Early SB Ford Early SB Ford
RAM2550 RAM2529 RAM2515
External (28 oz.)
556
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