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Product Summary

Buick, Chevy, Oldsmobile, Pontiac, Oval Track Cars

  • Stock style single piston Metric calipers
  • Replacement for 1978-88 GM Midsize cars
  • For IMCA Hobby Stock/Street Stock classes
  • Wilwood BP-10 brake pads - low abrasion on iron rotors, low-medium wear rate
  • Can be used with brake hoses from pre-78 GM intermediate cars

Comes as a Kit

Key Specs

MFG. Part #9108663
BrandSpeedway Motors
Caliper PistonsOne
Brake Pads IncludedYes
Caliper FinishNatural

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Speedway Motors 9108663 Details

These complete single piston brake caliper and brake pad kits are perfect for IMCA Hobby Stock or Street Stock 1978-88 GM Metric race cars.

  • Stock style single piston Metric calipers
  • Replacement for 1978-88 GM Midsize cars
  • For IMCA Hobby Stock/Street Stock classes
  • Front brake set with Left and Right calipers/brake pads
  • Wilwood BP-10 brake pads - low abrasion on iron rotors, low-medium wear rate
  • No core charge required
  • 7/16"-20 inlet
  • 5-1/2" mount spacing
  • 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 78-88 GM Metric Brake Caliper - Left
  • (1) IMCA Approved 78-88 GM Metric Brake Caliper - Right
  • (1) Set of 4 Wilwood 150-8636K 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.

 

Wilwood 150-8636K PolyMatrix BP-10 Brake Pads

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

Charts

Speedway Motors 9108663 Specifications

KEY SPECS
MFG. Part #9108663
BrandSpeedway Motors
Caliper PistonsOne
Brake Pads IncludedYes
Caliper FinishNatural
GENERAL
Piston Diameter2.375"
Caliper Material TypeSteel
Sold in QuantityKit
Bore Size2.38"
Centerline of Holes5.50"
Thread Pitch7/16"-20
Brake Pad CompoundBP-10
PositionLeft and Right
NotesBrake Pad temp range: 800° to 900°F