JEGS
Power Brake Booster Conversion Kit for 1964-1974 GM A/F/X-Body [Disc/Drum]
555-631019
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| Ratings |
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| Price |
| Brand |
GM Car, Disc Front & Drum Rear
JEGS 555-631019 Power Brake Booster Conversion Kit Features:
- Transform your manual brake system to a power-assisted unit
- Designed for front disc / rear drum brake systems
- Fits GM A, F, and X-body cars such as 1964-1972 Chevelle, Malibu, Monte Carlo, tempest, lemans, GTO, Grand Am, Grand Prix, cutlass, skylark, century, regal, 1967-1969 Camaro, firebird, and nova
- Includes: 8 “ dual diaphragm brake booster, 1-1/8 “ bore oval flat top chrome master cylinder, left mount proportioning valve kit, brake light warning switch, and mounting bracket
- Must have kit to improve brake performance
JEGS 555-631019 Power Brake Booster Conversion Kit Includes:
- (1) Brackets
- (1) Pedal Rod Extension
- (1) Clevis
- (2) Stainless Steel Lines
- (1) Proportioning Valve
- (1) Plastic Proportioning Valve Tool
Specifications:
Part Type
Product Line
Booster Mounting Bracket Included
Yes
Bowl Design
Dual
Brake Booster Diameter
8 in (203.2 mm)
Brake Booster Finish
Chrome
Brake Booster Included
Yes
Brake Booster Material
Steel
Brake Booster Type
Dual Vacuum diaphragm
Brake Pedal Rod Extension Included
Yes
Front Brake Type
Disc
Master Cylinder Bore Size
1.125 in (28.575 mm)
Master Cylinder Cap Included
Yes
Master Cylinder Finish
Chrome
Master Cylinder Included
Yes
Master Cylinder Material
Aluminum
Master Cylinder Stroke
1 in (25.4 mm)
Mounting Hardware Included
Yes
Mounting Hole Quantity
4 holes
Package Depth
10.90
Package Height
15.30
Package Width
13.10
Part Category
Replacement Parts
Part Fitment
Semi Universal
Quantity
Sold as an Assembly
Rear Brake Type
Drum
Reservoir Included
Yes
Reservoir Material
Aluminum
Shipping Weight
19.55
Vendor Part Number
GM-309
631019 is rated
out of
5 by
11.
Rated 5 out of
5
by
81 vortec chevelle from
70 Chevelle/ 496 8.1 Vortech
Looks beautiful on the car, I never received installation instructions. For the most part it was pretty straight forward, but the "angle" seems "steep" (not level)... Anyways, as long as it works, Ill be happy
Date published: 2024-01-08
Rated 5 out of
5
by
D S 5955 from
1967 Camaro
This setup was easy to install with very little modifications and it looks great.
Date published: 2021-10-06
Rated 5 out of
5
by
Poor Ole Davey from
Power Brake Booster & Master Cylinder Kit
This is a really beautiful kit. The fit and finish is superior. This is a great product and a great price too.
Date published: 2017-02-16
Rated 5 out of
5
by
Poor Ole Davey from
A Perfect Piece
The OE Power Brake Booster and Master Cylinder was an eyesore. The booster's paint was chipped and the master cylinder was badly rusted. The new pieces are beautifully plated and polished.
Date published: 2017-02-02
Rated 4 out of
5
by
bob29 from
will buy again
Looks good works good good product so far. Have not used it alot yet
Date published: 2017-02-13
Rated 2 out of
5
by
Salty Seabee from
Finally got through this total build (i.e. Stainless lines and full OEM front/rear parts).
1. Good price but some parts from 2 kits were needed to accomplish the project. Adjustments were made by the JEGS sales associate.
2. After bleeding 2x with a squishy pedal.... Asked some of my Salty Sea Bee Construction Mechanics to see what was missing... The internal push rod, between the master cylinder and the power booster needs more length (i.e. the peddle is to soft and can hardly stop the truck). Additional effort via a slew of You Tube Videos and original 71 C20 Tech pub and knowledge of a vernier calliper and depth helped me dial this in "better."
Unnecessary elements to what should have been factory specs.
2. The fluid chambers are smaller than OEM units and require a constant eye on bleeding the lines.
Date published: 2019-01-13
Rated 2 out of
5
by
Galaxie67 from
Looks very nice but........quality is poor
This MC / Booster combo looks beautiful but the seal / o-ring where the MC mates up to the booster is weeping brake fluid which means it is not getting a good seal. Last thing I need is my brakes going out down the road. I am annoyed that I have to now pay to have this uninstalled and pay out of my own pocket to have it returned. This is a quality control issue and should have been addressed as such my customer service when I called it in.
Date published: 2017-08-03
I have this same unit on my 71 Chevelle,with front and rear disc brakes,question is will this unit work with the rear disc breaks?
The Jegs 555-631019 is designed for Disc/Drum application. You would need to change the proportioning valve for Disc/Disc Applications.
Date published: 2024-09-04
Will this fit my 68 nova it’s got drum brakes
The Jegs 555-631019 booster kit will fit a '68 Nova with Disc/Drum brakes.
Date published: 2024-02-14
Im wanting to put this on my 70 Chevelle originally with disc F and drum R. I just installed disc to the rear. Will this work on my car?
The Jegs 555-631019 booster kit is valved for disc/drum vehicles.
Date published: 2024-04-15
71 Chevy C20 350 CU with Edlebrock performer manifold and 1406 carb. It had vacuum issues and I'm hoping this will help and still offer class IV towing capabilities for braking.
Yes, this should work in your Chevy truck as long as you still have disc brakes in the front and drum brakes in the rear.
Date published: 2018-11-01
I am assuming the electrical post on the proportioning valve is the brake light switch, right?
Yes, it is used in some applications.
Date published: 2018-07-09
Will this fit a 76 camaro
Yes, you can make this work on a 76 Camaro.
Date published: 2018-03-27
Will This Fit a1989 GMC SLE K1500 Truck,or do you have one that will
This is a universal application that will work with most applications.
Date published: 2018-09-17
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Some parts are not legal for use in California or other states with similar laws / regulations
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.