Midwest Chassis 1982 - 2002 3RD/4TH Gen F-Body manual brake conversion kit. This kit includes Master Cylinder, Firewall Adapter Block, Pushrod/Heim Joint, Master Cylinder Component Mounting Plate, Biondo Line Lock, Universal Adjustable Proportioning Valve, Mounting Hardware, And Needed Fittings/Lines. It Bolts Into Existing Firewall Holes And Eliminates The Heavy Power Brake Boosters. Comes With Detailed Instructions.
Common issues with choosing bore sizes is that a larger master cylinder will create more pressure. A larger bore master cylinder does create a larger displacement of fluid it takes more force to create the same pressure as a smaller bore master cylinder. A larger bore master cylinder will take up some system slack with less pedal stroke it will take more force to create the same system pressure.
General rule of thumb is four 4-piston calipers you use a larger bore and two 4-piston calipers and two 2-piston calipers you use a small bore, This is just a suggestion as it is hard to determine how the brake pedal will feel with multiple different combinations.
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