Page 594 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog
P. 594

2020 DRAG RACING






                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  Ring Gear  Weight  Part No.  Description  Balance  Ring Gear  Weight
                Billet Steel Flywheels                            Billet Aluminum Flywheels
                 RAM1501    Chevrolet V8   Internal  168  33 Lbs.   RAM2501    Chevrolet V8  Internal  168   18 Lbs.
                 RAM1510    Chevrolet V8   Internal  153  15.5 Lbs.  RAM2550   Chevrolet LS1,   Internal  168  18 Lbs.
                 RAM1511    Chevrolet V8   Internal  153  26 Lbs.             1998-02 F-Body
                 RAM1550     GM LS1        Internal  168  26 Lbs.   RAM2529    Early SB Ford  Internal  157  14 Lbs.
                 RAM1521    Chevrolet 454  External  168  33 Lbs.  RAM1501LW   Chevrolet V8  Internal  168   25 Lbs.
                 RAM1523   Chevrolet 400 V8  External  168  33 Lbs.  RAM1505LW  Early SB Ford  External (28 oz.)  164  25 Lbs.
                 RAM1503    Chrysler 6-Bolt  Internal  130  28 Lbs.  RAM1507LW  Early SB Ford  Internal  164  25 Lbs.
                 RAM1583    Chrysler 8-Bolt  Internal  130  28 Lbs.  RAM1521LW  Chevrolet 454  External  168  25 Lbs.
                 RAM1593    Chrysler 8-Bolt  Internal  143  30 Lbs.  RAM1523LW  Chevrolet 400  External  168  25 Lbs.
                 RAM1527    Early SB Ford  External (28 oz.)  157  24 Lbs.  RAM1530LW  SB Chevy, 86-Up  External  168  25 Lbs.
                 RAM1507    Early SB Ford  Internal  164  33 Lbs.  RAM1531LW  SB Chevy, '86-Up  Internal  168  25 Lbs.
                 RAM1505    Early SB Ford  External (28 oz.)  164  33 Lbs.  RAM1540LW  Ford 4.6L SOHC, 6-Bolt  Internal  164  20 Lbs.
                 RAM1519    Early BB Ford  Internal  184  35 Lbs.  RAM1545LW  Ford 4.6L DOHC, 8-Bolt  Internal  164  20 Lbs.
                 RAM1545  Ford 4.6/5.0L 8-Bolt, 1996-07  Internal  164  26 Lbs.


                Deluxe Clutch Cable Kit For 1979-04 Ford Mustang   Pedal Height Adjusters NEW!
               RAM565    NEW!                                     Innovative hydraulic adjuster assembly
               Kit allows quick, precise clutch pedal adjust-     eliminates the annoying problem as-
               ments on 1979-04 Mustangs, while eliminating       sociated with late model performance
               notoriously sticky shifts and hard-to-find reverse   cars where the clutch pedal engagement
               gear. Includes heavy-duty cable, billet aluminum   point is uncomfortably high. Kit installs
               quadrant, and convenient firewall-mounted           in-line between the clutch cylinder and
               adjuster.                                          release bearing, and diverts fluid to the adjuster cylinder, moving the pedal
                                                                  downward toward the floor, while adding "free play". Sold complete with
                                                                  necessary adapters and adjuster line.
                                                                   Part No.          Description
                                                                   RAM78305  2010-Up Camaro/2005-Up Corvette/2005-Up Mustang
                                                                   RAM78307  1997-04 Corvette/1998-02 Camaro/Firebird

                TECH



                Pressure Plate Tech Tips

               Centrifugal Weights In Diaphragm Street/Strip Applications
                   Some aftermarket diaphragm pressure plates feature a centrifugal weighting system. Centrifugal assist is useful in drag racing and other high RPM applications to apply
               additional clamp load to the clutch disc. The drawback to centrifugal assist in highway performance applications is that the centrifugal assist is low until the engine reaches
               high RPM. The load on the clutch (the effort required to turn the driveshaft) is very high at low RPM and decreases at higher RPM. In most highway applications centrifugal
               assist is not effective in increasing holding power or performance because it fails to solve the high torque load at low RPM problem.

               Centrifugal Or Counterweight Loading
                   Centrifugal pressure is additional clamping pressure on the clutch disc that occurs as a function of engine RPM.  As engine RPM increases, centrifugal pressure forces the
               clutch fingers of the Long Style pressure plate outward.  As this occurs, the clutch fingers pivot against the cover and apply additional clamp loading to the clutch disc.

               Adjusting Static Pressure On Ram Long Style Clutches
                   Increasing the static pressure of a RAM Long Style pressure plate is achieved by turning the allen adjuster screw COUNTERCLOCKWISE to increase the static load.  When the
               screw is turned, it pushes against the cover and the adjuster base compresses the spring, increasing the spring rate.  Most pressure plates have a maximum of 7 turns adjust-
               ment.  Turning the adjuster screw further will cause it to come out of the adjuster base.  When this occurs, the entire plate must be disassembled for repair.  Some racers mark
               the turns they have in the clutch on the side of the bellhousing in order to keep track of where they are set.
                                                                                                                                                                     Courtesy of Ram Clutches



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