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Product Summary

Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac

  • Stock style single piston calipers
  • Replacement for 1969-77 GM Midsize cars
  • For IMCA Hobby Stock/Street Stock classes
  • Wilwood D52 PolyMatrix BP-10 brake pads - metallic composite, medium-high temp range
  • Can be used with brake hoses from pre-78 GM intermediate cars

Comes as a Kit

Key Specs

BrandSpeedway Motors

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Details

These complete single piston brake caliper and brake pad kits are perfect for IMCA Hobby Stock or Street Stock 1969-77 GM Midsize race cars.

  • Stock style single piston calipers
  • Replacement for 1969-77 GM Midsize cars
  • For IMCA Hobby Stock/Street Stock classes
  • Front brake set with Left and Right calipers/brake pads
  • Wilwood D52 PolyMatrix BP-10 brake pads - metallic composite, medium-high temp range
  • No core charge required
  • 7/16"-20 inlet
  • 7-1/16" center to center with 2-3/4" width between mount tabs
  • Fits 1" thick rotors
  • Can be used with brake hoses from pre-78 GM intermediate cars
  • Allen head zinc plated steel slider bolts - 7/16"-20 Thread

Kit Includes:

  • (1) IMCA Approved 69-77 GM Midsize Standard Brake Caliper - Left
  • (1) IMCA Approved 69-77 GM Midsize Standard Brake Caliper - Right
  • (1) Set of 4 Wilwood 150-8939K D52 PolyMatrix BP-10 Brake Pads
  • (4) GM Brake Caliper Slider Bolts

Installation Note:

Only use full metallic pads on coated rotors.

When utilizing slider bolts, the original slide pin bolt sleeve will not be used.  It must be removed from the caliper as the head of this slide pin bolt has this sleeve function built into the bolt.    The slide pin bolts included will replace both the original slide pin bolt sleeve and the original equipment type slide pin bolt.

Learn how to properly Bed-In your brake pads by reading our tech article.  Bedding-In Brake Pad Procedure.

Application Note:

These calipers are a standard full size GM caliper used for years on many vehicles (1969-72 Chevelle, 73-77 A-Body, 1969-1981 Camaro, 1977 Caprice, S-10 pickups, etc). They will fit any bracket / spindle designed for the large GM calipers (7” mount width).

Depending on the spindle and rotor size they will not fit in most 14” wheels (nor in 15” drum brake wheels).

 

Wilwood 150-8939K D52 PolyMatrix BP-10 Brake Pads

  • Metallic composite compound
  • Medium-high temp range similar to full metallic
  • Medium-high torque
  • Medium friction compound with low noise and low dust of a street performance compound and the increased friction characteristics of a semi-metalic race compound.
  • High performance street / strip, drag race, and track day categories using vented rotors.
  • Ideal for disc brake conversions on street rods and muscle cars.
  • Smooth engagement with consistent response from a flat torque curve throughout its entire effective temperature range.

Charts

Specifications

KEY SPECS
BrandSpeedway Motors
GENERAL
Caliper PistonsOne
Piston Diameter2.75"
Rotor Thickness1.00"
Bore Size2.75"
Centerline of Holes7.06"
Thread Pitch7/16"-20
Caliper FinishNatural
Brake Pad CompoundBP-10
PositionLeft and Right
Brake Pads IncludedYes
NotesBrake Pad temp range: 800° to 900°F
Sold in QuantityKit