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RAM
Coupler
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Simply the smallest and lightest oval track
clutch system.
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The RAM Coupler is a compact, lightweight clutch system
featuring splined lock-up engagement. The cone clutch provides the initial
engagement to get the vehicle moving when the clutch pedal is depressed. Positive
lock-up is achieved when the pedal is released and the splined cone engages the
splined top plate. The RAM Coupler is just five pounds and 4 ¾ inches in
diameter - about the size of the crank flange itself! RAM recommends that the
coupler be used in vehicles under 2600 pounds, or with adequate low gearing to
avoid overloading the cone clutch.
A few things to consider:
Car weight and gearing
The heavier the vehicle, the more pronounced wear will be on the friction
cone. We recommend using the Coupler in vehicles 2600 pounds and under, or with
adequate low gearing to avoid overloading the cone clutch. .
Start out in low gear
If you only use third and fourth gear and your car is heavy, accelerated
wear will occur to the friction lining.
Restarts
Because the direct drive connection is not synchronized, engine and input
speeds must match before re-engagement.
| Description |
Spline |
Part
no. |
|
|
|
| Chevrolet
(early) |
1
1/8-10 |
28510 |
| Chevrolet
(early) |
1
5/32-26 |
28540 |
| Chevrolet
(late) |
1
1/8-10 |
28590 |
| Chevrolet
(late) |
1
5/32-26 |
28595 |
| Chevrolet
(late) |
1
3/8-10 |
28525 |
| Ford
SB |
1
3/8-10 |
28550 |
| Ford
BB |
1
3/8-10 |
28570 |
| Ford
2000cc |
1
1/16-10 |
28555 |
| Ford
2000cc |
1-23 |
28556 |
| Ford
2300cc |
1
1/16-10 |
28560 |
| Ford
2300cc |
1-23 |
28561 |
| Chrysler
6 bolt |
1-23 |
28585 |
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