Hydroboost and brake line pressure
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Factory GMC pump is around 1400 psi
Maximumbrake line psi
Pedal pressure lbs at maximum
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Steering pump pressure
14001 1/8" master2691.549296.545" input rod89.12568306
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1 1/4" master2192.95082.600" input rod107.8688525
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Only adjustable value is pump pressure
1 5/16" master1981.777778.688" input rod141.9125683
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Lbs force to master
2675.434mm master1897.446809.781" input rod183.2240437
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37mm master1573.764706
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40 mm master1386.217617
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Input rod force in lbs at maximum
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.545"326.2
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calculations based in hydroboost with 1.56" diameter output piston,
.600"394.8
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1975 GMC
pedal ratio 3.66 to 1
.688"519.4
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.781"670.6
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