Pressure Plates

RAM PRESSURE PLATES

DESIGN YOUR OWN SYSTEM

RAM performance pressure plates are engineered and built to meet the demands of high horsepower street and competition cars and trucks. These are not converted or modified factory stock pressure plates. Each unit features increased or adjustable static pressure, a ductile iron explosion resistant pressure ring, and is precision balanced to within ½ ounce/inch. Over 40 years of racing clutch development and manufacturing assure you that the clutch you select will meet your expectations.

LONG STYLE

The Long Style is the preferred pressure plate for competition. Each unit provides a combination of static and centrifugal pressure, and these characteristics enable the clutch to meet the car needs and track-conditions. Long style clutches provide additional pressure through centrifugal force of the levers against the pressure ring. Pressure plates are available in a variety of static pressures including adjustable static and counterweight to allow precise clutch tuning. All competition long units feature a heavy cover with spring guides.

DIAPHRAGM

Diaphragm pressure plates are for street performance cars and trucks. These will provide the substantially increased clamp pressure necessary for high torque muscle car or crate motor street machines operating in a lower RPM range. RAM diaphragm clutches are approved for heavy duty street and limited competition. For full race vehicles, please select RAM long Style clutches with heavy duty covers.

BORG & BECK

Borg & Beck clutches are best suited for heavy muscle cars and are exact duplicates of the original Mopar and AMC pressure plates. The 10.95 version uses a larger 11 inch pressure ring for more surface area and heat dissipation, and bolts up to a 10.5 inch clutch pattern for smaller bellhousings. For full vehicles, please select HD cover RAM Long Style clutches.

DIAPHRAGM

SIZE

MAKE

STATIC PSI

NOTES

PART NO.

BOLT PATTERN

WEIGHT

BOLT SET

STUD SET

10.5

GM, Chry

2800

Ductile iron plate

401

11.625

17

490

492

10.5

GM, Chry

2800

Aluminum plate/steel insert

801

11.625

13.5

490

492

10.5

GM

2400

LT1 pull type

40082

11.625

18

use OEM

-

11

GM, Chry

2800

Exc. LS factory

402

12.625

18

490

492

11

GM

2800

LS metric (no dowel pins)

402L

12.625

18

528

-

10

Ford

2400

Dia. Replacement for lever 10.5"

40030

11.375

16

493

-

10.5

Ford

2200

Mustang 'Cobra' style

432

11.375

17

493

-

10.5

Ford

2500

Mustang HD

434

11.375

17

493

-

11

Ford

2400

Dia repl for lever 11" exc. 1 3/8-10

40465

12.375

18

490/491

-

12

Ford

2400

Dia repl for lever 12" exc. 1 3/8-10

40800

12.875

20

490/491

-

BORG & BECK

SIZE

MAKE

STATIC PSI

NOTES

PART NO.

BOLT PATTERN

WEIGHT

BOLT SET

STUD SET

10.5

GM, Chry

2800

Ductile iron plate

403

11.625

17

490

492

10.5

GM, Chry

3200

Ductile iron plate

423

11.625

17

490

492

10.95

GM, Chry

2800

10.5 bolt pattern, 10.95 plate

418

11.625

18

490

492

10.95

GM, Chry

3200

10.5 bolt pattern, 10.95 plate

428

11.625

18

490

492

11

GM, Chry

2800

Ductile iron plate

404

12.625

18

490

492

11

GM, Chry

3200

Ductile iron plate

414

12.625

18

490

492

LONG STYLE NON-ADJUSTABLE

SIZE

MAKE

STATIC PSI

NOTES

PART NO.

BOLT PATTERN

WEIGHT

BOLT SET

STUD SET

10.5

Ford

1800

5/16 mounting, std cover

415

11.375

17

491

-

10.5

Ford

2600

5/16 mounting, std cover

405

11.375

17

491

-

11

Ford

2600

5/16 mounting, std cover

406

12.375

18

491

-

11

Ford

1800

3/8 mounting, HD cover

440

12.375

19

490

492

11

Ford

2000

3/8 mounting, HD cover

439

12.375

19

490

492

11

Ford

2400

3/8 mounting, HD cover

436

12.375

19

490

492

11

Ford

2400

3/8 mounting, HD cover, CW lever

436CW

12.375

19

490

492

11

Ford

2800

3/8 mounting, HD cover

437

12.375

19

490

492

11

Ford

2800

3/18 mounting, HD cover, CW lever

437CW

12.375

19

490

492

LONG STYLE ADJUSTABLE STATIC

SIZE

MAKE

STATIC PSI

NOTES

PART NO.

BOLT PATTERN

WEIGHT

BOLT SET

STUD SET

11

Ford

1200-1800

3/8 mounting, HD cover

435

12.375

19

490

492

11

Ford

1200-1800

3/8 mounting, HD cover, CW lever

435CW

12.375

19

490

492

11

Ford

1500-2100

3/8 mounting, HD cover

448

12.375

19

490

492

11

Ford

1500-2100

3/8 mounting, HD cover, CW lever

448CW

12.375

19

490

492

11

Ford

1800-2400

3/8 mounting, HD cover

438

12.375

19

490

492

11

Ford

1800-2400

3/8 mounting, HD cover, CW lever

438CW

12.375

19

490

492

11

Ford

2200-2800

3/8 mounting, HD cover

458

12.375

19

490

492

11

Ford

2200-2800

3/8 mounting, HD cover, CW lever

458CW

12.375

19

490

492

SINGLE IRON LONG STYLE ADJUSTABLE STATIC

SIZE

MAKE

STATIC PSI

NOTES

PART NO.

BOLT PATTERN

WEIGHT

BOLT SET

STUD SET

11

Ford

360-990

Steel ring, HD cover, CW lever

470CW

12.375

19

490

492

11

Ford

360-990

Alum ring, HD cover, CW lever

670CW

12.375

15

490

492

11

Ford

360-990

Steel ring, HD cover

470

12.375

19

490

492

11

Ford

800-1640

Steel ring, HD cover, CW lever

471CW

12.375

19

490

492

11

Ford

800-1640

Alum ring, HD cover, CW lever

671CW

12.375

15

490

492

11

Ford

800-1640

Steel ring, HD cover

471

12.375

19

490

492

11

Ford

1200-2040

Steel ring, HD cover, CW lever

473CW

12.375

19

490

492

11

Ford

1200-2040

Alum ring, HD cover, CW lever

673CW

12.375

15

490

492

11

Ford

1200-2040

Steel ring, HD cover

473

12.375

19

490

492

11

Ford

1500-2340

Steel ring, HD cover, CW lever

474CW

12.375

19

490

492

11

Ford

1500-2340

Alum ring, HD cover, CW lever

674CW

12.375

15

490

492

11

Ford

1500-2340

Steel ring, HD cover

474

12.375

19

490

492