Wilwood / McLeod Racing

McLEOD HYDRAULIC CLUTCH CONVERSION - MoPAR A833 4-SPEED 23-SPLINE

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  • Regular price $469.95




1400 Series Hydraulic Clutch Conversion
Pedal Effort 20% Less than Stock Mechanical or Cable Linkage
Custom Installation Required

The "Push Style" Clutch Master Cylinder can be mounted on the firewall or frame rail depending on requirements.
6:1 Pedal Ratio Recommended
 
Kit includes: Clutch Master Cylinder & Slave Cylinder with (2) Steel Braided Lines; One Supply Line & One Bleeder Line (11" Length).

Complete kit except steel braided line which runs from master to slave cylinder. 

Check your "A" Dimension in the chart below.  Distance from Bellhousing to Pressure Plate should measure more than 3".

Application: CHRYSLER 1961-1978 V8 ; A833 4 SPEED 1" x 23 SPLINE INPUT

Formula for Pedal Ratio:

Pedal ratio is the ratio of leverage your clutch pedal applies to the master cylinder. To determine the pedal ratio you need to measure the height of the pedal to the pivot point then divided the measurement of the pivot point to the lower arm that controls your rod to the master cylinder.

A = height of pedal
B = center to center measurement of the lower arm
C = pedal ratio
A divided by B equals C
Or example 9" divided by 1.5" equal 6 to 1 ratio.



If you apply 100 pounds of pressure to the clutch pedal, 100 pounds X (6 to 1) = 600 pounds of pressure. So, if the clutch pedal has been modified from its' original design the pedal ratio is effected drastically. You can now see the pedal ratio is a "multiplier" of the pressure you apply with your foot, because this is the leverage that is applied to the master cylinder.

Now, take this same formula and substitute 2" instead of 1.5" you end up with a 4.5 to 1 ratio. Multiply 4.5 times the 100 pounds of applied pressure and you get 450 pounds instead of 600 pound. That half inch cost you 25 percent of your clutching power. The same thing applies when you shorten the upper measurement.