Product Summary

Front Position, 11 Inch Rotor Diameter, Natural

  • Increase the stopping performance on '55-'57/'59-64 Chevy full size cars (Bel-Air, Biscayne, Impala, 150 and 210 series) from drum to disc brakes
  • For use on stock drum brake spindles only
  • Features an 11" vented rotor with 5 on 4-3/4" wheel bolt pattern and 7/16" studs
  • Will work with 14" and larger wheels intended for disc brake applications
  • Includes standard '78-'88 GM Metric calipers with a 2-1/2" bore and 7-16"-20 inlet

Comes as a Kit

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Key Specs

MFG. Part #91031911
PositionFront
Wheel Bolt Pattern (in.)5x4.75 in.
Wheel Bolt Pattern (mm)5x120.65 mm
Rotor Diameter11 Inch
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Speedway Motors 91031911 Details

  • Complete “at the wheels” bolt on disc brake conversion kit
  • Works with your original drum brake spindles and steering arms
  • Uses GM-spec rotors and disc brake calipers for easy service parts needs
  • 11-inch plain face rotors feature GM 5x4.75 bolt pattern with 7/16-20 studs
  • Will fit original 14-inch disc brake wheels, though 15-inch wheels recommended
  • A significant increase in braking performance for today’s roads
  • Kit adds a total track width increase of 1-3/4-inches (7/8-inch per side)
  • Not for use with 2-inch drop spindles and not compatible with 1958 drum spindles

Increase Your Driving Safety with Bolt on Disc Brakes for Your Full Size Chevy Car

We’ve heard the story a thousand times. You’d really like to drive your full size Chevy a bit more, but today’s distracted drivers and increased traffic on today’s roads just puts too much stress on you as a driver trying to get your Impala, Biscayne, or Bel-Air stopped safely when traffic hits the brakes in front of you. We get it. We’ve driven plenty of manual drum brake cars in our time and on a busy street or highway it is the definition of a white knuckle ride. But don’t hang up those car keys! Upgrading your old drum brakes to a more effective and safer front disc brake system is one of the best safety upgrades you can make to your ’55-’64 Chevy car.

Everything You Need to Update Your Classic Chevy from Drum to Disc Brakes

Our 11-inch single piston caliper disc brake conversion kit is a vast improvement for your ’55-’64 full size Chevy car. Using a unique caliper adapter bracket along with standard GM 11-inch rotors and common ’78-’88 GM “Metric” brake calipers, this kit is 100 percent bolt on with zero modifications to your factory drum brake spindle. Note that this kit does not mount to the 1958 model year spindle due to specific differences this one year spindle has. Additionally, this kit does not work with aftermarket 2-inch drop spindles. We do offer a ’55-’57 Chevy disc brake kit that is compatible with our 2-inch drop spindles for use with GM Metric calipers if you’re looking for that extra low ride height up front with a ’57 Chevy disc brake conversion.

Our front disc brake conversion kit includes rotors, calipers, caliper brackets, bearings, seals, brake hoses, and all installation hardware. There is no need to cut/flare your existing brake lines or make any additional changes at the wheel other than using a 14-inch disc brake spec wheel or upgrading to a 15-inch or larger wheel for caliper clearance. Due to the brake rotors used in this kit track width is increased 7/8-inch per side (or 1-3/4-inch total). This is typically not a problem unless running wide aftermarket wheels that are already close to your fender edges.

A Significant Braking Upgrade for The Money

Our ’55-’64 full size Chevy front disc brake kit is easy on the wallet too! For not much more than the cost of a complete drum brake overhaul (new drums, shoes, hardware, wheel cylinders, bearings, seals, hoses, etc.) you can upgrade your Biscayne, Impala, Tri-Five, or other full size Chevy car to the power and safety of disc brakes. We can offer such a cost effective kit by utilizing proven components, such as ’69-’72 Chevy rotors and ’78-’88 GM Metric calipers as part of the kit. These items have been used on countless millions of Chevy cars and will get the job done without the need for custom “race car” bits like two-piece rotors and other special machined adapters/hardware. If you’re looking for something a bit “race inspired” we do offer this same disc brake upgrade with drilled and slotted rotors, providing that great look with open spoke wheels.

Using these 11-inch vented rotors and single piston GM Metric calipers with large 2-1/2-inch pistons provide a huge increase in stopping power over the original drum brakes on your Chevy. The industry standard brake pads (a great street compound that offers exceptional braking with low dust), bearings, seals, and hardware mean that any emergency replacement parts are as close as your corner parts store, getting you back on the road in no time without having to wait for custom parts to be shipped. Not to mention how much easier it is to service the typical disc brake system vs the much more involved and confusing drum brake setup with all it’s return springs, different brake lining sizes, and more to trip you up.

With any drum to disc brake conversion kit the properly sized master cylinder is important to effective braking operation and proper brake pedal feel. The factory ’55-’64 drum brake master cylinder is a single reservoir setup that will not be compatible with your new front disc brakes. Therefore, we highly recommend adding a power brake booster with dual bowl master cylinder to this kit. We have both a 7-inch booster with fixed proportioning valve kit and an 8-inch booster with adjustable proportioning valve kit, both with a 1-inch bore disc/drum “Corvette” master cylinder. Both options are a direct bolt on your firewall and require minimal brake line changes to plumb into your current brake system when converting drum brakes to disc.

Speedway Motors 91031911 Specifications

KEY SPECS
MFG. Part #91031911
BrandSpeedway Motors
PositionFront
Wheel Bolt Pattern (in.)5x4.75 in.
Wheel Bolt Pattern (mm)5x120.65 mm
Rotor Diameter11 Inch
Rotor TypeVented
Caliper PistonsOne
Caliper FinishNatural
Parking Brake ProvisionNo
Minimum Recommended Wheel Diameter15 Inch
Rotor ShapeRound
Hardware IncludedYes
Rotor StylePlain Face
Spindle TypeFactory Drum Spindle
Front Rotor IncludedYes
Front Rotor Diameter11 Inch
Front Caliper IncludedYes
Rear Caliper IncludedNo
Front Spindles IncludedNo
Master Cylinder IncludedNo
Brake Booster IncludedNo
Brake Hoses IncludedYes
Rear Rotor IncludedNo
Bolt Pattern5 on 4.75"
ColorNatural
Front Caliper FinishNatural
Front Caliper Piston Quantity1
GENERAL
Sold in QuantityKit
NotesFor '55-'64 Chevy full size cars. Will work with 14" and larger wheels intended for use with disc brakes. Will not fit 2" drop spindles. Kit adds 1-3/4" total track width (7/8" per side). Does not work on 1958 oem spindles.
Rotor Thickness1.05"
Stud Diameter0.44"
Stud Length0.8"
Front Suspension TypeIFS
Front Caliper MaterialCast Iron
Front Rotor StylePlain Face
Bearings IncludedYes
Brake Pads IncludedYes
Track Width Increase1.75"

Ratings & Reviews

4.9

68 Reviews

Overall Assessment

Customers praise the easy installation and high quality of the Speedway brake conversion kit. Many reviews report significant improvements in stopping power and braking performance after installing the kit on various models of cars, particularly Chevrolets from the 1950s & 60s. The kit is reported to fit well, with no modifications needed, and includes all necessary parts, making it straightforward & convenient. Users cited Speedway's prices as competitive, considering the comprehensive nature of the kits and the noticeable upgrade in safety. A few customers wished for more detailed instructions, but overall satisfaction with the product's functionality, quality, and value remains high.

4.9

68 reviews

5

60

4

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All around great kit with everything needed.

5.0

2 months ago

Ron

Leavenworth Ks

Verified

Great kit but the pads that came with it were trash. They would not seat or stop the car at all. Purchased new gm pads and stopped great. If purchasing this kit I would ask to either upgrade or delete the pads.

Would Recommend

Great Kit

5.0

5 months ago

ben

clio mi

Verified

Very straight forward kit. comes with everything needed. quality parts, i had one issue with leaky bleeder screws but the company sorted it out quickly. AWESOME KIT.

Would Recommend

Yes

5.0

7 months ago

Goodwrench

Carlinville, Ill

Verified

All parts fit and were good.

Would Recommend

Worked like it should

5.0

a year ago

Arky

Lansing Michigan

Verified

Simple follow instructions

Would Recommend

Yes I would.

5.0

a year ago

Wrench

Harper Kansas

Verified

Used on my 62 impala, was a great kit very easy to install. Great quality parts at a good price..

Would Recommend

1962 Corvair Rampside Truck works great!

5.0

a year ago

CorvairSS

SF Bay Area

Verified

I installed this kit on my 1962 Corvair Rampside Pickup. I drove 178 miles within an hour of installing the kit. My truck brakes never worked better. Easy install. It is the best priced kit on the market today.

Would Recommend

Great product easy install

5.0

a year ago

Cb

Mobile al

Verified

Bolts right up perfectly

Would Recommend

I would buy this parts again and again

5.0

a year ago

Yogi

Marietta ga

Verified

Fits perfect

Would Recommend

Yes, I would buy this product again.

5.0

2 years ago

Sal

Santa Barbara

Verified

Some of the hardware rubbed on turns, but my mechanic was able to shave down the screws.

Would Recommend

I would buy this again

5.0

2 years ago

Terry

Newport pa

Verified

Very fast service

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Questions & Answers

29 Questions • 14 Answers

Can I use this kit on my 64 Chevy 11

by Rmon

• 3 years ago

1 answer

I have this kit on my 62 Belair Wagon. It's time to replace the brake pads. Should I buy pads for a full size like a Caprice or a mid size like a Monte Carlo?

by LT

• 4 years ago

1 answer

Hello,I have a 64 impala SS 409 that has the larger front drum brakes will this disc brake kit work. Thanks

by Leon

• 6 years ago

1 answer

If I buy this kid and master cylinder kit for power brakes. Do these come with the hard lines from the master cylinder to rubber lines? If not do know where I could purchase those?

by ozzie

• 7 years ago

2 answers

What do I need to install 2" drop spindles with this brake system?

by 55 chevy

• 8 years ago

1 answer

How would I know if the 14" rims are disc brake compatible? I have a set of American racing from the late 80's I believe. Is there a way to measure from one of the wheel studs to the inside diameter of the wheels to determine correct fitment.

by Brian B.

• 8 years ago

1 answer

Is there a diagram on how the brake pad clips go on to the pad/rotor? Thank you in advance.

by Dave

• 8 years ago

1 answer

Can I buy just a set of rotors? I have a 1955 chevy and need new rotors. If so what is the part number and price. Thanks.

by Smitty

• 9 years ago

1 answer

Do the brake calipers come painted or do I need to paint them prior to installation

by Burger

• 9 years ago

3 answers

What bearings fit these kits, I like to have some spares on hand?

by Melvin

• 9 years ago

2 answers

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Fitment

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