1955-57 Chevy 2 Inch Dropped Spindle/Disc Brake Kit with Booster

Upgrade your Tri-Five Chevy's handling and stopping power with drop spindles and brakes you can count on, all while staying on a budget.

Kit Includes:

• (1) Pair of 1955-57 Chevy 2" Drop Spindles
• (1) Pair of 1955-57 Metric Caliper Brackets
• (1) Bolt Kit for 1955-57 Drop Spindle to Metric Caliper
• (2) 1979-1981 GM Midsize 10 1/2 Inch Disc Brake Rotors
• (1) GM Metric LH Brake Caliper, 7/16-20 Inlet
• (1) GM Metric RH Brake Caliper, 7/16-20 Inlet
• (1) Set of Speedway Soft Street Brake Pads, GM Metric 1978-Up D154
• (2) Speedway Replacement Inner Seals
• (2) Inner Wheel Bearing Cones
• (2) Outer Wheel Bearing Cones
• (1) Spindle Nut Kit for Speedway GM Spindles
• (1) Front Disc Brake Hardware Kit
• (1) 55-57 Fullsize Chevy Brake Booster Conversion Kit, 1 In Bore, Zinc

Learn more about the products chosen and why we recommend them for your Tri-5 Chevy, here:Drop Spindle Install and Disc Brake Conversion on a 55 Chevy

1955-57 Chevy 2" Drop Spindles, Aftermarket Disc Brake Kit

• 1955-57 Chevy 2" dropped spindles for use with aftermarket disc brake conversion kits
• 2" drop built in
• Cannot be used with stock drums or brake conversion for stock type spindle
• Completes both sides
• Maintains factory steering and suspension geometry
• Track width is increased over stock O/E front end width by 3/4" overall or 3/8" per side

Ideal for use in conjunction with the following Wilwood brake kit for Heidts Tri-5 drop spindle application:

• 4-piston 12.19" rotor kit #140-12306

1955-57 Metric Caliper Brackets

• These metric caliper brackets have a zinc finish
• Steel design is engineered for quality as well as durability
• .38" material thickness
Foundry

Bolt Kit for 1955-57 Drop Spindle to Metric Caliper

• Use these bolt kits to mount your drop spindle conversion to metric calipers
• Designed for use with 1955-57 Chevy

1979-1981 GM Midsize 10 1/2 Inch Disc Brake Rotors

• 10-1/2" rotors (O.E. on 1979-81 GM Midsize: Malibu, Monte Carlo, Cutlass, Regal, etc.)
• 5 x 4-3/4" bolt pattern

GM Metric LH/RH Brake Calipers, 7/16-20 Inlet

• Stock replacement single piston Metric calipers
• Standard equipment on 1978-88 GMmid-size cars (Cutlass, Grand Prix, Regals, Monte Carlo, etc.)
• Feature a 2.375" single piston
• Shielded bottom inlet
• Will save 3-1/2 lbs. per side compared to mid-size 1969-1977 calipers
• No core charge required
• 7/16"-20 inlet
• 5-1/2" Mount Spacing
• Can be usedwith brake hoses from Pre-1978 GM intermediate cars
• UtilizesGM metric style D154brake pads

Speedway Soft Street Brake Pads, GM Metric 1978-Up D154

• Speedway soft brake pad for GM Metric 1978-Up Calipers
• One set outfits two calipers
• Tech Tip: Only use full metallic pads on coated rotors

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

Speedway Replacement Inner Seals

• 2.00" x 2.56" x .234"

Spindle Nut Kit for Speedway GM Spindles

• Includes a pair of castle nuts, washers and cotter pins
• Castle Nut: 3/4"-20 (not SAE, which is 16 TPI)
• Overall Height: 0.505"
• Height up to the bottom of the castellated notch: 0.276"
• Wrench size for nut: 1.00"

These dimensions are approximate. Certain brake kits may require removal of some of the nut material to allow for installation of the cotter pin.

55-57 Fullsize Chevy Brake Booster Conversion Kit, 1 In Bore, Zinc

• Easily convert your manual braking system and add some power on your 1955-1957 fullsize Chevy with little to no modifications!
• Comes complete with brake booster, master cylinder, and booster bracket
• Detailed instructions are also included for a seamless install
• 1955-1957 Fullsize Chevy 
• 8" Dual Power Brake Booster 
• 1" bore master cylinder 
• Zinc

Kit Includes:

• 8" Dual Power Brake Booster
• 1" Bore, Cast Iron Master Cylinder
• Disc Drum Proportioning Valve Kit
• Booster Brackets
• Clevis
• Pedal Rod Extension

Brake Master/Booster Installation Instructions

910-34921 Instructions (PDF)

910-31992 Instructions (PDF)

Brake Pad Brand Guide (Link) 

Brake System Builders Tip (Link)

GM Proportioning Valve Plumbing Instructions (PDF)