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Product Summary

Front Position, 5 on 4.75" Bolt Pattern, Natural

  • Now you can easily convert your manual drum braking system and add some power on your 1964-1972 GM A/F/X body with little to no modificatoins
  • Front disc brakes provide a significant improvement in braking performance versus the drum brakes your car came with
  • This complete front disc brake conversion kit fits 1964-72 GM A-Body, 1967-69 GM F-Body and 1968-74 X-Body using our new replacement stock height disc brake spindles # 910-34900
  • Kit includes 11" diameter vented brake rotor with 5 on 4-3/4" wheel bolt pattern, '69-'77 GM style calipers (7/16"-20 inlets), caliper brackets, brake pads, backing plates, rubber brake lines, and all necessary bearings, seals and hardware for an easy, complete installation onto factory disc brake spindles
  • We've also included the correct brake booster, master cylinder and proportioning valve for a complete solution for your car!

Comes as a Kit

Key Specs

MFG. Part #91604100
BrandSpeedway Motors
PositionFront
Rotor Diameter11 Inch
Rotor TypeVented

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Details

Now you can easily convert your manual drum braking system and add some power on your 1964-1972 GM A/F/X body with little to no modificatoins. Front disc brakes provide a significant improvement in braking performance versus the drum brakes your car came with. This front disc brake conversion kit fits 1964-72 GM A-Body, 1967-69 GM F-Body and 1968-74 X-Body using our new replacement stock height disc brake spindles # 910-34900.

Kit includes 11" diameter vented brake rotor with 5 on 4-3/4" wheel bolt pattern, '69-'77 GM style calipers (7/16"-20 inlets), caliper brackets, brake pads, backing plates, rubber brake lines, and all necessary bearings, seals and hardware for an easy, complete installation onto factory disc brake spindles. We've also included the correct brake booster, master cylinder and proportioning valve for a complete solution for your car!

Brake Booster and Master Cylinder Details:

  • Booster Brackets
  • 1" Bore Cast Iron Master Cylinder
  • 9/16"-18 & 1/2"-20 Ports
  • Left Side Mount Disc Drum Proportioning Valve Kit
  • 9" Delco Style Power Brake Booster, Zinc
  • Clevis
  • Pedal Rod Ext.

Charts

Specifications

KEY SPECS
MFG. Part #91604100
BrandSpeedway Motors
PositionFront
Rotor Diameter11 Inch
Rotor TypeVented
GENERAL
Bolt Pattern5 on 4.75"
Caliper PistonsOne
Caliper FinishNatural
ColorNatural
Parking Brake ProvisionNo
Bore Size2.75"
Minimum Recommended Wheel Diameter15 Inch
Rotor Thickness1.05"
Rotor ShapeRound
Stud Diameter0.44"
Stud Length0.8"
Thread Pitch7/16"-20
Hardware IncludedYes
Sold in QuantityKit
Spindle TypeFactory Disc Spindle
Rotor StylePlain Face
Rotor FinishNatural
Rotor Material TypeCast Iron
Front Rotor IncludedYes
Front Rotor Diameter11 Inch
Front Caliper IncludedYes
Front Caliper Piston Quantity1
Front Caliper MaterialSteel
Front Caliper FinishNatural
Rear Caliper IncludedNo
Front Spindles IncludedNo
Master Cylinder IncludedYes
Brake Booster IncludedYes
Brake Lines IncludedNo
Parking Brake Cables IncludedNo
Brake Booster Diameter9 Inch
Brake Booster FinishZinc
Brake Booster MaterialSteel
Brake Booster TypeVacuum Diaphragm Single
Brake Hose MaterialRubber
Brake Hoses IncludedYes
Master Cylinder Bail TypeDouble Bail Wire Zinc Lid
Master Cylinder Bore Size1 Inch
Master Cylinder FinishNatural
Master Cylinder MaterialCast Iron
Master Cylinder Port Sizes9/16"-18 & 1/2"-20
Mounting Bracket IncludedYes
Brake Pedal Rod IncludedNo
Proportioning Valve LocationLeft Mount
Proportioning Valve TypeFixed
Rear Rotor IncludedNo